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Motion vector

Subclass of:

375 - Pulse or digital communications

375240000 - BANDWIDTH REDUCTION OR EXPANSION

375240010 - Television or motion video signal

375240120 - Predictive

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
375240170 Half-pixel refinement 22
Entries
DocumentTitleDate
20130044817SYSTEM AND METHOD FOR VIDEO ENCODING USING CONSTRUCTED REFERENCE FRAME - Disclosed herein is a method for digital video encoding prediction comprising creating a constructed reference frame using an encoder and compressing a series of source video frames using the constructed reference frame to obtain a bitstream including a compressed digital video signal for a subsequent decoding process. The constructed reference frame is omitted from the series of digital video frames during the subsequent viewing process.02-21-2013
20130044816MOTION COMPENSATION APPARATUS, VIDEO CODING APPARATUS, VIDEO DECODING APPARATUS, MOTION COMPENSATION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A motion compensation apparatus performs motion compensation on a current block having a non-rectangular shape, using a reference image stored in a frame memory and includes: a reference block memory for storing part of the reference image; a frame-memory-transfer control unit which identifies, in the reference image, a pixel block having a rectangular shape and including a reference block having a non-rectangular shape and used for motion compensation, and transfers pixel data of the identified pixel block from the frame memory to the reference block memory; and a motion compensation processing unit which generates a prediction block of the current block, using the reference block included in the pixel block stored in the reference block memory.02-21-2013
20110002392METHOD AND APPARATUS FOR MULTI-VIEW VIDEO ENCODING AND METHOD AND APPARATUS FOR MULTIVIEW VIDEO DECODING - Methods and apparatuses for efficiently coding and decoding multi-view video are provided. A method of decoding multi-view video includes: interpreting from a received bitstream a block type indicating a method of determining a motion vector of a current block present in a current picture of the multi-view video; interpreting a first picture type indicating whether the current picture is a reference picture type for inter prediction; interpreting additional information of the current picture based on at least one of the interpreted first picture type and the interpreted block type; and reconstructing the current block and the current picture by using the additional information.01-06-2011
20090060042SYSTEM AND METHOD FOR MOTION VECTOR COLLECTION BASED ON K-MEANS CLUSTERING FOR MOTION COMPENSATED INTERPOLATION OF DIGITAL VIDEO - A system and method of collection motion vectors for motion compensated interpolation of digital video are disclosed. For example, one embodiment includes a method of identifying motion vectors for interpolating a portion of a digital video signal. The method comprises identifying a plurality of motion vectors indicative of differences between first and second frames of a digital video signal, assigning each of the plurality of motion vectors to one of a plurality of clusters, selecting at least one motion vector assigned to each of the plurality of clusters, and generating at least a portion of a third frame based on the at least one motion vector selected for each of the plurality of clusters. Other embodiments include a system and device configured to perform the method.03-05-2009
20090213933TEXTURE SENSITIVE TEMPORAL FILTER BASED ON MOTION ESTIMATION - Architecture that employs texture sensitive temporal filtering to reuse motion estimation information in a realtime encoder. The temporal filter is applied for classified static areas. The architecture reuses the motion estimation results on motion vectors, cost estimates (e.g., sum of absolute difference (SAD)), and edge awareness texture information to apply the temporal filter on the current picture. Filtering can be applied at the pixel level, block level or macroblock level.08-27-2009
20130028324METHOD AND DEVICE FOR DECODING A SCALABLE VIDEO SIGNAL UTILIZING AN INTER-LAYER PREDICTION - A method and device for decoding a scalable video signal utilizing an inter-layer prediction are provided herein. An inter-layer pre-fetch scheme (IPS) is presented to improve the performance for scalable video coding (SVC) decoder. With proposed invention, the required information for inter-layer prediction in SVC technique will be pre-fetched ahead when reconstructing the enhancement layer so that the cache miss rate can be reduced significantly. Accordingly, the execution time and memory energy consumptions can be improved.01-31-2013
20130028327FILTER POSITIONING AND SELECTION - The present invention relates to a method for encoding and decoding an image signal and to corresponding apparatuses therefor. In particular, during the encoding and/or decoding of an image signal filtering with at least two filters is performed. The sequence of the filter application and possibly the filters are selected and the filtering is applied in the selected filtering order and with the selected filters. The determination of the sequence of applying the filters may be performed either separately in the same way at the encoder and at the decoder, or, it may be determined at the encoder and signaled to the decoder.01-31-2013
20130028328IMAGE ENCODING METHOD AND IMAGE DECODING METHOD - According to one embodiment, an image encoding method includes selecting a motion reference block from an already-encoded pixel block. The method includes selecting an available block including different motion information from the motion reference block, and selecting a selection block from the available block. The method includes generating a predicted image of the encoding target block using motion information of the selection block. The method includes encoding a prediction error between the predicted image and an original image. The method includes encoding selection information identifying the selection block by referring to a code table decided according to a number of the available block.01-31-2013
20130028326MOVING IMAGE ENCODING DEVICE AND MOVING IMAGE DECODING DEVICE - An encoding controlling unit 01-31-2013
20130028325Method and device for error concealment in motion estimation of video data - An encoder extracts motion vectors from a frame I(t−1) preceding the frame I(t) being encoded, to create a motion complexity map and creating an irregular grid of cells, the sizes of the cells based on the complexity of motion in the frame at a respective position. This gives a motion vector field made up of an irregular grid of differently-sized cells, each cell having associated with it a motion vector. The motion vectors are transmitted to the decoder as auxiliary information along with the usual motion prediction information. The decoder receives the motion prediction information, with a slice missing, and the auxiliary information. The decoder rebuilds the irregular grid for frame I(t) based on the frame I(t−1) similarly, and fills the cells with the motion vectors from the auxiliary information, thus recreating an estimated motion vector field for the current frame I(t) for subsequent error concealment/decoding/displaying.01-31-2013
20090097560System for and method of transcoding video sequences from a first format to a second format - The present invention discloses systems for and methods of transcoding first video data in a first format, such as AVC, into second video data in a second format, such as MPEG-2. A method in accordance with the present invention disables deblocking filters, bypasses macroblock encoding for certain picture types, such as B-pictures, and re-uses motion vectors. In one embodiment, motion vectors for the second video data are set substantially equal to motion vectors for the first video data, when the two differ by less than a threshold value. In other embodiments, only macroblocks that contain all zero-valued blocks bypass the transcoding process, thereby simplifying the transcoding process further. Other embodiments further simplify the transcoding process by requiring that B-pictures are not used as reference pictures, reference pictures in the second video data are restricted to be the same as reference pictures in the first video data, and bi-predictions are not allowed.04-16-2009
20090074073CODING OF MOTION VECTOR INFORMATION - Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.03-19-2009
20110182362METHOD AND APPARATUS FOR MOTION VECTOR ENCODING/DECODING USING A PLURALITY OF MOTION VECTOR ESTIMATIONS, AND METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING USING SAME - The present disclosure relates to a method and an apparatus for motion vector encoding/decoding through estimations of multiple motion vectors, and to a method and an apparatus for video encoding/decoding using the same. The disclosure provides a motion vector encoding apparatus including a motion vector estimator for estimating a plurality of motion vectors with estimating one of the plurality of motion vectors as a motion vector of a current block and estimating the remaining motion vectors by one or more predefined estimation criteria in agreement with a video decoding apparatus; and a motion information encoder for encoding motion information generated by using the plurality of motion vectors. According to the disclosure, estimations are enabled by using more accurate motion vectors while reducing the bit rate for encoding the motion vectors leading to an improvement of the compressing efficiency.07-28-2011
20120163468METHOD OF AND APPARATUS FOR ESTIMATING MOTION VECTOR BASED ON SIZES OF NEIGHBORING PARTITIONS, ENCODER, DECODING, AND DECODING METHOD - Provided are a method of and apparatus for estimating a motion vector using the sizes of neighboring partitions, an encoder, a decoder, and a decoding method. The method includes comparing the size of a first neighboring partition located to the left of the current block with the size of a second neighboring partition located above the current block and, if the size of the first neighboring partition and the size of the second neighboring partition are different from each other, estimating a motion vector of the larger one of the first neighboring partition and the second neighboring partition as the motion vector of the current block.06-28-2012
20090196353VIDEO COMPRESSION METHOD AND APPARATUS - A video compression system may have first and second dual-port memory devices, a third memory device, and first and second processors that may provide enhanced processing, including motion estimation. The first processor may be configured to store in the second memory device first and second video frames and to transfer sequential sets of data from the first video frame corresponding to fields of search. A second set of a plurality of adjacent macroblocks of the second video frame may be compared to macroblocks selected from the field of search. Dual-port memory devices may allow for the concurrent use of shared memory by the two processors as well as data transfer during processing.08-06-2009
20080260033Hybrid hierarchical motion estimation for video streams - A method for estimating image-to-image motion of a pixel block in a stream of images which includes a current image which includes the pixel block and a reference image, the method including performing a hierarchical search in a search area of the reference image, including producing a decimated reference image and a decimated pixel block, searching for a location in the search area of the decimated reference image which best fits the decimated pixel block, repeating the producing and the searching for more than one level of hierarchy, determining a first candidate location in the reference image which corresponds to the best fitting location, determining a second candidate location in the reference image by a method other than the hierarchical search, performing a search in the reference image for refined locations of the first and the second candidate locations, selecting one final location from the refined candidate locations, and using the final location for estimating the motion. Related apparatus and methods are also described.10-23-2008
20080260032METHOD AND APPARATUS FOR CAPTION DETECTION - Machine-readable media, methods, apparatus and system for caption detection are described. In some embodiments, a plurality of text boxes may be detected from a plurality of frames. A first percentage of the plurality of text boxes whose locations on the plurality of frames fall into a location range may be obtained. A second percentage of the plurality of text boxes whose sizes fall into a size range may be obtained. Then, it may be determined if the first percentage and the location range are acceptable and if the second percentage and the size range are acceptable.10-23-2008
20110299598MOTION VECTOR DISPLAY CIRCUIT AND MOTION VECTOR DISPLAY METHOD - A motion vector display circuit includes a motion vector detection circuit that detects a motion vector between frame images, and a norm calculation circuit that calculates the length of a motion vector detected by the motion vector detection circuit. The length of the detected motion vector is converted into a luminance component of a display signal, a first component of the motion vector is converted into a first chrominance component of the display signal, a second component of the motion vector is converted into a second chrominance component of the display signal, and the motion vector is displayed using the display signal.12-08-2011
20090316785JOINT SYSTEM FOR FRAME RATE CONVERSION AND VIDEO COMPRESSION - A video processing apparatus includes a storage interface, where information and hardware of a motion estimation module and a motion compensation module are shared between frame rate conversion and video coding operations. The video processing apparatus therefore may perform both the frame rate conversion and video coding operations at the same time or perform them by turns, while requiring fewer resources and a smaller chip area than conventional methods.12-24-2009
20110194611METHOD AND SYSTEM FOR VIDEO ENCODING USING A VARIABLE NUMBER OF B FRAMES - An effective method for dynamically selecting the number of I, P and B frames during video coding is proposed. Short-term look-ahead analysis of a video sequence yields a variable number of B frames to be coded between any two stored pictures. The first picture of a group of frames (GOF) may be coded as a B picture. Motion speed is calculated for each picture of the GOF with respect to the first picture of the GOF. Subject to exceptions, as long as the subsequent pictures exhibit motion speeds that are similar and motion vector displacements that are co-linear with those of the first picture in the GOF, they may be coded as B pictures. When a picture is encountered having a motion speed that is not the same as that of the first picture in the GOF, the picture may be coded as a P picture. In some embodiments, a sequence of B pictures that terminates in a P picture may be called a “group of frames” (GOF).08-11-2011
20110194610Motion-Vector Estimation - A method of generating a motion vector with sub-pixel resolution associated with a first portion of a first image frame in a sequence of image frames for encoding the sequence of image frames is disclosed. An error surface represents a difference between image data of the first portion of the first image frame and image data of a second portion of a second image frame, displaced with a displacement vector in relation to the first portion, and is a function of the displacement vector. The motion vector is an estimate of a displacement vector that minimizes the value of the error surface. The method includes obtaining a coarse motion vector, which is an estimate of the motion vector with integer-pixel resolution, approximating the error surface in a neighborhood of the coarse motion vector with a biquartic polynomial, and representing terms of the biquartic polynomial with orthogonal polynomials. Moreover, the method includes generating the motion vector by searching for a displacement vector that minimizes the biquartic polynomial. A corresponding electronic apparatus, a corresponding computer program product, and a corresponding computer-readable medium are also disclosed.08-11-2011
20110194609Selecting Predicted Motion Vector Candidates - There is provided a method of selecting PMV candidates, wherein each PMV candidate corresponds to a motion vector used for coding of a previous block, said previous block having a distance from a current block. The method comprises identifying allowed distance values of distances between the current block and the previous block. The method further comprises selecting a set of PMV candidates as a subset of the set of previously coded motion vectors that were used for previous blocks having an allowed distance from the current block.08-11-2011
20110194608Managing Predicted Motion Vector Candidates - There is provided a method of managing PMV candidates. The method comprises selecting a set of PMV candidates as a subset of the previously coded motion vectors. The method further comprises assigning a code value to each PMV candidate in the set of PMV candidates. The code values vary in length and are assigned to the PMV candidates in order of expected usage such that the PMV candidate having the highest expected usage has one of the shortest code values.08-11-2011
20110194607Information Processing Device, Information Processing Method, and Program - An information processing device includes a bit conversion unit that performs reduction in a bit number allocated to a pixel for a criterion image and a reference image and generates a criterion image and a reference image which are hierarchized according to a bit number allocated to a pixel, and a motion vector detection unit that performs coarse detection of a motion vector by block matching using the criterion image and the reference image of which a bit number is reduced, decides a search range for fine detection of a motion vector based on the motion vector detected by the coarse detection, and performs fine detection of a motion vector using an image in the search range which belongs to a hierarchy equal to or more than an image used in the coarse detection in a bit number allocated to a pixel.08-11-2011
20090122867Coding Background Blocks in Video Coding that Includes Coding as Skipped - A method, an apparatus, and a method to encode a block in a picture of a time sequence of pictures such as video. The method includes selecting the mode for coding the block, one of the modes being to code the block as skipped. The method further includes limiting the number of consecutive times a particular block is coded as skipped without re-setting the quantization level to a relatively fine level of quantization and re-selecting the mode.05-14-2009
20120177126MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, MOVING PICTURE ENCODING METHOD, MOVING PICTURE DECODING METHOD, MOVING PICTURE ENCODING PROGRAM, AND MOVING PICTURE DECODING PROGRAM - A moving picture encoding apparatus for dividing a frame image as a coding target in a moving picture signal into plural target regions, detecting motion vectors for the respective target regions, and thereby performing coding based on motion compensation. The moving picture encoding apparatus comprises motion vector prediction means for performing a correction of scaling the motion vector of an adjacent region adjacent to the target region on the basis of the target reference frame image. The motion vector predicting means also performing a determination of an optimum predicted motion vector based on the motion vector of the adjacent region adjacent to the target region and thereby predicting the optimum predicted motion vector after the correction.07-12-2012
20120177125MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - A moving picture coding apparatus includes: an inter prediction control unit which determines to code a motion vector using, among a plurality of candidate predicted motion vectors, a candidate predicted motion vector having the least error with relative to a motion vector derived by motion estimation; a picture type determination unit which generates picture type information; a temporal direction vector calculation unit which derives a candidate predicted motion vector in temporal direct; and a co-located reference direction determination unit which generates, for each picture, a co-located reference direction flag.07-12-2012
20120177123METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR COMPUTING A MOTION VECTOR - A prediction unit is identified within a picture of a video sequence. The prediction unit is bordered by neighboring prediction units within the picture. A match for the prediction unit is located within a first reference picture. At least a subset of the neighboring prediction units is scanned to identify a motion vector predictor (“MVP”) candidate. The MVP candidate of a first type is identified if available, wherein a match for the MVP candidate of the first type is located within the first reference picture. In response to the MVP candidate of the first type being unavailable, the MVP candidate of a second type is identified, wherein a match for the MVP candidate of the second type is located within a second reference picture. An encoder calculates a difference between a motion vector of the MVP candidate and a motion vector of the prediction unit, and encodes the difference and an index to identify the MVP candidate. A decoder decodes the difference, and calculates the motion vector of the prediction unit by adding the difference to the motion vector of the MVP candidate.07-12-2012
20120177122METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR DETERMINING A MOTION VECTOR - A prediction unit is identified within a picture of a video sequence. The prediction unit is bordered by neighboring prediction units within the picture. The neighboring prediction units include first and second neighboring prediction units that are separated from one another by at least a third neighboring prediction unit. A subset of the neighboring prediction units is scanned to identify an MVP candidate. The subset includes at least the first and second neighboring prediction units and excludes at least the third neighboring prediction unit. An encoder calculates a difference between a motion vector of the MVP candidate and a motion vector of the prediction unit, and encodes the difference and an index to identify the MVP candidate. A decoder decodes the difference, and calculates the motion vector of the prediction unit by adding the difference to the motion vector of the MVP candidate.07-12-2012
20120177121ADVANCE VIDEO CODING WITH PERCEPTUAL QUALITY SCALABILITY FOR REGIONS OF INTEREST - A video compression framework based on parametric object and background compression is proposed. At the encoder, an object is detected and frames are segmented into regions corresponding to the foreground object and the background. The encoder generates object motion and appearance parameters. The motion or warping parameters may include at least two parameters for object translation; two parameters for object scaling in two primary axes and one object orientation parameter indicating a rotation of the object. Particle filtering may be employed to generate the object motion parameters. The proposed methodology is the formalization of the concept and usability for perceptual quality scalability layer for Region(s) of Interest. A coded video sequence format is proposed which aims at “network friendly” video representation supporting appearance and generalized motion of object(s).07-12-2012
20120177119FASTER MOTION ESTIMATION IN AN AVC SOFTWARE ENCODER USING GENERAL PURPOSE GRAPHIC PROCESS UNITS (GPGPU) - Systems and methods consistent with the invention relate to performing faster motion estimation through efficient use of the General Purpose Graphic Processing Unit (GPGPU) as the compute co-processor in a multi-processor architecture. Integer pel motion estimation and fractional pel motion estimation algorithms for large block sizes may be performed on the GPU, while motion estimation for smaller block sizes is performed on the central processing unit (CPU). In embodiments described herein, GPU-based integer pel motion estimation and fractional pel motion estimation algorithms are performed using kernels which are designed so that multiple thread blocks can run concurrently on a multiprocessor.07-12-2012
20130044815METHOD AND APPARATUS FOR ENCODING AND DECODING MOTION VECTOR - Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding a motion vector includes: selecting a mode from among a first mode in which information indicating a motion vector predictor of at least one motion vector predictor is encoded and a second mode in which information indicating generation of a motion vector predictor based on pixels included in a previously encoded area adjacent to a current block is encoded; determining a motion vector predictor of the current block according to the selected mode and encoding information about the motion vector predictor of the current block; and encoding a difference vector between a motion vector of the current block and the motion vector predictor of the current block.02-21-2013
20100118962VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-13-2010
20100118960IMAGE DECODING APPARATUS, IMAGE DECODING METHOD, AND IMAGE DATA CONVERTING APPARATUS - An image decoding apparatus includes a syntax-element compressing unit that executes compression processing on syntax elements extracted in syntax analysis processing and classifies the syntax elements based on types thereof, a plurality of syntax-element expanding units that correspond to any one of classified groups of syntax elements in a one to one relation and expand the syntax elements belonging to the corresponding group to restore the original syntax elements, and a plurality of signal processing units that correspond to any one of the syntax-element expanding units in a one to one relation and apply, to the syntax elements restored by the corresponding syntax-element expanding unit, signal processing corresponding to a type thereof.05-13-2010
20100118959METHOD AND APPARATUS FOR FAST GEOMETRIC MODE DESICION IN A VIDEO ENCODER - There are provided methods and apparatus for fast geometric mode decision in a video encoder. An apparatus includes an encoder (05-13-2010
20100118958Method and apparatus for performing video coding and decoding with use of virtual reference data - A video codec is provided in which virtual reference data (e.g., virtual reference blocks) are advantageously employed by a video coder and decoder to significantly improve coding efficiency as compared to prior art codecs. Specifically, a “virtual reference,” as used herein, is defined as a group of pixels (e.g., a block) that is used as reference material for encoding portions of the video signal (e.g., a motion-compensated inter-predicted block), but that does not comprise or represent any portion of the actual video sequence to be displayed. For example, it may advantageously be determined that portions of the video sequence may be efficiently represented as a motion-compensated block of pixel values which are generated by the video coder based on the blocks being predicted but not based on any actual blocks in any of the actual video frames or slices.05-13-2010
20100118969MOTION VECTOR CODING METHOD AND MOTION VECTOR DECODING METHOD - A motion vector coding unit 05-13-2010
20090135911FAST MOTION ESTIMATION IN SCALABLE VIDEO CODING - Scalable Video Coding is recently attracting attentions due to its high flexibility. The current H.264/AVC scalable extension has adopted the Motion Compensated Temporal Filter (MCTF) framework to provide temporal scalability. In this paper, described is another fast motion estimation (ME) algorithm based on the MCTF framework. Simulation results show that the herein described algorithm can reduce the encoding complexity significantly while maintaining similar bit rate and PSNR, comparing with existing fast ME algorithms implemented in the reference software.05-28-2009
20100158126Integrated Transcoding - Methods and systems for integrated transcoding on a plurality of data channels to convert one or more data channels from an incoming encoding format to an outgoing encoding format are disclosed.06-24-2010
20100158125METHOD AND APPARATUS FOR CONSTRUCTING AND DECODING VIDEO FRAME IN VIDEO SIGNAL PROCESSING APPARATUS USING MULTI-CORE PROCESSING - A method is provided for constructing a video frame in a video signal processing apparatus using multi-core processing, in which multiple macro blocks are generated from a video signal on a predetermined unit basis, and a video frame is constructed by combining the generated multiple macro blocks with header information. The video frame includes one correlation information field for recording information about correlations between the multiple macro blocks, and the one correlation information field is located in front of the multiple macro blocks constituting the video frame.06-24-2010
20090116557TEMPORAL MOTION VECTOR FILTERING - Methods and apparatus, including computer program products, implementing and using techniques for performing temporal motion vector filtering in digital video are disclosed. A recursive hierarchical process is used to determine a motion vector. In the recursive hierarchical process, a neighborhood of old motion vectors is filtered to generate a first estimated motion vector for an image patch in a pair of two image frames. The filtering process uses multiple vectors in a neighborhood around the old motion vector to improve the prediction of the first estimated motion vector. The temporal vector partitioning process separates motion vectors associated with an object from motion vectors associated with a background before selecting a best motion vector, which improves the selection process. The process also works well in the absence of object/background boundaries, as in this case the outlier (incorrect) vector or vectors will be separated out from the good vectors.05-07-2009
20100074338VIDEO ENCODING METHOD AND APPARATUS, AND VIDEO DECODING APPARATUS - To allow a finer quantization control according to the property of an image within a macroblock, quantization parameter values are allowed to be changed in units of sub-blocks equal to or smaller than the macroblock in a similar manner as in motion compensation and orthogonal transform processes. A finer-tuned quantization control is performed, for example, by selecting fine and coarse quantization parameters respectively for corresponding sub-blocks if a plurality of images having different properties coexist within the macroblock.03-25-2010
20100074337Macro-Block Video Stream Encoding - A video stream encoding apparatus and method therefore is herein described. The video stream encoding apparatus includes a divider for dividing a frame in a video stream into a plurality of processing units, each processing unit including a plurality of macro-blocks; and an encoder for encoding the plurality of macro-blocks in each processing unit in parallel. The same quantization parameters are used for respective macro-blocks in the same processing unit in the quantization of the encoder. By the apparatus and the method of the invention, dependencies between macro-blocks are broken, and the precision of high rate controlling is kept while encoding the respective macro-blocks in parallel.03-25-2010
20100074336Fractional motion estimation engine - Fractional motion estimation may be implemented by tagging sub-blocks of a first size. The sub-blocks may be located within blocks of picture data of a variety of different sizes, including the first size. The sub-blocks are tagged to link them to their motion vectors so that more efficient calculations may be implemented in some embodiments.03-25-2010
20090168884Method and Apparatus For Reusing Available Motion Information as a Motion Estimation Predictor For Video Encoding - There are provided a method and apparatus for reusing available motion information as a motion estimation predictor for video encoding. The apparatus includes an encoder for encoding an image block by determining a motion estimation predictor for the image block using motion information previously generated from an element other than the encoder, and using the motion estimation predictor in a motion estimation process to generate a motion vector for the image block. The motion estimation predictor is used in place of at least one predictor otherwise used in the motion estimation process. The at least one predictor is any of a search window predictor, a temporal predictor, and a block type predictor.07-02-2009
20130077692REGION SIZING FOR MACROBLOCKS - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation.03-28-2013
20130077693INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation.03-28-2013
20130077691PARALLELIZATION FRIENDLY MERGE CANDIDATES FOR VIDEO CODING - This disclosure presents methods and systems for coding video in merge mode of a motion vector prediction process. A method of coding video data may determining a merge candidate set for a current prediction unit of a current coding unit, wherein the merge candidate set is determined without comparing motion information of a merge candidate in the merge candidate set to motion information of any other prediction units, and performing a merge motion vector prediction process for the current prediction unit using the merge candidate set. The method may further comprise excluding merge candidates from the merge candidate set that are within another prediction unit of the current coding unit.03-28-2013
20130077690Firmware-Based Multi-Threaded Video Decoding - Embodiments of the present disclosure provide electronic devices and methods for equipping a multi-threaded processor with firmware instructions to configure threads to perform dedicated functions to expedite decoding of video data. In a particular embodiment, an electronic device includes a multi-threaded processor and a memory. The memory includes firmware including instructions executable by the multi-threaded processor, without use of a dedicated hardware macroblock decoding module, to decode video data compliant with a VP03-28-2013
20130034160APPARATUS AND METHOD FOR VIDEO PROCESSING - Methods and apparatus for facilitating motion estimation in video processing are provided. Preferably, coordinates of a search area within a video frame are determined for each of a plurality of macroblocks (MBs) of a reference frame based upon a predicted location derived from the coordinates of the MB within the reference frame and motion estimation information. The video frame can be segmented into tiles and associated overlapping tile defined for at least some tiles. Search data is defined for each tile as pel data for each pixel within that tile and any associated tile. Macroblock searches are preferably conducted on a tile assignment basis with tile search assignments distributed among a plurality of processing elements. Each processing element preferably has a local memory it uses for the search data when performing a tile search assignment.02-07-2013
20130039427Method and Apparatus for Periodic Structure Handling for Motion Compensation - A motion compensated picture rate converter for determining a dominant motion vector for a block appearing in two images includes a high-pass filter and a low-pass filter, transform calculators responsive to the filters for performing transforms on at least two images to produce a frequency-domain representation of the images, estimating calculators for estimating a plurality of motion vectors based on the frequency-domain representations, and a periodic structure detection and elimination module responsive to the transform calculators and the estimating calculators for identifying a period based on the frequency-domain representation of the images and for selecting a dominant motion vector based on the estimated motion vectors and the identified period. A method of operation is also disclosed.02-14-2013
20130039428HYBRID VIDEO DECODER, HYBRID VIDEO ENCODER, DATA STREAM - A hybrid video decoder has an extractor, a predictor and a reconstructor. The extractor is configured to extract motion information and residual information for a first block of a current picture from a data stream. The predictor is configured to provide, depending on the motion information, a prediction for the block of the current picture by interpolating a reference picture, using a combination of an IIR filter and FIR filter. The reconstructor is configured to reconstruct the current picture at the block using the prediction for the block and the residual information for the block. Furthermore, a hybrid video encoder, a data stream, a method for encoding a video and a method for decoding a video are described.02-14-2013
20130039426VIDEO DECODER AND A VIDEO ENCODER USING MOTION-COMPENSATED PREDICTION - A video decoder using motion-compensated prediction has a predictor configured to predict a first subset of parameters of a plurality of motion parameters, defining the motion-compensated prediction of a predetermined region of a picture of a video, to obtain a prediction for the first subset. The video decoder further has a reconstructor configured to reconstruct the first subset of parameters from the prediction of the first subset and residual information for the first subset contained in a data stream, to obtain a reconstruction of the first subset. The predictor is further configured to predict a second subset of parameters of the plurality of motion parameters, being disjoint from the first subset, using the reconstruction of the first subset.02-14-2013
20130039425METHOD FOR PROCESSING A MOTION INFORMATION ITEM, ENCODING AND DECODING METHODS, CORRESPONDING DEVICES, SIGNAL AND COMPUTER PROGRAM - A method and apparatus are provided for processing movement information relating to a regular image of a sequence of images. The method includes: a step of building a list including at least one expected piece of movement information and at least one unexpected piece of movement information; a first step of associating expected movement information with movement information according to a first rule for optimizing the cost of encoding the movement information to be encoded; a second step of associating each unexpected piece of movement information not associated during the first association step with movement information to be encoded, identified among the pieces of movement information of the list, according to a second rule which aims to ensure that each piece of movement information is associated with a single piece of movement information to be encoded.02-14-2013
20130039424Method and device for error concealment in motion estimation of video data - An encoder extracts motion vectors from a frame I(t−1) preceding the frame I(t) being encoded and processes them to create an estimated motion vector field I(t) for the frame being encoded. A minimised difference between the motion vector field of the frame being encoded and the estimated motion vector field is used to generate transform parameters, which are transmitted to the decoder as auxiliary information along with the usual motion prediction information. The decoder receives the transform parameters. The decoder also creates an estimated motion vector field I(t) for based on a preceding frame I(t−1) and applies the transform parameters to the estimated motion vector field to obtain missing motion vectors. The motion vector field rebuilt using the reconstructed missing motion vectors is used for subsequent error concealment/decoding/displaying.02-14-2013
20100034277VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034270INTENSITY COMPENSATION TECHNIQUES IN VIDEO PROCESSING - Techniques for intensity compensation in video processing are provided. In one configuration, a wireless communication device compliant with the VC1-SMPTE standard (e.g., cellular phone, etc.) comprises a processor that is configured to execute instructions operative to reconstruct reference frames from a received video bitstream. A non-intensity-compensated copy of a reference frame of the bitstream is stored in a memory of the device and used for defining the displayable images and for on-the-fly generation of a stream of intensity-compensated pixels to perform motion compensation calculations for frames of the video bitstream.02-11-2010
20100046625APPARATUS AND METHOD FOR VIDEO ENCODING AND DECODING - A method and apparatus for encoding an image based on a video sensor structure are provided. The method includes acquiring an image to be encoded; separating the acquired image into respective color components; creating a predicted image for each of the color components, and creating a residual image between the predicted image and the acquired image; and performing transform encoding on each of the color components individually by applying the residual image to a transformation formula.02-25-2010
20100046623METHOD AND SYSTEM FOR MOTION-COMPENSATED FRAME-RATE UP-CONVERSION FOR BOTH COMPRESSED AND DECOMPRESSED VIDEO BITSTREAMS - A video receiver is operable to receive video bitstreams from a video transmitter over, for example, a wireless high definition transmission link. The received video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information such as, for example, block motion vectors, block coding modes, quantization levels, and/or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed video from a video feed from, for example, an IP TV network. When an uncompressed video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed video using extracted block motion vectors and associated confidence-consistence measure. When a compressed video is received, the video receiver is configured to perform video decompression on the received compressed video prior to the frame-rate up-conversion.02-25-2010
20130034167VIDEO CODING AND DECODING METHODS AND APPARATUSES - A coding method includes: partitioning an image block to be decoded irregularly according to an irregular partitioning mode and a position parameter to obtain at least two different sub-blocks; comparing the sub-blocks with a reference sub-block to obtain a residual of a pixel value of the image block to be coded; obtaining a reference position parameter according to a surrounding block of the image block to be coded, and subtracting the reference position parameter from the position parameter of the image block to be coded to obtain a position parameter difference of the image block to be coded; quantizing the residual, and performing entropy coding on a result of the quantization, the motion vector information, and the position parameter difference; and writing the entropy coding result and partitioning mode information of the image block into a code stream.02-07-2013
20130034166IMAGE ENCODING METHOD AND IMAGE DECODING METHOD - According to one embodiment, an image encoding method includes selecting a motion reference block from an encoded pixel block to which an inter prediction is applied. The method includes selecting one or more available blocks from the motion reference block. The method includes selecting a selection block from the available blocks. The method includes generating a predicted image of the encoding target block using motion information of the selection block. The method includes encoding a prediction error between the predicted image and an original image. The method includes encoding selection information specifying the selection block by referring to a code table decided according to a number of the available blocks.02-07-2013
20130034165IMAGE CODING METHOD AND IMAGE DECODING METHOD - An image coding method for coding an input image per block to generate a coded image signal includes: predicting for each prediction unit which is an area obtained by partitioning a target block to generate a prediction image of the target block; comparing a transform unit which is an area obtained by partitioning the target block and is a processing unit for frequency transform with the prediction unit, to detect part of a boundary of the prediction unit, the boundary being located within the transform unit; performing boundary filtering on the detected part of the boundary in the generated prediction image; calculating a difference between a filtered prediction image and the input image to generate a difference image of the target block; and performing frequency transform on the difference image for each transform unit.02-07-2013
20130034164MOTION COMPENSATION METHOD, IMAGE DECODING METHOD, IMAGE CODING METHOD, MOTION COMPENSATION APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - A motion compensation method includes: specifying, using a motion vector of a current block, a reference image area for use in motion compensation for each of the current block and a current sub-block spatially adjacent to the current block, to read out reference pixel data of the specified area from a frame memory; performing motion compensation using the reference pixel data read out in the readout, to generate prediction pixel data for each of the current block and the current sub-block; outputting the prediction pixel data for the current block, generated in the performing of motion compensation; and temporarily storing the prediction pixel data for the current sub-block, generated in the performing of motion compensation.02-07-2013
20130034162IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The present invention relates to an image processing apparatus and an image processing method that can suppress increase of a processing amount and enhance a coding efficiency when prediction motion vector information is generated.02-07-2013
20130034163METHODS AND DEVICES FOR ENCODING AND DECODING AN IMAGE SEQUENCE IMPLEMENTING A PREDICTION BY FORWARD MOTION COMPENSATION, CORRESPONDING STREAM AND COMPUTER PROGRAM - A method and apparatus for encoding a sequence of images by predicting at least one current image by forward motion compensation from at least one reference image. Prediction implements, for at least one current block of the current image: forward projection of a block of the reference image on the current image, delivering a projected block at least partially overlapping the current block; partitioning the current block delivering a sub-block at least partially overlapped by at least one projected block; and at least one iteration of the following steps for at least one overlapped sub-block: checking that the overlapped sub-block complies with a predetermined allotting criterion; with a positive check, allotting, to the overlapped sub-block, one of the projected motion vectors; and with a negative check, and so long as a predetermined minimum size is not reached for the overlapped sub-block: partitioning of the overlapped sub-block.02-07-2013
20090190662METHOD AND APPARATUS FOR ENCODING AND DECODING MULTIVIEW VIDEO - A method for encoding a multiview video includes estimating and compensating for a motion between a plurality of pictures from more than one view. A first video captured at a first view becomes a basis and for performing encoding on the first video using the motion estimation and compensation result. Motion estimation and compensation is then performed on a predetermined picture selected from among a plurality of pictures included in a second video captured at a second view being different from that of the first video. The picture from the second view is then encoded using the motion estimation and compensation result. A bit stream is generated including encoded data of the first video and encoded data of the second video.07-30-2009
20090190663MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE DECODING DEVICE - When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.07-30-2009
20130034161MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding method for calculating a motion vector predictor to be used when coding a motion vector of a current block, and coding the current block includes: (S02-07-2013
20100098164VIDEO SIGNAL PROCESSING METHOD AND APPARATUS THEREOF - A method of processing an interleaved video including a plurality of fields includes receiving a top field and a bottom field successively; selecting one of the top field and the bottom field as a selected field; and generating an interpolated field for replacing an unselected field of the top field and the bottom field, wherein a field motion between the selected field and the interpolated field is less than a field motion between the top field and the bottom field.04-22-2010
20100111190VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-06-2010
20100111189VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-06-2010
20100111188Moving Picture Encoding Apparatus - Data of both MPEG-2 and MPEG-4 is generated simultaneously with a small circuit scale and a small power consumption. A moving picture encoding apparatus for encoding a moving picture through motion-compensated inter-frame prediction has: a MPEG-2 encoding unit including a motion vector estimator, a frame memory, a forward prediction circuit, a bidirectional prediction circuit, a prediction selection circuit, an intra-frame encoding circuit and a local decoding circuit; a MPEG-4 encoding unit including a frame extraction circuit for extracting a predetermined MPEG-2 frame and a transcoder for encoding the extracted frame; a motion vector calculator calculating a motion vector to be used for MPEG-4 prediction from a motion vector to be used for MPEG-2 prediction; and a prediction mode controller controlling the prediction mode of the MPEG-2 encoding unit in such that the MPEG-2 prediction mode becomes coincident with the MPEG-4 prediction mode.05-06-2010
20100111187VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-06-2010
20100111186VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-06-2010
20100111185Motion vector detection apparatus, motion vector processing method and program - A motion vector detection apparatus includes: a base luminance value production section configured to produce a base luminance value of the base block; an effectiveness calculation section configured to calculate an effectiveness degree of each of the pixels of the base block based on luminance values of the pixels of the base block and the base luminance value; a correlation calculation section configured to calculate a correlation degree of the reference block with the base block for each of the reference blocks; a position acquisition section configured to acquire the position of that one of the reference blocks set in the reference frame which exhibits the highest correlation degree with the base block; and a motion vector calculation section configured to calculate a motion vector based on the position of the reference block acquired by the position acquisition section and the position of the base block.05-06-2010
20130136185REFERENCE PICTURE PREDICTION FOR VIDEO CODING - A video coder includes a forward coder and a reconstruction module determining a motion compensated predicted picture from one or more previously decoded pictures in a multi-picture store. The reconstruction module includes a reference picture predictor that uses only previously decoded pictures to determine one or more predicted reference pictures. The predicted reference picture(s) are used for motion compensated prediction. The reference picture predictor may include optical flow analysis that uses a current decoded picture and that may use one or more previously decoded pictures together with affine motion analysis and image warping to determine at least a portion of at least one of the reference pictures.05-30-2013
20100111183METHOD AND AN APPARATUS FOR DECORDING/ENCORDING A VIDEO SIGNAL - A method of decoding a video signal is disclosed. The present invention includes searching a reference block using side information, deriving motion information of a current block from the reference block, decoding the current block using the motion information of the current block, wherein the side information includes offset information indicating a position difference between the reference block and a corresponding block and wherein the corresponding block is a block indicated by a global motion vector indicating a disparity difference between a view of the current block and a view of the reference block.05-06-2010
20100111181VIDEO PROCESSING APPARATUS AND METHODS - A video processing apparatus includes a video decoder and a post-processing device. The video decoder is provided for decoding a block-based compressed bitstream to generate a sequence of frames, wherein data of reference frames in the sequence of frames are provided for generating a current frame. The post-processing device couples to a first memory and the video decoder. The video decoder sequentially stores the sequence of frames on a block-by-block basis and in a decoding order into the first memory. The post-processing device acquires the sequence of frames block by block, extracts motion information, and performs post-processing according to the sequence of frames and the motion information.05-06-2010
20100111182DIGITAL VIDEO CODING WITH INTERPOLATION FILTERS AND OFFSETS - This disclosure describes techniques for encoding digital video data using interpolation filters and offsets. An encoder may be configured to select interpolation filters for sub-pixel precision motion estimation based on historical interpolation results obtained for previously encoded video units, such as frames or slices. The encoder also may be configured to compute and assign offsets to the sub-pixel positions after interpolation based on differences between a reference unit and the unit to be coded. The computation and assignment of offsets may be performed before motion estimation. Motion estimation may be refined so that the motion search considers sub-pixel positions to which offsets have been previously added and evaluates sub-pixel positions that have a non-zero offset. In some cases, interpolation filter selection, offset computation, and/or refined motion estimation for a given unit may be performed in a single encoding pass.05-06-2010
20090310683Video coding device and video coding method - A video coding device includes an image-dividing number setting unit and a coding unit in the aims of suppressing an occurrence of a load cache miss when decoding a coded data without increasing a capacity of a cache memory even when a resolution of a video is high. The image-dividing number setting unit sets a dividing number of image. The coding unit divides a coding object image constituting the video into partial images with the same number as the dividing number of image, and performs a coding processing using a motion compensation on each of the partial images.12-17-2009
20130136183APPARATUS FOR DECODING MOTION INFORMATION IN MERGE MODE - Disclosed is an apparatus for decoding motion information in merge mode for reconstructing a moving picture signal coded at a low data rate while maintaining a high quality of an image. The apparatus for decoding motion information in merge mode discloses the position of a merge mode candidate and the configuration of a candidate in order to predict motion information in merge mode efficiently. Furthermore, a merge candidate indicated by the merge index of a current block can be efficiently reconstructed irrespective of a network environment by adaptively generating a merge candidate based on the number of valid merge candidate.05-30-2013
20100104019METHOD AND APPARATUS FOR PROCESSING AN IMAGE - A method and apparatus for processing an image. The method and apparatus may each perform the operations of extracting motion information of an input signal calculating true motion information, which indicates whether an object of interest moves and an area where the object of interest moved, from the motion information, and deinterlacing the input signal by using the motion information with respect to an area that is determined to have true motion, such that the input signal is in a form before being compressed for transmission. The method and apparatus may further perform an operation of converting resolution of the deinterlaced input signal. In the converting of the resolution, the resolution may be converted by using the true motion information and the motion information.04-29-2010
20100104018SYSTEM, METHOD AND COMPUTER-ACCESSIBLE MEDIUM FOR PROVIDING BODY SIGNATURE RECOGNITION - Provided and described herein are, e.g., exemplary embodiments of systems, methods, procedures, devices, computer-accessible media, computing arrangements and processing arrangements in accordance with the present disclosure related to body signature recognition and acoustic speaker verification utilizing body language features. For example, certain exemplary embodiments can include a computer-accessible medium containing executable instructions thereon. When one or more computing arrangements executes the instructions, the computing arrangement(s) can be configured to perform certain exemplary procedures, including (i) receiving first information relating to one or more visual features from a video, (ii) determining second information relating to motion vectors as a function of the first information, and (iii) computing a statistical representation of a plurality of frames of the video based on the second information. Further, the computing arrangement(s) can be configured to provide the statistical representation to a display device and/or recording the statistical representation on a computer-accessible medium, for example.04-29-2010
20100104015Method and apparatus for transrating compressed digital video - Apparatus and methods for transcoding one or more compressed video bitstreams. In one embodiment, the method comprises partially decoding an input video bitstream to produce a partially decoded intermediate video bitstream generated without performing a deblocking operation, extracting syntax pass-through information from the input video bitstream, and producing an output video bitstream from the intermediate video bitstream by using, for each macroblock, the macroblock decision from the input video bitstream.04-29-2010
20100104020APPARATUS CAPABLE OF PERFORMING BOTH BLOCK-MATCHING MOTION COMPENSATION AND GLOBAL MOTION COMPENSATION AND METHOD THEREOF - An interpolation unit receives an incoming video bit stream comprising a plurality of frames including first macroblocks encoded using block-matching motion compensation and second macroblocks encoded using global motion compensation. A translation unit converts global motion parameters included in a current frame of the incoming video bit stream into a global motion vector. The interpolation unit performs luminance and chrominance interpolation operations on each macroblock contained in each frame of the incoming video bit stream. When processing a current macroblock, if the current macroblock is encoded using global motion compensation, the interpolation unit performs the luminance interpolation operations according to the global motion vector at half-pel resolution, and performs the chrominance interpolation operations at quarter-pel resolution. If the current macroblock is encoded using block-matching motion compensation, the interpolation unit performs the luminance and chrominance interpolation operations according to the macroblock motion vector contained in the current macroblock at half-pel resolution.04-29-2010
20100104017Encoding of a Plurality of Information Signals Using a Joint Computing Power - A device for encoding a plurality of information signals using a joint computing power includes a plurality of encoders for encoding a respectively different one of the information signals using the joint computing power, wherein each encoder is controllable via at least one respective encoding parameter with regard to its encoding complexity/encoding distortion performance. A provider for providing, for each of the encoders, signal-dependent information dependent on the respective information signal and indicating an encoding distortion of the respective encoder, and a setter for setting the encoding parameters depending on the signal-dependent information considering the joint computing power such that a combination of encoding complexities of the encoders does not exceed a value dependent on the joint computing power are also provided, wherein the setter for setting and the plurality of encoders cooperates such that, with regard to subsequent time intervals, a distribution of the joint computing power depends on the encoding parameters or an encoding complexity of the individual encoders.04-29-2010
20100104016WEIGHTED PREDICTION INFORMATION CALCULATION METHOD, APPARATUS, AND PROGRAM, AND VIDEO CODING METHOD, APPARATUS, AND PROGRAM - A weighting factor calculation unit (04-29-2010
20090154566MEMORY CELL CIRCUIT, MEMORY DEVICE, MOTION VECTOR DETECTOR, AND MOTION COMPENSATION PREDICTIVE ENCODER - The invention relates to a memory device and the like. The memory device comprises one or more memory block. The memory block has a memory cell array consists of multiple memory cells (06-18-2009
20090154565Video data compression method, medium, and system - A video data compression method, medium, and system. The video data compression method, medium, and system includes receiving image data, generating background model data of the image data, determining a moving object region based on the image data and the background model data, estimating a motion value of the moving object region, and compressing the image data by referring to at least one of the background model data and the estimated motion value.06-18-2009
20090154564MOTION ESTIMATION APPARATUS AND METHOD FOR MOVING PICTURE CODING - Provided is a motion estimation apparatus for moving picture coding. The apparatus includes a 1-pel buffer for storing 1-pel unit pixels using luminance signals of a reference frame which correspond to macroblocks of a current frame, a 1-pel estimator for calculating 1-pel unit motion vectors and minimum costs in correspondence to the macroblocks of the current frame and the pixels stored in the 1-pel buffer, a ½-pel interpolator for performing ½-pel unit interpolation using the pixels stored in the 1-pel buffer, a ½-pel buffer for storing the ½-pel unit interpolated pixels, a ½-pel estimator for calculating ½-pel unit motion vectors and minimum costs in correspondence to the pixels stored in the ½-pel buffer, the values calculated by the 1-pel estimator, and the macroblocks of the current frame, a ¼-pel interpolator for performing ¼-pel unit interpolation using the pixels stored in the ½-pel and 1-pel buffers, a ¼-pel buffer for storing the ¼-pel unit interpolated pixels, and a ¼-pel estimator for calculating ¼-pel unit motion vectors and minimum costs in correspondence to the pixels stored in the ¼-pel buffer, the values calculated by the ½-pel estimator, and the macroblocks of the current frame.06-18-2009
20090154563VIDEO CODEC WITH SHARED INTRA-PREDICTION MODULE AND METHOD FOR USE THEREWITH - A video processing device operates in an encoding mode where the processing device encodes an input signal and in a decoding mode where the video processing device decodes the input signal. The video processing device includes an intra-prediction module that generates a best intra prediction mode for each macroblock of the plurality of macroblocks. The intra-prediction module performs an encoding function when the video processing device is in the encoding mode and performs a decoding function when the video processing device is in the decoding mode.06-18-2009
20100040148VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.02-18-2010
20100040147VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-18-2010
20100027673VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027669VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20120213283METHOD OF DECODING A SEQUENCE OF ENCODED DIGITAL IMAGES - The disclosure provides a method of decoding a sequence of encoded digital frames encoded by an encoder using a format applying block-based prediction. For the decoding of an encoded digital frame which comprises a missing area, the method includes obtaining additional data associated with at least one block of the encoded digital frame. Using the obtained additional data, for at least one block of the missing area, information identifying one type of predictor in a predetermined list of types of predictor is obtained. A reconstruction method for the at least one block of the missing area is selected using the information identifying one type of predictor.08-23-2012
20120213281METHOD AND APPARATUS FOR ENCODING AND DECODING MULTI VIEW VIDEO - A method and apparatus for encoding and decoding video for brightness value compensation of multi-view video by using an offset value, which is a difference between an average value of pixels of the current block and an average value of pixels of the reference block, to the prediction block to compensate for an illumination value of the prediction block08-23-2012
20100080298Refined Weighting Function and Momentum-Directed Genetic search pattern algorithm - A weighting function (WF) is previously provided to model the number of search points of a pattern search. However, WF fails to properly describe the behavior of the genetic pattern search algorithms due to some over-simplifications in their models. Therefore, a refined weighting function (RWF) is provided to more accurately describe both genetic and non-genetic pattern searches. Moreover, based on the understanding to RWF, two momentum-directed genetic search algorithms are further provided. These new algorithms check the possible mutations according to their likelihood to the preceding successful mutations and further accelerate the previous genetic pattern searches.04-01-2010
20120183072MOVING PICTURE DECODING APPARATUS - Provided is a moving picture decoding apparatus including: a picture memory (07-19-2012
20120183071VIDEO DECODER WITH ADAPTIVE OUTPUTS - In one aspect, there is provided a video decoder including a first write port to write uncompressed video data to a first buffer in a first format adapted based on an input required by the video decoder and to suppress writing to the first buffer. The video decoder also includes a second write port to write uncompressed video data to a second buffer in a second format adapted to provide the uncompressed video data for subsequent processing external to the video decoder.07-19-2012
20120183070METHOD OF CODING AND DECODING IMAGES, CORRESPONDING DEVICE FOR CODING AND DECODING AND COMPUTER PROGRAM - A method and apparatus are provided for coding a signal from images, the images being split into sub-blocks of pixels. The method includes grouping at least two sub-blocks into at least one block of larger size, when the sub-blocks comply with at least one predetermined grouping criterion. A prediction is performed by applying at least one mode of motion prediction using at least two distinct motion prediction vectors, for at least one block of larger size, the motion prediction vectors being associated respectively with sub-sets of the block of larger size, comprising at least one of the sub-blocks of the block of larger size. The sub-sets are predefined and distinct.07-19-2012
20120183069Frame Prediction System and Prediction Method Thereof - The present invention discloses a frame prediction system and a prediction method thereof. An initializing module initializes a first image block having a plurality of pixels. A providing module provides a first centroid and a first motion vector of a second image block. The location lookup module finds a location according to the first centroid, and generates a first weight and a second weight respectively according to a relationship between each of the pixels, the first centroid and the location. A vector lookup module finds a second motion vector, which gives a minimum pixel intensity error for the plurality of pixels in the first image block according to the first centroid, the first motion vector, the location, the first weight and the second weight. A processing module sequentially calculates a plurality of predictive intensity values according to the motion vectors and the weights.07-19-2012
20130083854Computer Method and Apparatus for Processing Image Data - A data compression method and apparatus that includes detecting a portion of a signal comprising a sequence of video frames that uses a disproportionate amount of bandwidth compared to other portions of the signal. The detected portion of the signal result in determined components of interest. Relative to certain variance, these components of interest are normalized to generate an intermediate form, which represents the components of interest reduced in complexity by the certain variance and enables a compressed form of the signal that maintains saliency. The detecting includes any of: 04-04-2013
20130083853MOTION VECTOR PREDICTOR CANDIDATE CLIPPING REMOVAL FOR VIDEO CODING - This disclosure describes techniques for coding a video block based on an unclipped version of a motion vector predictor candidate. The techniques include determining a motion vector predictor candidate list including motion vector predictor candidates from neighboring video blocks without clipping the motion vector predictor candidates. More specifically, if one of the motion vector predictor candidates points to a prediction block located outside of a reference picture boundary relative to the current video block, the techniques allow an unclipped version of the motion vector predictor candidate to be included in the candidate list. The current video block is then coded based on a determined unclipped motion vector predictor candidate of the candidate list. Elimination of the motion vector predictor candidate clipping process reduces complexity at both the video encoder and the video decoder.04-04-2013
20130083852Two-dimensional motion compensation filter operation and processing - Two-dimensional motion compensation filter operation and processing. A video bitstream or signal corresponding thereto undergoes motion compensation operations simultaneously or in parallel with respect to at least two respective dimensions (e.g., at least horizontal and vertical) in accordance with generating coefficient values employed for generating a decoded and/or output video signal. The simultaneous and in parallel operations made with respect to more than one dimension associated with the video bitstream or signal may employ a two-dimensional discrete cosine transform (2-D DCT) implemented to operate on more than one dimension simultaneously. Same or different respective fractional-pel distances may be employed with respect to multiple respective dimensions (e.g., common/same fractional-pel distance for all of the multiple respective dimensions, or different respective fractional-pel distances with respect to each of the multiple respective dimensions [such as a first fractional-pel distance for a first dimension, a second fractional-pel distance for a second dimension, etc.]).04-04-2013
20100091865VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100142621SCRAMBLING, DESCRAMBLING AND SECURED DISTRIBUTION OF AUDIO-VISUAL SEQUENCES FROM VIDEO CODERS BASED ON WAVELETS PROCESSING - A process for secured distribution of video sequences according to a digital stream format stemming from an encoding based on a processing by wavelets including frames including blocks containing coefficients of wavelets describing the visual elements, including analyzing the stream prior to transmission to client equipment to generate a modified main stream by deletion and replacement of selected information coding the original stream and having the format of the original stream, and complementary information of any format comprising the digital information coding the original stream and suitable for permitting reconstruction of the modified frames; and transmitting the modified main stream and the complementary information separately from a server to addressed equipment.06-10-2010
20100329348Method and Apparatus for Accomplishing Multiple Description Coding for Video - A method and apparatus for utilizing temporal prediction and motion compensated prediction to accomplish multiple description video coding is disclosed. An encoder receives a sequence of video frames and divides each frame into non-overlapping macromacroblocks. Each macromacroblock is then encoded using either an intraframe mode (I-mode) or a prediction mode (P-mode) technique. Both the I-mode and the P-mode encoding techniques produce an output for each of n channels used to transmit the encoded video data to a decoder.12-30-2010
20100329344SCALABLE VIDEO ENCODING METHOD AND DECODING METHOD, APPARATUSES THEREFOR, PROGRAMS THEREFOR, AND STORAGE MEDIA WHICH STORE THE PROGRAMS - A scalable video encoding method of performing encoding by predicting an upper-layer signal having a relatively high spatial resolution by means of interpolation using an immediately-lower-layer signal having a relatively low spatial resolution. The method computes a first weighting coefficient for each image area of a predetermined unit size in a search for estimating a motion between an encoding target image area in an upper layer and a reference image area, where the first weighting coefficient is computed based on a brightness variation between an image area, which belongs to an immediately-lower layer and has the same spatial position as the encoding target image area, and the reference image area; and performs a motion estimation using a signal which is obtained by correcting a decoded signal of the reference image area by the first weighting coefficient and functions as an estimated signal in the motion estimation, so as to compute a motion vector. Then the method computes a second weighting coefficient based on a brightness variation between a reference image area indicated by the motion vector and the image area which belongs to the immediately-lower layer and has the same spatial position as the encoding target image area; and determines a signal, which is obtained by correcting a decoded signal of the reference image area by using the second weighting coefficient, to be a compensated signal in motion compensation, which functions as a predicted signal of the encoding target image area.12-30-2010
20100329341METHOD AND APPARATUS FOR CODING MODE SELECTION - Method and apparatus for providing a fast and accurate video coding process are disclosed. After checking the coding history of certain coded video frame units of a video, the order of the inter prediction and the intra prediction is adaptively exchanged for each coding video frame unit of an inter frame. Furthermore, the computations for coding modes in the latter part of the computation order are selectively skipped so as to speed up the coding process without degrading the video quality.12-30-2010
20100020879METHOD FOR DECODING A BLOCK OF A VIDEO IMAGE - The method is it comprises the following steps: 01-28-2010
20130089149IMAGE DECODING APPARATUS, IMAGE DECODING METHOD, INTEGRATED CIRCUIT, AND PROGRAM - An image decoding device is provided that decodes, without an increase in the circuit size, a coded video sequence including a large-size block. The image decoding apparatus includes: a block division unit which divides a current block that is to be decoded and is included in a picture of the coded video sequence, into sub-blocks; an image obtainment unit which obtains, for each of the sub-blocks, image data corresponding to the sub-block from a recording medium; a prediction unit which generates, for each of the sub-blocks, a predicted image of the sub-block, based on the image data obtained by the image obtainment unit; and a reconstruction unit which reconstructs each of the sub-blocks, by adding the predicted image generated for the sub-block to the sub-block.04-11-2013
20130089148DETERMINATION OF A FIELD REFERENCING PATTERN - Several methods and a system to perform determination of a field referencing pattern are disclosed. In one aspect, a method is disclosed. A motion vector of a previously coded frame is analyzed using a processor and a memory. A statistic is updated based on whether the motion vector includes one or more of a fractional pel vertical component, a half pel vertical component, and an integer pel vertical component. A field referencing pattern of a target field is determined based on the statistic and an exception protocol.04-11-2013
20130114721PREDICTED MOTION VECTORS - A video encoder includes an entropy encoder that computes a predicted motion vector (PMV) for each of a plurality of macroblocks in a video frame based on motion vectors of multiple other macroblocks. The video encoder also includes a motion estimator that determines a predicted motion vector for a given macroblock by reusing, as the predicted motion vector for the given macroblock, only the PMV computed by the entropy encoder for a macroblock immediately on top of the given macroblock.05-09-2013
20120106648IMAGE PROCESSING DEVICE AND VIDEO REPRODUCING DEVICE - An image processing device and a video reproducing device capable of detecting the position of a character in a moving image even if pixels of the character have a luminance not higher than a luminance of pixels other than the pixels of the character are provided. A motion vector generation unit generates motion vectors of an image of a first frame and an image of a second frame. An edge detection unit detects an edge pixel forming an edge of the image of the first frame. A character position detection unit detects a position of a character included in the image of the first frame based on a motion vector, a luminance, and information about whether or not being the edge pixel, of each pixel of the image of the first frame.05-03-2012
20130051472Quality Scalable Video Data Stream - An apparatus for generating a quality-scalable video data stream includes a coder for coding a video signal using block-wise transformation to obtain transform blocks of transformation coefficient values for a picture of the video signal, a predetermined scan order with possible scan positions being defined among the transformation coefficient values within the transform blocks so that in each transform block, for each possible scan position, at least one of the transformation coefficient values within the respective transform block belongs to the respective possible scan position; and a generator for forming, for each of a plurality of quality layers, a video sub-data stream containing scan range information indicating a sub-set of the possible scan positions, and transform coefficient information on transformation coefficient values belonging to the sub-set of possible scan positions such that the sub-set of each quality layer includes at least one possible scan position not included by the sub-set of any other of the plurality of quality layers.02-28-2013
20090016437INFORMATION PROCESSING APPARATUS - During re-encoding, the picture type before frame-by-frame decoding and the picture type during re-encoding are matched thus enhancing an image quality during the re-encoding operation. Further, by making variable the data volumes that need to be matched between picture information before decoding and picture information during re-encoding, it is possible to realize re-encoding of optimal processing volumes (volumes of picture information that need to be matched in units of frame) for a variety of systems. Further, during re-encoding, the bit volume information used in decoding is used by the encoding unit. The encoding unit uses this bit volume information by combining the bit volume information with the bit allocation target value or I, P, B picture used during re-encoding and performing arithmetic operations on the bit volume information-based bit allocation target value.01-15-2009
20090262829VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262826VIDEO ENCODING / DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090323811Method for deriving motion for high resolution pictures from motion data of low resolution pictures and coding and decoding devices implementing said method - The invention relates to a method for deriving motion data for a macroblock divided in elementary blocks of a high resolution picture, called high layer macroblock, from motion data of macroblocks of a low resolution picture, called base layer macroblock. The method comprises the following steps: 12-31-2009
20090316788Video coding method with non-compressed mode and device implementing the method - The present invention relates to a video coding method comprising a mechanism enabling the activation or deactivation of the compression of video stream macroblocks to be coded according to the efficiency of compression and operating in at least two modes, the first coding mode being normal and the second mode being non-compressed, wherein said method comprises: in normal coding mode, the macroblock being processed is compressed by a coding loop then by an entropic coder, said compression being considered efficient if the size occupied by the macroblock after compression is notably less than the size that the macroblock occupies without compression, in the case where the compression of the macroblock being processed is not efficient, the non-compressed mode is activated, said non-compressed mode being characterized by the fact that the samples corresponding to the macroblock being processed reconstructed by the local decoder of the coding loop are transmitted without compression at the output of the coder.12-24-2009
20090304084COMBINED MOTION VECTOR AND REFERENCE INDEX PREDICTION FOR VIDEO CODING - A system and method for improving the coding efficiency of motion vector information in video coding. According to various embodiments, a list of motion vector predictor candidates is arranged according to predefined rules. Each motion vector also has a reference index associated with it. One of the motion vector candidates is then selected as a predictor based on predefined rules, or the selection is explicitly signaled in the bitstream. The reference index associated with the selected motion vector is used as a reference index for the current block. The reference index is predicted along with the motion vector. Such embodiments can improve the compression efficiency of modern video codecs.12-10-2009
20090304083Method for obtaining image reference block in a code of mode of fixed reference frame number - The present invention discloses a “rounding to zero” method which can maintain the exact motion vector and can also be achieved by the method without division so as to improve the precision of calculating the motion vector, embody the motion of the object in video more factually, and obtain the more accurate motion vector prediction. Combining with the forward prediction coding and the backward prediction coding, the present invention realizes a new prediction coding mode, which can guarantee the high efficiency of coding in direct mode as well as is convenient for hardware realization, and gains the same effect as the conventional B frame coding.12-10-2009
20120219065PROCESSING OF IMAGE - The present invention relates to an image processor that is configured to compare a single frame included in the received signal with a preceding processed frame so as to detect changes. In order to enable the image being compressed in as compact a format as possible, the processor is configured to detect changes by dividing the pixels of a single frame into movement blocks and to detect the movement block as changed if in said movement block there is a given number of pixels whose colour value change as compared with the corresponding pixels of the preceding processed frame exceeds a predetermined threshold, to exchange the colour values of the pixels of the unchanged movement blocks in the frame under process for predetermined values and to generate a signal that indicates the changes.08-30-2012
20120219064HIERARCHY OF MOTION PREDICTION VIDEO BLOCKS - A video decoder is configured to obtain an index value for a current video block. The video decoder obtains a partition type for a current video block. The video decoder selects one of a plurality of defined sets of ordered candidate predictive video blocks based on the partition type of the current video block. A video decoder selects a predictive video block from a selected one of the plurality of defined sets of ordered candidate predictive video blocks based on an index value. A video decoder generates a motion vector for a current video block based on motion information of the predictive video block.08-30-2012
20120219063METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING ADAPTIVE MOTION VECTOR RESOLUTION - The present disclosure relates to a method and apparatus for improving the encoding efficiency by adaptively changing the resolution of the motion vector in the inter prediction encoding and inter prediction decoding of a video. The apparatus includes: a block identification unit for identifying a colocated block included in a reference picture as a block located at a position equal to a position of a current block; a moving block determiner for determining if the current block is a moving block, based on a motion vector of the colocated block; a motion vector determiner for determining a motion vector of the current block according to a result of the determining of if the current block is a moving block; and a resolution converter for converting a resolution of the motion vector of the colocated block.08-30-2012
20120219062SYSTEM AND METHOD FOR MANAGING VIDEO PROCESSING IN A NETWORK ENVIRONMENT - A method is provided in one example embodiment and includes establishing a communication channel between a first network element and a second network element; identifying a video processing characteristic for a data stream in a network environment; embedding a plurality of bits into the data stream in order to identify the video processing characteristic that has been identified by the first network element; and communicating the data stream with the plurality of bits to a next destination.08-30-2012
20090041126Electronic apparatus, motion vector detecting method, and program therefor - An electronic apparatus includes an extracting unit, a retrieving unit, a detecting unit, and a controlling unit. The extracting unit extracts a first block at a first position of a first frame image from plural frame images constituting video data. The retrieving unit retrieves, from a retrieval region within a second frame image from among the plural frame images, a second block between which the first block has a smallest residual value, the second and first frame images having a first time length therebetween. The detecting unit detects a first motion vector between the first and second blocks. The controlling unit controls the detecting unit so that detection of the first motion vector is regulated when the second block is retrieved at a third position apart from the second position of the second frame image corresponding to the first position by a first threshold or more.02-12-2009
20090092189MOVEMENT PREDICTION METHOD AND MOVEMENT PREDICTION APPARATUS - Disclosed herein is a movement-prediction/compensation method for carrying out processing based on search layers to search for a movement vector by selecting one or more reference frame images for each of movement-compensated blocks obtained as a result of dividing a processed frame image existing among successive frame images. The method includes: a layer creation step; a first movement-prediction/compensation step; a reference frame image determination step; and a second movement-prediction/compensation step.04-09-2009
20090092188METHOD AND APPARATUS FOR INTER PREDICTION ENCODING/DECODING AN IMAGE USING SUB-PIXEL MOTION ESTIMATION - A method of inter prediction encoding of an image, the method including: searching for a first reference block in a reference picture by using a current block, and estimating a first motion vector in a first pel unit in regards to the first reference block; estimating a second motion vector by using pixels included in a pre-encoded area adjacent to the current block, and pixels adjacent to the first reference block, and determining a second reference block based on the second motion vector; and encoding the current block based on the first motion vector and the second reference block.04-09-2009
20130070856IMAGE PROCESSING APPARATUS AND METHOD - This disclosure relates to image processing apparatuses and methods for reducing the load of motion vector information coding and decoding operations that use the correlation in the temporal direction.03-21-2013
20130070855HYBRID MOTION VECTOR CODING MODES FOR VIDEO CODING - In one example, a device for coding video data includes a video coder (such as a video decoder or a video encoder) configured to code motion information for a current block of video data using a hybrid motion information coding mode, wherein to code the motion information, the video coder is configured to code a merge index syntax element of the motion information in a manner substantially conforming to a merge mode, and code at least one additional syntax element of the motion information in a manner substantially conforming to an advanced motion vector prediction (AMVP) mode, and wherein the video coder is configured to code the current block using the motion information. The hybrid mode may comprise a partial merge mode or a partial AMVP mode.03-21-2013
20130070857IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE AND METHOD THEREOF, AND PROGRAM - A first decoding processing unit 03-21-2013
20130070854MOTION VECTOR DETERMINATION FOR VIDEO CODING - For each prediction unit (PU) belonging to a coding unit (CU), a video coder generates a candidate list. The video coder generates the candidate list such that each candidate in the candidate list that is generated based on motion information of at least one other PU is generated without using motion information of any of the PUs belonging to the CU. After generating the candidate list for a PU, the video coder generates a predictive video block for the PU based on one or more reference blocks indicated by motion information of the PU. The motion information of the PU is determinable based on motion information indicated by a selected candidate in the candidate list for the PU.03-21-2013
20130070852METHOD FOR ASSISTING VIDEO COMPRESSION BY USING TOUCH SCREEN AND MONITORING SYSTEM - A method for assisting video compression by using a touch screen and a monitoring system are provided. The monitoring system comprises a touch screen and at least one image capturing apparatus. Each image capturing apparatus captures a reference frame. A touch operation performed on the touch screen is detected and a motion vector thereof is computed. The image capturing apparatus is moved according to the motion vector to capture a current frame. The reference frame is divided into reference blocks, and a current block in the current frame corresponding to each reference block is searched according to the motion vector. A difference between each reference block and corresponding current block is compared to determine whether to use the motion vector of the touch operation as the motion vector between the reference block and the current block, so as to compress frame data of the reference block and the current block.03-21-2013
20130070853Image Searching Module and Searching Method Thereof - An image searching module and a searching method thereof are applicable to motion estimation of a dynamic image-processing system. The image searching module comprises a storage module, a setting module, and a processing module. The storage module stores a first frame, and the first frame has a first block and a first pixel. The setting module sets a plurality of first estimation blocks with a first estimation pixel and a first interval as a side length in a second frame. The setting module sets an initiation point on the position corresponding to the first pixel in the second frame, and arranges these first estimation blocks in order along a predetermined direction. The processing module matches each first estimation block and the first block to work out respectively a first predicted strength value of each first estimation block corresponding to the first block.03-21-2013
20110206126DISPLAY DEVICE AND IMAGE PROCESSING METHOD THEREOF - A display device and driving method are disclosed. The display device is configured to determine local areas in which motion blur is expected. Black data is inserted into the image data in the areas to compensate and reduce the motion blur.08-25-2011
20110058612MOTION-VECTOR COMPUTATION APPARATUS, MOTION-VECTOR COMPUTATION METHOD AND MOTION-VECTOR COMPUTATION PROGRAM - A motion-vector computation apparatus includes: a motion-vector correction section configured to correct a referenced motion vector to be used in a process to compute a motion vector of a second macro block pair so as to make the referenced motion vector compatible with a specific structure; a motion-vector holding section configured to store the referenced motion vector corrected to a motion vector compatible with the specific structure at an address determined in accordance with the structure of a first macro block pair; and a motion-vector computation section configured to read out the referenced motion vector from the motion-vector holding section in accordance with the structure of the second macro block pair and compute a motion vector of the second macro block pair on the basis of the referenced motion vector read out from the motion-vector holding section.03-10-2011
20110058610Methods and Systems for Motion Estimation with Nonlinear Motion-Field Smoothing - Aspects of the present invention are related to low complexity systems and methods for nonlinear diffusion filtering of a motion-vector field. Local weights in the nonlinear diffusion filter may be data-adaptive, and, according to one aspect of the present invention, may be determined such that spatial coherency may not be enforced at object boundaries although the object boundaries have not been explicitly detected. Thus, the methods and systems of the present invention may smooth a motion-vector field without smoothing the motion-vector field across an object boundary. According to a second aspect of the present invention, motion vectors with a low confidence value may be suppressed, while motion vectors with a high confidence value may be propagated. According to another aspect of the present invention, motion estimation methods and systems may incorporate the methods and systems of the nonlinear diffusion filtering according to the present invention.03-10-2011
20110058609SYSTEM AND METHOD FOR OBJECT BASED PARAMETRIC VIDEO CODING - A video compression framework based on parametric object and background compression is proposed. At the encoder, an embodiment detects objects and segments frames into regions corresponding to the foreground object and the background. The object and the background are individually encoded using separate parametric coding techniques. While the object is encoded using the projection of coefficients to the orthonormal basis of the learnt subspace (used for appearance based object tracking), the background is characterized using an auto-regressive (AR) process model. An advantage of the proposed schemes is that the decoder structure allows for simultaneous reconstruction of object and background, thus making it amenable to the new multi-thread/multi-processor architectures.03-10-2011
20130058417PREDICTION IMAGE GENERATION DEVICE, MOVING IMAGE DECODING DEVICE, AND MOVING IMAGE CODING DEVICE - An inter-predicted image generation section (03-07-2013
20130058416IMAGE PROCESSING APPARATUS AND METHOD - An image processing apparatus and an image processing method capable of further improving coding efficiency while suppressing an increase in a load. For example, in a case a macro block with a size of 16×16 pixels or less used in AVC is a coding process target, a motion search and compensation unit performs a motion search using an image with the original size which is not reduced. In addition, for example, in a case where an extended macro block with a size larger than 16×16 pixels is a coding process target, the motion search and compensation unit performs a motion search using a reduced image.03-07-2013
20130058415METHOD AND APPARATUS FOR ENCODING/DECODING MOTION VECTOR - Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding the motion vector includes: selecting, as a mode of encoding information about a motion vector predictor of the current block, a first mode in which information indicating the motion vector predictor from among at least one motion vector predictor is encoded or a second mode in which information indicating generation of the motion vector predictor based on blocks or pixels included in a previously encoded area adjacent to the current block is encoded; determining the motion vector predictor of the current block according to the selected mode and encoding the information about the motion vector predictor of the current block; and encoding a difference vector between the motion vector of the current block and the motion vector predictor of the current block.03-07-2013
20130058414IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING SYSTEM - Provided is an image processing apparatus including an encoding processing unit that generates a plurality of encoded streams of different display sizes with respect to each of a plurality of picture contents, encodes the picture contents in units of predetermined blocks using the encoded streams, and generates an encoded stream of a multi-picture reproduction image to display the plurality of picture contents at the same time. When parameters regarding encoding of an original block that is a block of the picture contents corresponding to the predetermined block, which are included in the encoded streams of the picture contents, are prohibition parameters prohibited in the encoded stream of the multi-picture reproduction image, the encoding processing unit decodes the encoded streams of the original block, reencodes the streams, and sets the obtained encoded streams as the encoded streams of the predetermined block.03-07-2013
20110013698RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoder including: a memory to store a reference image which is a previously decoded image; and a synthesizer to receive an encoded bitstream including information of I and P frames, and execute motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and the reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method, and is performed using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame; wherein the rounding method information specifies one of a plurality of values; and wherein the rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-20-2011
20110013697MOTION VECTOR PREDICTION METHOD, AND APPARATUS AND METHOD FOR ENCODING AND DECODING IMAGE USING THE SAME - A method for predicting motion vectors to improve compressibility in an image compression codec which processes videos, and an image encoding/decoding apparatus and method using the same. A method for predicting a motion vector used during differential encoding of a motion vector for image encoding, the method including generating a motion vector list with candidate motion vectors for adjacent blocks of a target block, a predictive motion vector of which is to be obtained; calculating each distance between motion vectors included in the motion vector list; and determining a predictive motion vector for the target block by removing motion vectors in order of large distances between the motion vectors.01-20-2011
20110013696MOVING IMAGE PROCESSOR AND PROCESSING METHOD FOR MOVING IMAGE - A moving image processor includes a first and a second moving image processing unit which are able to perform parallel operation, and a data transfer unit having a first buffer and a second buffer. The first moving image processing unit processes macroblocks MB01-20-2011
20110013695MOVING IMAGE ENCODING APPARATUS AND MOVING IMAGE ENCODING METHOD - A moving image encoding apparatus comprises a motion vector search unit for dividing a screen into encoding blocks, dividing each encoding block into motion compensation blocks, and performing a motion vector search by referencing a past or future image with respect to a motion compensation block targeted for encoding, and an encoding unit for encoding a difference value between the motion compensation block and a prediction image that is based on the motion vector. The motion vector search unit sets a plurality of block types for each encoding block, performs rough motion vector search using a reduced image for each block type, computes an evaluation value for each block type based on the motion vectors, and determines whether to set a division method of the block type for which the highest evaluation value was obtained as a motion compensation block division method for a motion vector search in detail.01-20-2011
20090268822MOTION VECTOR DETECTION BY STEPWISE SEARCH - A moving image encoding apparatus includes a motion vector detecting unit for executing from a wide and coarse search to a narrow and fine search in a plurality of steps and in a stepwise manner to detect a motion vector of each block in an input image. The motion vector detecting unit includes a block combining unit for generating a combination block, depending on a result of detection in a search step, a search use pixel extracting unit for extracting a search use pixel to be used in a next search step, from the combination block, and a second search combination block searching unit for performing the next search step with respect to the combination block using the search use pixel, and setting a detected motion vector of the combination block as the motion vector of each block of the combination block.10-29-2009
20090268821BLOCK PARALLEL AND FAST MOTION ESTIMATION IN VIDEO CODING - Block parallel fast motion estimation for blocks of a video frame is provided where encoding of video blocks can be ordered to allow concurrent encoding thereof. Furthermore, motion vector prediction can be performed concurrently for independent video blocks where requisite blocks for calculating the prediction of a given block can be previously encoded, but not all blocks depend from each other; thus, parallel motion vector estimation is possible. Additionally, a fast motion estimation algorithm can be concurrently performed on a number of video blocks to search surrounding blocks to compute motion vectors as well. The concurrent processes can leverage the parallel architecture of one or more graphical processing units (GPU).10-29-2009
20090268820IMAGE ENCODING APPARATUS AND IMAGE ENCODING METHOD - Since a global motion vector detector is disposed on the same chip as, for example, an image converter utilizing spatial correlations, a first problem is that an original frame is not completely reproduced in an image, since the frame to be referred to when detecting the global motion vector is an image obtained by inverse-converting a nonreversibly compression-converted image. A second problem is that, upon high-efficient image encoding, the detection process of the global motion vector is performed even when it is not necessary to detect the global motion vector. An image encoding apparatus is equipped with a mechanism for detecting a global motion vector. The mechanism is located outside an image converter that utilizes spatial correlations, such as high-frequency component removal by a DCT and round-down by a quantization, and variable encoding.10-29-2009
20090268819MOTION VECTOR CALCULATION DEVICE AND MOTION VECTOR CALCULATION METHOD - The conventional technique has a problem that when a calculated global motion vector is incorrect, a search range is difference from the original one and the possibility of incorrect calculation of the motion vector becomes high and problem that the incorrect calculation of the motion vector may cause lowering of efficiency of the dynamic image encoding. A motion vector calculation device divides a global macro block into middle blocks and detects middle motion vectors for calculation of a global motion vector. Middle motion vectors considered to have abnormal values are excluded from the detected middle motion vectors. According to the remaining middle motion vectors, an accurate global motion vector is calculated.10-29-2009
20090067501DYNAMIC IMAGE ENCODING DEVICE, DYNAMIC IMAGE DECODING DEVICE, DYNAMIC IMAGE ENCODING METHOD, DYNAMIC IMAGE DECODING METHOD, DYNAMIC IMAGE ENCODING PROGRAM, AND DYNAMIC IMAGE DECODING PROGRAM - A moving image encoding device measures a band of a target image to be encoded and a band of a reference image by a band analyzer, and generates band-related information representing these bands. A prediction signal generator generates a prediction signal such that the signal matches the band of the target image, from the reference image, based on the band-related information. A difference unit obtains a difference between the target image and the prediction signal to generate a differential signal. A converter and a quantizer each encode the differential signal to generate an encoded differential signal. An inverse quantizer and an inverter each decode the encoded differential signal to generate a decoded differential signal. An adder adds the prediction signal to the decoded differential signal to generate a reproduced image. An output terminal outputs at least the encoded differential signal and the band-related information.03-12-2009
20120224638SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR MOTION DETECTION - A system, computer readable medium and a method for motion detection, the method includes: receiving multiple frames; generating a set of digits for each pixel of multiple pixels of each frame of the multiple frames; wherein each set of digits represents a pixel that belongs to a patch of a frame and represents relationships between (a) first similarities between the patch and a set of patches of a next frame that are located in locations that differ from each other and differ from a location of the patch; and (b) second similarities between the patch and a set of patches of a previous frame that are located in locations that differ from each other and differ from a location of the patch; and processing the sets of digits to detect motion.09-06-2012
20120224637MOVING PICTURE CODING METHOD, MOVING PICTURE DECODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding method includes: coding, using a motion vector, a current block to be coded; generating a plurality of predictive motion vectors; and coding the motion vector using one of the predictive motion vectors, and when a co-located block included in a coded picture and co-located with the current block has two reference motion vectors and reference directions of the two reference motion vectors are the same, a first prediction vector is generated using a first reference motion vector and a second to prediction vector is generated using a second reference motion vector in the generating of a plurality of predictive motion vectors.09-06-2012
20120224636VIDEO ENCODING APPARATUS, VIDEO ENCODING METHOD, AND COMPUTER PROGRAM - A video encoding apparatus, video encoding method, and computer program, which are capable of employing an adaptive filter that provides improved encoding performance while reducing the processing cost required for calculation. A video encoding apparatus estimates interpolation filter coefficients by means of an image frequency characteristic analysis. When a loop continuation condition is satisfied, the video encoding apparatus performs re-estimation of the interpolation filter coefficients. As the loop continuation condition, a first condition can be used, in which the number of times the re-estimation has been consecutively performed for the current frame to be processed is smaller than a predetermined number, for example.09-06-2012
20130064301METHODS AND APPARATUS FOR ADAPTIVE MOTION VECTOR CANDIDATE ORDERING FOR VIDEO ENCODING AND DECODING - Methods and apparatus are provided for adaptive motion vector candidate ordering for video encoding and decoding. An apparatus includes a video encoder for encoding a block in a picture by selecting an order of motion vector predictor candidates for the block responsive to a characteristic available at both the video encoder and a corresponding decoder. The characteristic excludes a mode in which the block is partitioned.03-14-2013
20130064302VIDEO COMPRESSION CODING DEVICE AND DECODING DEVICE APPLIED WITH MOTION COMPENSATION TECHNIQUE USING SELECTIVE REFERENCE FRAME, AND METHOD FOR DETERMINING SELECTIVE REFERENCE FRAME FOR MOTION COMPENSATION - Disclosed is a method of generating a reference frame of a video CODEC for implementing motion compensation through motion estimation. The present invention is to increase compression efficiency by additionally creating various reference frames applied to an intentional motion blur and a deblur filtering, and selecting reference frame having small residual frame data during execution of the motion estimation as final reference frames among original reference frames and various reference frames additionally created.03-14-2013
20130064300Method For Modeling Coding Information Of Video Signal For Compressing/Decompressing Coding Information - A method for context-modeling coding information of a video signal for compressing or decompressing the coding information is provided. An initial value of a function for probability coding of coding information of a video signal of an enhanced layer is determined based on coding information of a video signal of a base layer.03-14-2013
20130064299MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE ENCODING METHOD, AND MOVING PICTURE ENCODING PROGRAM, AND MOVING PICTURE DECODING APPARATUS, MOVING PICTURE DECODING METHOD, AND MOVING PICTURE DECODING PROGRAM - A provisional region dividing unit divides a block to be encoded into a plurality of provisional regions on a predetermined provisional boundary. A motion vector detecting unit detects a motion vector with respect to each provisional region. An actual region dividing•motion compensating unit generates a synthesized prediction block by generating a plurality of prediction blocks corresponding to the block to be encoded from a reference image by using the motion vector of each provisional region, deciding an actual boundary based on activities of the plurality of prediction blocks, and joining regions acquired by dividing the each prediction block on the actual boundary among the respective prediction blocks. A variable length encoding unit encodes a prediction difference block acquired by subtracting a synthesized prediction block from the block to be encoded, and the motion vector of each provisional region.03-14-2013
20130064298CONCURRENT ACCESS SHARED BUFFER IN A VIDEO ENCODER - A video encoder includes a buffer, a DMA engine, a motion estimator and a motion compensator. The buffer includes four pages where macroblocks are stored. The motion estimator generates a motion vector for a given macroblock. The motion compensator applies the motion vectors generated by the motion estimator to a previously encoded frame. Each of the four pages is concurrently accessed by one of the motion estimator, the motion compensator, and a channel of the DMA engine. Simultaneously the motion compensator accesses one page of the buffer containing a first set of macroblocks, the motion estimator accesses a second page of the buffer containing a second set of macroblocks, a first DMA engine channel writes a different set of macroblocks to a third page of the buffer and a second DMA engine channel writes another set of macroblocks to a fourth page of the buffer.03-14-2013
20130163671REDUCTION OF SPATIAL PREDICTORS IN VIDEO COMPRESSION - A system and a method are disclosed for encoding and decoding a video frame using spatial prediction. The video frame is separated into a plurality of image blocks, and a plurality of spatial predictors is created for an image block using methods well-known in the art. The set of predictors is reduced to a set containing fewer spatial predictors before continuing the coding process for the block. The reduction of spatial predictors involves comparing a plurality of spatial predictors and grouping or processing a subset of the spatial predictors to a set of representative spatial predictors. Because the number of spatial predictors is reduced, fewer bits may be used in a bit stream to identify a chosen spatial predictor, thus improving the efficiency of the coding process.06-27-2013
20090238283METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE - Provided are a method and apparatus for encoding an image by dividing a prediction block of a current block into a plurality of regions, thereby compensating for average values of pixel values in the prediction block by each of the plurality of the regions, and a method and apparatus for decoding the image. The method of encoding an image includes determining a first prediction block of a current block to be encoded, dividing the determined first prediction block into a plurality of regions, dividing the current block into a plurality of regions by the same number as in the divided first prediction block and calculating a difference value between an average value of pixels of each region of the first prediction block and an average value of pixels of each region of the corresponding current block, compensating each region of the divided first prediction block by using the difference value and generating a second prediction block, and encoding a difference value between the second prediction block and the current block.09-24-2009
20090238282Method and device for generating an image data stream, method and device for reconstructing a current image from an image data stream, image data stream and storage medium carrying an image data stream - The invention is related to the generation of an image data stream and the reconstruction of an image from an image data stream.09-24-2009
20090238281RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A recording medium having recorded thereon information related to coded data of an image sequence; wherein the information related to coded data of an image sequence is a set of coded frame information of a plurality of frames of an image sequence; wherein the coded frame information includes: information related to a difference image between an image of a current frame and a prediction image of the current frame, the prediction image being synthesized by performing motion compensation, information related to motion vectors estimated in performing the motion compensation, and rounding method information specifying either a positive rounding method or a negative rounding method for interpolating intensity values of pixels in performing the motion compensation when the input image is coded as a P frame, wherein no rounding method information is included in the coded frame information when the input image is coded as an I frame.09-24-2009
20090238280Method and Apparatus for Video Error Concealment Using Reference Frame Selection Rules - There are provided methods and apparatus for block-based error concealment. An apparatus includes an error concealment module for concealing a current block in a lost picture in a group of pictures by using a last available inter-coded picture in a previous group of pictures, when the lost picture is a first inter-coded picture in the group of pictures. The group of pictures has a pattern characterized as an intra-coded picture followed by a sequence of inter-coded pictures.09-24-2009
20090238277Processing Video Data At A Target Rate - A system comprising a processor and a compression module coupled to the processor. The compression module is adapted to perform motion estimation on video data using an algorithm, the motion estimation performed at a rate. If the processor determines a difference between the rate and a target rate, the processor adjusts a precision level of the algorithm such that the difference is decreased.09-24-2009
20090232218MOTION VECTOR ENCODING DEVICE AND DECODING DEVICE - A prediction error generating unit generates a predictive vector from the motion vectors of a plurality of adjacent blocks, and obtains a difference from a target vector. A plurality of variable-length coding units respectively encode the output of the prediction error generating unit with different encoding methods. A determining unit estimates the accuracy of the predictive vector generated by the prediction error generating unit based on the degrees of non-uniformity of the motion vectors of the plurality of adjacent blocks. A selecting unit selects one of the encoding results obtained by the plurality of variable-length coding units.09-17-2009
20090232217METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE - Provided are a method and apparatus for encoding an image, which can variably encode a residual of a current block that is predicted with a skip mode according to prediction modes of neighboring blocks, and a method and apparatus for decoding the encoded image. When both the prediction mode of the current block and the prediction modes of the neighboring blocks are skip modes, since the method of encoding the image also encodes the residual of the current block that is predicted with the skip mode, more bits can be assigned to the current block with a high probability of acting as a reference block for other blocks.09-17-2009
20090232214Video coding and decoding - A decoder for video signals, such as MPEG, which uses motion-compensated bidirectional predictive coding, performs concealment of lost or corrupted portions of a picture. For this purpose, it estimates missing motion vectors by combining the two vectors which accompany a bidirectionally coded frame to create a substitute vector. An encoder can be modified to enhance this decoder operation, including forcing at least one frame per group of frames to be coded using bidirectional prediction, and constraining the two vectors so that the substitute vector is closer to the wanted value.09-17-2009
20090232213Method and apparatus for super-resolution of images - A method to generate super-resolution images using a sequence of low resolution images is disclosed. The method includes generating an estimated high resolution image, motion estimating between the estimated high resolution image and comparison images from the sequence of low resolution images, motion-compensated back projecting, and motion-free back projecting that results in a super resolved image. A corresponding system for generating super-resolution images includes a high resolution image estimation module, a motion estimating module, a motion-compensated back projection module, a motion-free back projection module, an input interface, and an output interface.09-17-2009
20120230414Method Of Signalling Motion Information For Efficient Scalable Video Compression - Embodiments of a method for incrementally coding and signaling motion information for a video compression system involving a motion adaptive transform and embedded coding of transformed video samples using a computer are disclosed herein. In one such embodiment, the method includes (a) storing computer-readable instructions in the computer which, when executed, produce an embedded motion field bit-stream, representing each, motion field in coarse to fine fashion and (b) storing computer-readable instructions in the computer which, when executed, interleave contributions from said embedded motion field bit-stream with successive contributions from said embedded coding of the transformed video samples.09-13-2012
20090010338PICTURE ENCODING USING SAME-PICTURE REFERENCE FOR PIXEL RECONSTRUCTION - Digital pictures may be encoded by padding all un-processed pixels within a currently processing picture with temporary pixel values; searching the picture for a matching section for use as a reference in pixel reconstruction of a section of the picture independent of whether the picture is intra-coded or inter-coded; and using the matching section to perform pixel prediction on the section to generate one or more predicted pixels for the section.01-08-2009
20090010337PICTURE DECODING USING SAME-PICTURE REFERENCE FOR PIXEL RECONSTRUCTION - Digitally encoded pictures may be decoded by padding all un-decoded pixels within a currently decoding picture with temporary pixel values to produce a padded picture and performing motion compensation using the padded picture as a reference picture.01-08-2009
20090010336MOTION ESTIMATION OPTIMIZATIONS FOR AUDIO/VIDEO COMPRESSION PROCESSES - Motion estimation (ME) optimizations are provided for video encoding and compression processes that efficiently share data processing between host and graphics processing models. The optimizations take into account block level dependencies introduced by a corresponding encoding model, such as dependencies introduced by H.264/AVC among adjacent blocks. Arithmetic intensity of the graphics processing is adjustable to the underlying graphics hardware for further optimization, resulting in improved, real-time encoding of video data.01-08-2009
20090010335Control of data processing - Data processing apparatus arranged to receive successive images from a video camera and to receive audio data from a microphone comprises means for detecting inter-image motion in the video images; means for detecting audio signals in the associated audio data satisfying one or more predetermined audio criterion; and activation means, for activating a control function of the data processing apparatus in response to a predetermined sequence of a detection of inter-image motion satisfying one or more predetermined motion criterion and a detection of an audio signal in the associated audio data which satisfies the predetermined audio criteria.01-08-2009
20120114044VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.05-10-2012
20120114043METHOD AND APPARATUS FOR ENCODING VIDEO BY MOTION PREDICTION USING ARBITRARY PARTITION, AND METHOD AND APPARATUS FOR DECODING VIDEO BY MOTION PREDICTION USING ARBITRARY PARTITION - Disclosed is a method and apparatus of encoding a video, the method including: splitting video data into a maximum coding unit; encoding the video data of the maximum coding unit based on deeper coding units of hierarchical structures in which a coding unit of an upper depth is split as a depth deepens, according to at least one split region of the maximum coding unit, and determining a coding depth at which an encoding result is to be output, including inter prediction using partitions obtained by splitting the coding unit according to arbitrary ratios; and outputting a bitstream including the encoded video data corresponding to a coding depth for the at least one split region according to maximum coding units and information regarding the coding depth and encoding modes.05-10-2012
20120114042IN LOOP CONTRAST ENHANCEMENT FOR IMPROVED MOTION ESTIMATION - The present invention relates to a motion estimation method comprising the steps of: providing first image data, providing second image data, block-matching a source block of the first image date with target blocks of the second image data to determine a motion vector corresponding to the position of the target block that most accords with the source block. The method further comprises a contrast enhancement step which is applied on source blocks and/or target blocks to improve block-matching. The invention also relates to a motion estimation device.05-10-2012
20120114041MOTION VECTOR GENERATION APPARATUS, MOTION VECTOR GENERATION METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM - A motion vector generation apparatus which generates a motion vector utilized to execute motion-compensated encoding based on comparison between a block to be encoded in an image to be encoded and a reference block in a reference image. The apparatus sequentially selects a candidate from a plurality of motion vector candidates, sequentially calculates differences between pixel values of the block to be encoded and pixel values of the reference block corresponding to respective motion vector candidates, calculates, as an average difference, differences between an average pixel value obtained by averaging the pixel values of the block to be encoded and respective pixel values of the block to be encoded, decides a weighting coefficient based on a ratio between a minimum difference and the average difference, and calculates, for each selected motion vector candidate, an evaluation value for deciding a motion vector candidate having a minimum evaluation value.05-10-2012
20120114040SYSTEM AND METHOD FOR ENHANCING COMPRESSION USING SKIP MACRO BLOCK ON A COMPRESSED VIDEO - A method, apparatus, and computer readable medium for skip macro block compression of a compressed video. The method includes, for at least one INTER frame, saving a set of macro blocks including at least one of a macro block having a motion vector greater than a predetermined motion vector threshold, a macro block having positional correspondence to at least one macro block having a motion vector, a macro block having a size greater than a predetermined macro block size threshold, and a macro block having positional correspondence to a second macro block in a previous group of pictures, the second macro block having a motion vector. The method deletes and marks as skipped one or more remaining macro blocks, and merges the set in an order to create a compressed frame including a skipped macro block. The processor implements the method, and the computer readable medium contains processor instructions.05-10-2012
20130188714VIDEO IMAGE ENCODING DEVICE, VIDEO IMAGE ENCODING METHOD - A video image encoding device includes a calculation unit for calculating a decoding time of each group including plural blocks; a source encode unit for encoding each of the plural blocks based on the encoding amount of each block controlled based on the decoding time and generating compressed data; and an entropy encode unit for performing an arithmetic encoding process on the compressed data in each block and outputting a bit stream. The entropy encode unit outputs undetermined bits retained by the arithmetic encoding process when all bits corresponding to the compressed data in each group are not output at a time point when the arithmetic encoding process on the compressed data in a predetermined number of blocks in a next group is finished, and the calculation unit shifts the decoding time of each group by a processing time of the predetermined number of blocks.07-25-2013
20130188715DEVICE AND METHODS FOR MERGE LIST REORDERING IN VIDEO CODING - A video coding device configured according to some aspects of this disclosure includes a memory configured to store an initial list of motion vector candidates and a temporal motion vector predictor (TMVP). The video coding device also includes a processor in communication with the memory. The processor is configured to obtain a merge candidate list size value (N) and identify motion vector candidates to include in a merge candidate list having a list size equal to the merge candidate list size value. The merge candidate list may be a merge motion vector (MV) candidate list or a motion vector predictor (MVP) candidate list (also known as an AMVP candidate list). The processor generates the merge candidate list such that the merge candidate list includes the TMVP, regardless of the list size.07-25-2013
20100086049VIDEO CODING USING TRANSFORMS BIGGER THAN 4X4 AND 8X8 - In a video processing system, a method and system for applying transforms larger than 8×8 and non-rectangular transforms, and generating transform size syntax elements indicative of the transforms for video decoding are provided. The transform size syntax element may be generated by an encoder based on a prediction block size of a video block and the contents of the video block. Further, the transform size syntax element may be generated according to a set of rules to select from 4×4, 8×8, and larger transform sizes during an encoding process. A decoder may perform an inverse transform based on the transform size syntax element and the rules used by the encoder. The transform size syntax element may be transmitted to the decoder as part of the encoded video bitstream.04-08-2010
20100086050MESH BASED FRAME PROCESSING AND APPLICATIONS - A method of processing sequential frames of data comprises repeating the following steps for successive frames of data: acquiring at least a reference frame containing data points and a current frame of data points; identifying a set of anchor points in the reference frame; assigning to each anchor point in the reference frame a respective motion vector that estimates the location of the anchor point in the current frame; defining polygons formed of anchor points in the reference frame, each polygon containing data points in the reference frame, each polygon and each data point contained within the polygon having a predicted location in the current frame based on the motion vectors assigned to anchor points in the polygon; for one or more polygons in the reference frame, adjusting the number of anchor points in the reference frame based on accuracy of the predicted locations of data points in the current frame; and if the number of anchor points is increased by addition of new anchor points, then assigning motion vectors to the new anchor points that estimate the location of the anchor points in the current frame.04-08-2010
20100086054VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-08-2010
20100086055VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-08-2010
20120236944METHOD AND APPARATUS FOR ENCODING VIDEO BY MOTION PREDICTION USING ARBITRARY PARTITION, AND METHOD AND APPARATUS FOR DECODING VIDEO BY MOTION PREDICTION USING ARBITRARY PARTITION - Disclosed is a method and apparatus of encoding a video, the method including: splitting video data into a maximum coding unit; encoding the video data of the maximum coding unit based on deeper coding units of hierarchical structures in which a coding unit of an upper depth is split as a depth deepens, according to at least one split region of the maximum coding unit, and determining a coding depth at which an encoding result is to be output, including inter prediction using partitions obtained by splitting the coding unit according to arbitrary ratios; and outputting a bitstream including the encoded video data corresponding to a coding depth for the at least one split region according to maximum coding units and information regarding the coding depth and encoding modes.09-20-2012
20120236943VIDEO ENCODING AND DECODING METHOD AND APPARATUS USING WEIGHTED PREDICTION - Provided is a video encoding and decoding method and apparatus. The video encoding method includes selecting a plurality of reference blocks based on a plurality of motion vectors and setting weights assigned to the plurality of reference blocks independently for each of a plurality of regions of a current block in order to predict and encode the current block, thereby providing a new encoding mode allowing accurate prediction of the current block and thus improving the compression rate of video encoding.09-20-2012
20120236942Method and Apparatus for Deriving Temporal Motion Vector Prediction - A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block and a flag is used to indicate the co-located picture. More than one co-located reference blocks can be used to derive the temporal MVP and the co-located reference blocks can be selected from the co-located block as well as neighboring blocks of the co-located block. A search set comprises search motion vectors associated with the co-located reference block(s) is formed. The search motion vector (MV) corresponding to the co-located reference block in the same reference list is searched before the search MV in a different reference list. Various schemes to accommodate implicit method of deriving co-located picture are also disclosed.09-20-2012
20120236941Method and Apparatus for Derivation of Spatial Motion Vector Candidate and Motion Vector Prediction Candidate - An apparatus and method for deriving a motion vector predictor are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted or stored. Motion vector prediction has been used to further conserve the bitrate associated with motion vector coding. In a conventional coding system, a motion vector predictor (MVP) is selected from the spatial MVPs and temporal MVP. The spatial MVP according to a conventional approach is based on motion vectors (MVs) of neighboring blocking pointing to a target reference picture in a given reference list. Embodiments according to the present invention perform the MVP search among an extended search set including MVs pointing to other reference pictures in the given reference list or the other reference list and MVs pointing to the target reference picture in the given reference list or the other reference list. Other aspects of the present invention address the search order of the search set and configuration of neighboring blocks.09-20-2012
20120236940Method for Efficient Parallel Processing for Real-Time Video Coding - Embodiments of the invention include a parallel method for real-time video encoding in a multicore processor system. A first frame of video data is divided into groups. Each group has one or more rows of a plurality of macroblocks. Motion estimation is performed on a second group following a first group by a first core of said multicore system. While said motion estimation is being performed by said first core, compression-and-reconstruction is performed on said first group by a second core.09-20-2012
20130163670MULTIVIEW VIDEO CODING REFERENCE PICTURE SELECTION UNDER A ONE REFERENCE PICTURE CONSTRAINT - A method for coding a dependent view picture based on a reference picture includes selecting a reference picture from a base view picture list if a metric of intra macroblocks in an evaluated picture is greater than a first threshold, selecting a reference picture from a dependent view picture list if a metric of skipped macroblocks in the evaluated picture is greater than a second threshold, and coding a dependent view picture using the selected reference picture. An application-controlled weighting mechanism may be used if both of the thresholds are not met.06-27-2013
20130163672APPARATUS FOR DETERMINING MOTION VECTORS AND A REFERENCE PICTURE INDEX FOR A CURRENT BLOCK IN A PICTURE TO BE DECODED - In one embodiment, the apparatus includes a decoder. The decoder is configured to obtain first and second motion vectors of a block other than the current block. The other block neighbors the current block at one of a left, top and top right position. The decoder is configured to determine first and second motion vectors of the current block using the first and second motion vectors of the other block such that the first motion vector of the current block has a same direction as the first motion vector of the other block and the second motion vector of the current block has a same direction as the second motion vector of the other block.06-27-2013
20130163673METHODS AND APPARATUS FOR ENCODING VIDEO SIGNALS USING MOTION COMPENSATED EXAMPLE-BASED SUPER-RESOLUTION FOR VIDEO COMPRESSION - Methods and apparatus are provided for encoding video signals using motion compensated example-based super-resolution for video compression. An apparatus includes a motion parameter estimator for estimating motion parameters for an input video sequence having motion. The input video sequence includes a plurality of pictures. The apparatus also includes an image warper for performing a picture warping process that transforms one or more of the plurality of pictures to provide a static version of the input video sequence by reducing an amount of the motion based on the motion parameters. The apparatus further includes an example-based super-resolution processor for performing example-based super-resolution to generate one or more high-resolution replacement patch pictures from the static version of the video sequence. The one or more high-resolution replacement patch pictures are for replacing one or more low-resolution patch pictures during a reconstruction of the input video sequence.06-27-2013
20120269268MOTION VECTOR ENCODING/DECODING METHOD AND DEVICE AND IMAGE ENCODING/DECODING METHOD AND DEVICE USING SAME - The present disclosure relates to a method and apparatus for encoding/decoding a motion vector and a method and apparatus for encoding/decoding video using same. The motion vector encoding method includes selecting a predicted motion vector candidate set including one or more predicted motion vector candidates for a block; determining one or more search ranges for predicted motion vector candidate set; selecting one predicted motion vector candidate among one or more predicted motion vector candidates as predicted motion vector for each search point with respect to each search point within search range by first determination criterion prearranged with video decoding apparatus; selecting one predicted motion vector among the predicted motion vectors for each search point by a second determination criterion not prearranged with the video decoding apparatus, and determining predicted motion vector, differential motion vector, and current motion vector; and generating and encoding the differential motion vector as motion information.10-25-2012
20110032993IMAGE DECODING DEVICE, IMAGE DECODING METHOD, INTEGRATED CIRCUIT, AND RECEIVING DEVICE - An image memory access control unit (02-10-2011
20100272182Image flow knowledge assisted latency-free in-loop temporal filter - Digital image acquisition device such as CCD/CMOS sensors often introduces random temporal noise into digital video sequences. Temporal noise generally carries high frequency components in both the spatial and temporal domains and is also random in nature. Because of these properties, they are generally very expensive to encode and would substantially degrade coding efficiency. It is therefore important to eliminate or suppress such temporal noise in video inputs prior to encoding. The present invention provides a methodology to achieve such a goal in a highly cost-effective manner where coding performance, latency, computational cost, and memory requirements are optimized. This methodology can be efficiently implemented as part of digital video compression algorithm and scales nicely for various bitrates.10-28-2010
20120099652METHOD AND APPARATUS FOR SCALABLE MOTION VECTOR CODING - A method and apparatus for scalable coding of a motion vector generated during motion estimation, in which a generated motion vector field is separated into a base layer and an enhancement layer according to pixel accuracies to obtain a layered structure for a motion vector. In addition, the motion vector field has a layered structure including a base layer composed of motion vectors of blocks larger than or equal to a predetermined size and at least one enhancement layer composed of motion vectors of blocks smaller than a predetermined size.04-26-2012
20120134417METHOD AND SYSTEM FOR SELECTIVELY PERFORMING MULTIPLE VIDEO TRANSCODING OPERATIONS - Method and system for transcoding a sequence of input images into a sequence of output images that can effectively handle one or more transcoding uses cases are presented. The embodiments of the invention exploit the incoming metadata retrieved from the decoding process to adapt the video content and to achieve a significant speed-up in comparison to the traditional cascaded approach while maintaining high quality for output images.05-31-2012
20120177124Video encoding and decoding with improved error resilience - A portion of an image, belonging to a current encoding unit, is encoded by motion compensation with respect to a reference image portion indicated by an item of motion information. A motion information predictor is selected from among a set of motion information predictors and the item of motion information is encoded with respect to said motion information predictor. The set of motion information predictors used is permitted to include at least one temporal motion information predictor associated with an image portion of a previous image of said sequence but is not permitted to include any spatial motion information predictor that is unobtainable from encoded data of said current encoding unit, for example a spatial motion information predictor that was itself encoded with respect to a temporal motion information predictor.07-12-2012
20100202540VIDEO CODING METHOD, VIDEO DECODING METHOD, VIDEO CODER, AND VIDEO DECORDER - A video coding method, a video decoding method, a video coder, and a video decoder are disclosed herein. A video coding method includes: performing base-layer coding for the first view, and extracting prediction information of at least one layer by combining a locally decoded first view and a second view; performing enhancement-layer coding for prediction information of at least one layer respectively; and multiplexing the enhancement-layer codes and the base-layer codes of the first view to obtain encoded information. Through the embodiments of the present invention, the contents of the 3D video are encoded hierarchically, and various 3D display devices connected in different networks can display the 3D video hierarchically.08-12-2010
20100034272Image Display Apparatus, Video Signal Processor, and Video Signal Processing Method - The present invention provides an image display apparatus capable of reducing a judder and simultaneously weakening the degree of reducing the judder at the time of converting frame rate of a film signal using motion compensation. At the time of converting frame rate of a video signal by adding N (N: integer of 2 or larger) interpolation frames into between original frames neighboring each other along time base obtained from video images in original frames by using motion compensation so that interpolation positions of the video images in the N interpolation frames are set to a deviated position which is closer to the nearest video image in the original frames rather than positions obtained by equally dividing, into (N+1) portions, magnitude of video image motion between an earlier original frame and a following original frame along the time base.02-11-2010
20100034284VIDEO ENCODING/DECODING MEHTOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034283VIDEO ENCODING/DECODING MEHTOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034282VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034281VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034280VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034278VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034276VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20080212679Motion estimation with dual search windows for high resolution video coding - A memory-efficient motion estimation technique for high-resolution video coding is proposed. The main objective is to reduce the external memory access, especially for limited local memory resource. The reduction of memory access can successfully save the notorious power consumption. The key to reduce the memory access is based on center-biased algorithm in that the center-biased algorithm performs the motion vector searching with the minimum search data. While considering the data reusability, the proposed dual-search-windowing approaches use a secondary windowing as an option per searching necessity, by which the loading of search windows can be alleviated and hence reduce the required external memory bandwidth, without significant quality degradation.09-04-2008
20100158120Reference Picture Selection for Sub-Pixel Motion Estimation - A video coding system includes a prediction module configured to perform multi-reference picture sub-pixel motion estimation. Reference pictures are selected for the sub-pixel motion estimation based on full-pixel motion estimation. A cost function is used to select the reference pictures from one or more groups of reference pictures for a block in a macroblock. The cost is based on full-pixel motion estimation errors and a predicted motion vector for the block. The selected reference pictures are used for sub-pixel motion estimation to get the final motion vector for each block.06-24-2010
20090154562METHOD OF CODING AND TRANSMISSION OF PROGRESSIVE VIDEO USING DIFFERENTIAL SIGNAL OVERLAY - A method of coding and transmission of a 108006-18-2009
20110280309METHOD FOR DECODING A STREAM REPRESENTATIVE OF A SEQUENCE OF PICTURES, METHOD FOR CODING A SEQUENCE OF PICTURES AND CODED DATA STRUCTURE - A method for decoding a stream of coded data representative of a sequence of pictures is described. The method comprises the following steps: 11-17-2011
20110280310MOVING PICTURE ENCODING METHOD AND DECODING METHOD - A moving picture decoding method, which generates a predicted image using information on motion vectors and information on reference images, the moving picture decoding method having multiple prediction modes including a mode without motion vector decoding, including: a step of selecting a frame(s) to be referenced to in the prediction of each prediction direction in the prediction mode from among multiple candidate reference frames, and a step of selecting motion vector information used in the prediction mode, wherein said step of selecting motion vector information is performed based on whether candidate blocks including the block adjacent to the left side of or the upper side of a current block have a motion vector; and moving picture decoding is performed by generating said predicted image using the information on said selected reference frame and the information on said selected motion vectors in said prediction mode.11-17-2011
20110280308MOVING IMAGE ENCODING APPARATUS AND METHOD OF CONTROLLING THE SAME - There is provided a moving image encoding apparatus for performing motion compensation prediction encoding. The apparatus comprises, among other things: a calculation unit configured to calculate, for each of a plurality of motion vectors, a difference between an encoding target block image and a reference block image which exists at a position moved based on the motion vector from a position in a reference image corresponding to the predetermined position; and a selection unit configured to select one motion vector from the plurality of motion vectors such that reducing a code amount when the selected motion vector is encoded and reducing the difference corresponding to the selected motion vector are achieved in predetermined balance. The predetermined balance gives priority to reducing the difference over reducing the code amount as a minimum value of a plurality of differences calculated by the calculation unit becomes smaller.11-17-2011
20130022121METHODS AND APPARATUS FOR CONCEALING CORRUPTED BLOCKS OF VIDEO DATA - Corrupted subdivision s of streaming data are concealed using a matching subdivision in a previously reconstructed reference picture. The matching subdivision is located by applying a recovered motion vector to a co-located subdivision in the reference picture for which motion vector information has been lost. The recovered motion vector is obtained using a reference motion vector from an available neighboring subdivision of the co-located subdivision. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.01-24-2013
20120189059BUFFER COMPRESSION FOR MOTION VECTOR COMPETITION - A method for decoding video includes creating a first list of motion vectors from at least one neighboring block in a current frame of the video and creating a second list of motion vectors from at least one previous block in a temporally earlier frame of the video. A third list of motion vectors is created based upon the first list and the second list. Based upon receiving a motion vector competition control parameter selecting one of the motion vectors from the third list, wherein the second list of motion vectors is further based upon a flooring function.07-26-2012
20100158129METHODS AND APPARATUS FOR MOTION SKIP MODE IN MULTI-VIEW CODED VIDEO USING REGIONAL DISPARITY VECTORS - There are provided methods and apparatus for motion skip mode in multi-view coded video using regional disparity vectors. An apparatus includes an encoder for encoding an image block of a picture corresponding to at least one view of multi-view video content by obtaining motion information for the image block based upon disparity information for a region of another picture corresponding to at least one other view of the multi-view video content. The disparity information for the region of the other picture corresponds to less than an entirety of the other picture.06-24-2010
20090310681SYSTEM FOR ANALYSIS OF MOTION - A computer system for real-time determination of a motion vector comprising an image processor to apply an image processing filter to a normalized frame element of a first image frame, yielding a filtered frame element having associated filtered pixel values, a pixel selector to select a first reference pixel from the filtered frame element having the highest value of the filtered pixel values, an optic flow module to determine a first optic flow applied at a location of the first reference pixel, a pattern matching module to perform pattern matching between the normalized pixel values of the normalized frame element and normalized frame elements of a second image frame, yielding a plurality of pattern matching scores, and a motion vector determiner to determine a motion vector based on a lowest one of the pattern matching scores. Related apparatus and methods are also described.12-17-2009
20110129016IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD - Provided are a device and a method for efficiently compressing information by performing improved removal of signal correlations according to statistical and local properties of a video signal in a 4:4:4 format which is to be encoded. The device includes: a prediction unit for determining, for each color component, a motion prediction mode exhibiting a highest efficiency among a plurality of motion prediction modes, and detecting a motion vector corresponding to the determined motion prediction mode, to thereby perform output; and a variable-length encoding unit for determining, when performing arithmetic coding on the motion prediction mode of the each color component, an occurrence probability of a value of the motion prediction mode of the each color component based on a motion prediction mode selected in a spatially-adjacent unit region and a motion prediction mode selected in a temporally-adjacent unit region, to thereby perform the arithmetic coding.06-02-2011
20100046624METHOD AND APPARATUS FOR TRANSLATION MOTION STABILIZATION - A method and apparatus for translation motion stabilization. The method includes initializing clip bias estimation and programmable sequencer, calculating sum of absolute differences and sum of absolute differences derivatives, utilizing the clip bias estimation, programmable sequencer, sum of absolute differences and sum of absolute differences derivatives to estimate block motion vector, frame motion vector and unwanted motion vector, and compensating for motion to produce a stabilized video02-25-2010
20110142131CAPTURE, EDITING AND ENCODING OF MOTION PICTURES ENCODED WITH REPEATING FIELDS OR FRAMES - An image sequence captured at a first image rate is encoded as an encoded image sequence at a second image rate with information in the encoded image sequence indicative of images that are repeated when decoded. To assist in editing a video program using the encoded image sequence, the information in the encoded image sequence indicative of repeated images may be cleared and image index information for the encoded image sequence generated to map a temporal position of an image in a decoded image sequence to a position of corresponding data in the encoded image sequence. Temporal positions used with the image index information correspond to the first image rate. Editing video involves defining a sequence of clips that reference source encoded image sequences using edit points. Each clip has a start and end point in its corresponding source and a position in the edited video program. The temporal resolution of these edit points corresponds to the first image rate. An edited video program may be output as an encoded image sequence, using the source encoded image sequences referenced by the sequence of clips. The encoded image sequence is constructed according to the edited sequence of clips, using the source encoded image sequences.06-16-2011
20090207916SYSTEM AND METHOD FOR ALLOCATING BITSTREAM OF SCALABLE VIDEO CODING - The present invention provides a system for allocating a bitstream of scalable video coding (SVC). The system includes an adapter and an extractor. The adapter is employed for receiving a bitstream produced by a video encoder and producing an extracting parameter of the bitstream according to the feature of a bitstream parameter in the bitstream content. The extractor is employed for extracting and allocating the bitstream according to the above-mentioned extracting parameter. In this way, the present invention is able to achieve the maximum usage efficiency of bandwidth and the optimum frame quality.08-20-2009
20120288007METHOD AND APPARATUS FOR ENCODING VIDEO USING VARIABLE PARTITIONS FOR PREDICTIVE ENCODING, AND METHOD AND APPARATUS FOR DECODING VIDEO USING VARIABLE PARTITIONS FOR PREDICTIVE ENCODING - A video encoding method and apparatus and a video decoding method and apparatus are provided. The video encoding method includes: prediction encoding in units of a coding unit as a data unit for encoding a picture, by using partitions determined based on a first partition mode and a partition level, so as to select a partition for outputting an encoding result from among the determined partitions; and encoding and outputting partition information representing a first partition mode and a partition level of the selected partition. The first partition mode represents a shape and directionality of a partition as a data unit for performing the prediction encoding on the coding unit, and the partition level represents a degree to which the coding unit is split into partitions for detailed motion prediction.11-15-2012
20120288005MOTION VECTOR CORRECTION DEVICE AND METHOD AND VIDEO SIGNAL PROCESSING APPARATUS AND METHOD - A motion vector detector 11-15-2012
20090086822VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-02-2009
20090086820SHARED MEMORY WITH CONTEMPORANEOUS ACCESS FOR USE IN VIDEO ENCODING AND METHODS FOR USE THEREWITH - A motion compensation module includes a shared memory that stores one of a sequence of images. A motion search module generates a plurality of motion search motion vectors based on the one of the sequence of images stored in the shared memory. A motion refinement module generates a plurality of refined motion vectors based on the one of the sequence of images stored in the shared memory, wherein the motion search module and the motion refinement module contemporaneously access the one of the sequence of images stored in the shared memory.04-02-2009
20120189060APPARATUS AND METHOD FOR ENCODING AND DECODING MOTION INFORMATION AND DISPARITY INFORMATION - An apparatus and method for encoding and de1/5/2012coding motion information and disparity information are provided. The apparatus may extract a vector from peripheral blocks of a current block, which is a vector of the same type as a vector used for predicting and compensating the current block, and perform prediction and compensation of the current block using the extracted vector.07-26-2012
20130022123VIDEO CODING APPARATUS, VIDEO CODING METHOD AND VIDEO CODING PROGRAM, AND VIDEO DECODING APPARATUS, VIDEO DECODING METHOD AND VIDEO DECODING PROGRAM - A motion vector detector detects a motion vector from a first reference image for a coding target block. A multiple reference image composition unit creates a composite reference block that a first reference block extracted from the first reference image using the motion vector has been composited with a predetermined region of at least one of other reference images. Setting the composite reference block as a prediction block, an entropy encoder encodes a prediction difference block that the prediction block has been subtracted from the coding target block.01-24-2013
20120294364NON-SUBSAMPLED ENCODING TECHNIQUES - Techniques for non-subsampled video encoding of R′G′B′ data using Y′, Cb and Cr data to generate compressed data wherein the Y′-plane comprises three separate color frames that are not interleaved, and recovering the data therefrom.11-22-2012
20120294368IMAGE PROCESSING APPARATUS AND METHOD AS WELL AS PROGRAM - The present invention relates to an image processing apparatus and method and a program which can reduce the bit amount included in a stream and a used region of a memory. In an image encoding apparatus 11-22-2012
20120294367METHOD AND APPARATUS FOR LOW COMPLEXITY VIDEO ENCODING AND DECODING - This disclosure describes unique video encoding and decoding processes compliant to one or more specific coding standards, such as the H.264/AVC standard, without sacrificing coding efficiency. A higher resolution input image is divided into a corresponding set of lower resolution sub-sampled images. The first image of each set is coded as an independent I picture, or coded with respect to the first image of one or more other sets as a P or B picture. Each subsequent image of a set, other than the first image in each set, is encoded with respect to the first image of the same set or an image of another set as a regular P or B picture. A decoding process may employ a decoder conforming to the specific coding standard to decode the encoded data, by rearranging the decoded lower resolution sub-sampled images of each set into corresponding higher resolution output images.11-22-2012
20120288011CODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, RECORDING MEDIUM, AND PROGRAM - An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.11-15-2012
20120288010CODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, RECORDING MEDIUM, AND PROGRAM - An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.11-15-2012
20120288008CODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, RECORDING MEDIUM, AND PROGRAM - An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.11-15-2012
20120002727METHOD AND APPARATUS FOR MPEG-2 TO VC-1 VIDEO TRANSCODING - A method for transcoding from an MPEG-2 format to a VC-1 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the MPEG-2 format to generate a picture; (B) determining a mode indicator for the picture; and (C) coding the picture into an output video stream in the VC-1 format using one of (i) a VC-1 field mode coding and (ii) a VC-1 frame mode coding as determined from the mode indicator.01-05-2012
20110299600Moving Picture Encoding Method And Decoding Method - A moving picture decoding method including a prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side, including: in said prediction mode: selecting one reference frame from among a plurality of candidate reference frames including: a reference frame referenced by one or a plurality of adjacent blocks within a current frame and adjacent to a current block; and a prescribed reference frame not based on the reference frame referenced by the adjacent blocks, as the reference frame to be used in the prediction mode; determining a motion vector to be used in the prediction mode; and performing prediction processing using the selected reference frame and the determined motion vector, wherein determining motion vector information to be used for the current block in the prediction mode, based on availability of motion vector(s) of predetermined adjacent blocks and the current block belonging to the current picture and the predetermined adjacent blocks are decoded earlier than the current block.12-08-2011
20110299599METHOD AND APPARATUS FOR CODING MOTION INFORMATION - Video compression algorithms typically represent visual information by a combination of motion and texture data. Motion data describes the temporal relationship between the content of a frame and that of a previous frame. This invention describes a method and apparatus for efficiently encoding motion data, particularly in the presence of horizontal and/or vertical motion boundaries.12-08-2011
20110299597IMAGE PROCESSING METHOD USING MOTION ESTIMATION AND IMAGE PROCESSING APPARATUS - From first and second image data descriptive for first and second pictures captured in a first temporal distance to each other, a global motion estimator unit (12-08-2011
20110299596Fractional motion estimation method with adaptive mode selection - A fractional motion estimation method including the steps of categorizing search modes of the macroblock into a single mode, a reduced mode, and a full mode; determining a search mode of a to-be-process macroblock according to a predetermined condition; and conducting a fractional motion estimation of a to-be-estimated pixel according to the search mode determined in the aforesaid step. Therefore, the fractional motion estimation method can have the adaptive mode selection to spare some parts of computation for low throughput. In other words, it can effectively enhance efficiency of hardware, to lower power consumption, and to maintain consistent image quality.12-08-2011
20090016439Derivation of Frame/Field Encoding Mode for a Pair of Video Macroblocks - The method wherein the field or frame mode is selected according to the following steps: 01-15-2009
20090185623MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE DECODING DEVICE - When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.07-23-2009
20100290529REAL-TIME SUPERRESOLUTION AND VIDEO TRANSMISSION - A method and system of performing real-time video superresolution. A decoder receives a data stream representing a low resolution video and including global motion vectors relating to image motion between frames of the low resolution video. The decoder uses the global motion vectors from the received data stream and multiframe processing algorithms to derive a high resolution video from the low resolution video. The sharpness of the high resolution video may be enhanced.11-18-2010
20110286525Selecting Transforms for Compressing Visual Data - Encoding data includes: computing a first set of coefficients based on a plurality of transforms each computed over a different portion of an array of data, a second set of coefficients based on a plurality of transforms each computed over a different portion of the array of data, and a third set of coefficients based on a transform computed over the array of data; choosing a set of coefficients to represent the array of data from a group of multiple sets of coefficients, the group including the first set of coefficients, the second set of coefficients, and the third set of coefficients; and encoding the chosen coefficients and one or more parameters related to the chosen coefficients.11-24-2011
20110286527MOTION COMPENSATION METHOD, PICTURE CODING METHOD AND PICTURE DECODING METHOD - A picture coding apparatus (11-24-2011
20110135003UNI-MODAL BASED FAST HALF-PEL AND FAST QUARTER-PEL REFINEMENT FOR VIDEO ENCODING - A method of half-pixel interpolation and quarter-pixel interpolation are adapted for reducing the impact of aliasing within motion estimation. To estimate a motion vector with quarter-pixel accuracy more efficiently, the improved method is able to skip checking certain points using the uni-modal assumption. In an embodiment, a diamond based refinement is implemented. Within the diamond based refinement are half-pel refinement and quarter-pel refinements. Furthermore, within the half-pel refinement are methods for on-the-fly interpolation and pre-computed interpolation. Within quarter-pel refinement, the method depends on whether four neighbor half-pel points are checked or just one or two half-pel points. Moreover, within each of the different embodiments is the ability to focus on quality or speed wherein different methods are implemented to maximize the desired function. In another embodiment, a square based refinement is implemented.06-09-2011
20110293012MOTION ESTIMATION OF IMAGES - Provided is sub-block motion estimation that includes a full search with a reduced search area around a motion vector predictor. Also provided are a single (or unified) motion vector predictor and a function similar to a rate-distortion cost function. Also provided is a scanning order that can reduce or substantially eliminated redundant data loading and/or that can achieve different data re-use ratio. Further, provided herein is a reconfigurable multi-resolution motion vector re-use hardware architecture based on a single motion vector predictor and a function similar to a rate-distortion cost function. Further, through utilization of the disclosed aspects, only a small number of past motion vectors are propagated and the disclosed aspects can be reconfigured for video with different spatial resolution.12-01-2011
20120230416FAST MOTION ESTIMATION IN SCALABLE VIDEO CODING - Scalable Video Coding is recently attracting attentions due to its high flexibility. The current H.264/AVC scalable extension has adopted the Motion Compensated Temporal Filter (MCTF) framework to provide temporal scalability. In this paper, described is another fast motion estimation (ME) algorithm based on the MCTF framework. Simulation results show that the herein described algorithm can reduce the encoding complexity significantly while maintaining similar bit rate and PSNR, comparing with existing fast ME algorithms implemented in the reference software.09-13-2012
20110293017Moving Picture Encoding Method And Decoding Method - A moving picture decoding method including a prediction mode, including: in said prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side: selecting, from among multiple candidate reference frames, a frame(s) to be referenced to in the prediction mode; and determining motion vector information to be used in the prediction mode; and performing prediction processing using the selected reference frame and the determined motion vector, wherein when candidate blocks within a current frame and adjacent to a current block include blocks that use backward reference frames, a backward reference frame having a smallest index number is selected as the backward reference frame for the current block from the backward reference frames that said blocks using the backward reference frames have, wherein determining motion vector information to be used for the current block in the prediction mode, based on availability of motion vector(s) of predetermined adjacent blocks and the current block belonging to the current picture and the predetermined adjacent blocks are decoded earlier than the current block.12-01-2011
20110293016Moving Picture Encoding Method And Decoding Method - A moving picture decoding method including a prediction mode, including: in said prediction mode, in which prediction mode motion vector information of a current block in a current frame is not transmitted from an encoding side: selecting, from among multiple candidate reference frames, a frame(s) to be referenced to in the prediction mode; determining motion vector information to be used in the prediction mode; and performing prediction processing using the selected reference frame and the determined motion vector, wherein-when candidate blocks within a current frame and adjacent to a current block include blocks that use forward reference frames, a forward reference frame having a smallest index number is selected as the forward reference frame for the current block from the forward reference frames that said blocks using the forward reference frames have, wherein determining motion vector information to be used for the current block in the prediction mode, based on availability of motion vector(s) of predetermined adjacent blocks and the current block belonging to the current picture and the predetermined adjacent blocks are decoded earlier than the current block.12-01-2011
20110293015METHOD AND DEVICE FOR IMAGE INTERPOLATION SYSTEMS BASED ON MOTION ESTIMATION AND COMPENSATION - A motion estimation method and device are provided for processing images to be inserted, between a preceding original image and a following original image, into a sequence of images. Each image is divided into pixel blocks associated with motion vectors. For a current block of an image being processed, motion vectors associated with blocks of the image being processed and/or associated with blocks of a processed image are selected. Candidate vectors are generated from selected motion vectors. An error is calculated for each candidate vector. A penalty is determined for a subset of candidate vectors on the basis of the values of the pixels of the pixel block in the preceding original image from which the candidate motion vector points to the current block and/or on the basis of the values of the pixels of the pixel block in the following original image to which the candidate motion vector points from the current block.12-01-2011
20110293013Methods and Apparatus for Motion Compensation with Smooth Reference Frame in Bit Depth Scalability - Methods and apparatus are provided for motion compensation with a smooth reference frame in bit depth scalability. An apparatus includes an encoder for encoding picture data for at least a portion of a picture by generating an inter-layer residue prediction for the portion using an inverse tone mapping operation performed in the pixel domain for bit depth scalability. The inverse tone mapping operation is shifted from a residue domain to the pixel domain.12-01-2011
20110293010Method of Predicting Motion Vectors in Video Codec in Which Multiple References are Allowed, and Motion Vector Encoding/Decoding Apparatus Using the Same - Initial value is selected when motion estimation is performed using predicted motion vector in video codec in which multiple references are allowed, and coding amount of motion vectors is reduced using predicted motion vector. Motion vector encoding apparatus includes predicted motion vector generator that generates adjacent motion vectors of current block with respect to each of reference pictures and generates each predicted motion vector of the current block from the generated adjacent motion vectors, motion estimator that determines final motion vector of the current block and final reference picture corresponding to the final motion vector with regard to search regions of the reference pictures, differential unit that obtains difference between the final motion vector of the current block and final predicted motion vector corresponding to the determined final reference picture among the predicted motion vectors, and unit for encoding information about the final reference picture and the difference.12-01-2011
20110293009Video processing system, computer program product and method for managing a transfer of information between a memory unit and a decoder - Video processing system, computer program product and method for managing an exchange of information between a memory unit and a decoder, the method includes: (a) retrieving, from the memory unit, a first non-zero data structure that comprises only non-zero first transform coefficient groups; wherein first transform coefficient groups are associated with a first quality level; (b) retrieving, from the memory unit, second layer information; (c) processing, by the video decoder, the second layer information and the first non-zero data structure to provide second transform coefficient groups; (c) generating, by the video decoder, a second non-zero data structure that comprises only non-zero second transform coefficient groups; wherein the second non-zero data structure is associated with a second quality level that is higher than the first quality level; (d) generating second non-zero indicators that are indicative of non-zero transform coefficient groups, wherein the second non-zero data structure is associated with a second quality level that is higher than the first quality level; and (e) writing to the memory unit the second non-zero indicators.12-01-2011
20110293011Motion Estimation Apparatus and Motion Estimation Method - A motion estimation apparatus used in a video encoding system is provided. The motion estimation apparatus includes a first calculation module and a second calculation module. When a search position moves from a first candidate search position to a second candidate search position along a search path, the first calculation module estimates a first differential motion vector cost according to a search path information corresponding to the search path. The second calculation module selectively adds the first differential motion vector cost to an initial motion vector cost or subtracts the first differential motion vector cost from the initial motion vector cost according to a predetermined rule, so that a first motion vector cost corresponding to the second candidate search position is obtained.12-01-2011
20090274215IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND IMAGE PROCESSING PROGRAM - An image processing apparatus includes an inverse quantization section; an inverse orthogonal transform section; a motion-vector prediction section; a motion compensation section; a deblocking processing section; and a memory.11-05-2009
20110026596Method and System for Block-Based Motion Estimation for Motion-Compensated Frame Rate Conversion - Methods for coherent block-based motion estimation for motion-compensated frame rate conversion of decoded video sequences are provided. In some of the disclosed methods, motion vectors are estimated for each block in a decoded frame in both raster scan order and reverse raster scan order using prediction vectors from selected spatially and temporally neighboring blocks. Further, in some of the disclosed methods, a spatial coherence constraint that detects and removes motion vector crossings is applied to the motion vectors estimated for each block in a frame to reduce halo artifacts in the up-converted video sequence. In addition, in some of the disclosed methods, post processing is performed on estimated motion vectors to improve the coherence of the motion vectors. This post-processing includes application of vector median filters to the estimated motion vectors for a frame and/or application of a sub-block motion refinement to increase the density of the motion field.02-03-2011
20100150241VIDEO CODING - A video signal is coded using predictive coding. The degree of quantisation that is applied is varied as a function of measures of predictive power, the idea being that a picture that is useful as a predictor for other pictures is worth coding well. These measures are formed in a pre-analysis of the pictures to obtain, for each macroblock analysed, a measure that depends on its similarity to a region for which it is a potential predictor. Preferably these measures are cumulative.06-17-2010
20090285304VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.11-19-2009
20100226436SYSTEM AND METHOD TO PROCESS MOTION VECTORS OF VIDEO DATA - Systems and methods to process motion vectors of video data are disclosed. According to an embodiment, an intra-block in a video frame of the video data is identified. At least a first set and a second set of inter-blocks that neighbor the identified intra-block are identified, where each inter-block in a set of inter-blocks has a motion vector associated therewith. Data of the first and second set of inter-blocks is evaluated to determine an error associated with each of the first and second sets. A motion vector associated with motion vectors of the inter-blocks of the set with the least error is determined. The determined motion vector may be associated with the identified intra-block.09-09-2010
20090103621IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - Described herein is an image processing apparatus for calculating a motion vector between two screen images including a target screen image and a reference screen image, including: a base face motion vector calculation section; a high-accuracy base face motion vector calculation section; a reduction face motion vector calculation section; a high-accuracy reduction face motion vector calculation section; first and second base face search range determination sections; and a selection section configured to select a calculation section to be used from among the base face motion vector calculation section, high-accuracy base face motion vector calculation section, reduction face motion vector calculation section and high-accuracy reduction face motion vector calculation section and select whether the first or second base face search range determination section should be used and then select, where use of any of the determination sections is determined, a determination section to be used from between the determination sections.04-23-2009
20090103623IMAGE INFORMATION ENCODING METHOD AND ENCODER, AND IMAGE INFORMATION DECODING METHOD AND DECODER - In an image information encoder (04-23-2009
20090103620VIDEO ENCODING METHOD AND APPARATUS AND VIDEO DECODING METHOD AND APPARATUS - Provided are a video encoding method and apparatus and a video decoding method and apparatus in which a processing order for predetermined-size blocks included in a macroblock is defined in order to efficiently use spatial correlation in an image. After a macroblock is divided into first blocks of a predetermined size and motion compensation is performed on each of the first blocks, a second-block processing order for sequentially processing second blocks included in a current first block is determined in order to process a residue between a motion compensation value of the current first block and the current first block in units of the second blocks having a smaller size than that of the current first block.04-23-2009
20090103619METHOD OF CODING AND DECODING MULTIVIEW SEQUENCE AND METHOD OF DISPLAYING THEREOF - A method of coding/decoding a multiview sequence and display method thereof are disclosed, by which multiview sequence data can be efficiently coded and decoded. A multiview sequence coding method according to the present invention includes a step of generating a bit stream by encoding a plurality of pictures acquired from a plurality of views, wherein the bit stream includes view information for each of a plurality of the pictures and wherein the view information is information designating that the corresponding picture corresponds to which view among a plurality of the views. Accordingly, the multiview sequence is encoded to be selectively decoded for display.04-23-2009
20090103622METHOD AND SYSTEM FOR DETERMINING A MACROBLOCK PARTITION FOR DATA TRANSCODING - A system and corresponding method determines a macroblock partition to transcode digital data from a first video standard to a second video standard with any spatial resolution. The system includes a processing module and an encoding module. The processing module processes digital data to determine a macroblock partition. The encoding module is coupled to the processing module for encoding the digital data based on the macroblock partition. The system is further coupled to a decoding module for receiving the digital data. The method determines the partition of a macroblock for transcoding digital data with any spatial resolution and without any motion estimation.04-23-2009
20090257502RATE-DISTORTION DEFINED INTERPOLATION FOR VIDEO CODING BASED ON FIXED FILTER OR ADAPTIVE FILTER - This disclosure describes filtering techniques applied by an encoder and a decoder during the prediction stage of a video encoding and/or decoding process. The filtering techniques may enhance the accuracy of predictive data used during fractional interpolation, and may improve predictive data of integer blocks of pixels. There are several aspects to this disclosure, including a useful twelve-pixel filter support that may be used for interpolation, techniques that use coefficient symmetry and pixel symmetry to reduce the amount of data needed to be sent between an encoder and a decoder to configure the filter support for interpolation, and techniques for filtering data at integer pixel locations in a manner that is similar to sub-pixel interpolation. Other aspects of this disclosure concern techniques for encoding information in the bitstream to convey the type of filter used, and possibly the filter coefficients used. Predictive coding of filter coefficients is also described.10-15-2009
20090041125MOVING PICTURE CODING APPARATUS AND METHOD - A motion vector estimating device estimating a motion vector having high accuracy is provided. An eliminating unit eliminates each of pictures in a set of input pictures for each picture. A picture reducing unit reduces left pictures after the elimination, and generates reduced pictures. An overall motion vector estimating unit reads the reduced pictures, stored in the frame memory, as either reduced inputted pictures or reduced reference pictures, and estimates an overall motion vector between reduced pictures. Based on the overall motion vector estimated between the reduced pictures, a correction motion vector calculating unit calculates a motion vector between two reduced pictures as a correction motion vector. The correction motion vector calculating unit calculates the motion vector in the order of the inputted pictures in a pre-eliminated set of input pictures. A coding unit estimates the motion vector for each macroblock, using a determined search range, and performs cording processing.02-12-2009
20110188579Method, apparatus and system for rapid motion search applied in template switching - A method, an apparatus and a system for a rapid motion search applied in template matching are disclosed. The method includes: selecting motion vectors of blocks related to a current block as candidate motion vectors of the current block; after the uniqueness of a series of the candidate motion vectors of the current block is maintained, calculating the cost function of the candidate motion vectors in a corresponding template area of a reference frame, and obtaining the motion vector of the best matching template from the candidate motion vectors of the current block. In the embodiments of the present invention, there is no need to determine a large search range and no need to determine the corresponding search path template, and it is only necessary to perform a search in a smaller range.08-04-2011
20100266043DESIGN OF LOW POWER VIDEO COMPRESSION CHIPSET FOR PROTABLE APPLICATION - A data reading method for motion estimation in a video processing chipset is provided. The video processing chipset is coupled to an external memory device, wherein a first frame is stored in the external memory device. In the data reading method, a second frame is first divided into M×N sub frame sets, wherein each of the sub frame sets includes O×P sub frames. Then, each of the sub frame sets is selected in a calculation sequence, wherein the selected sub frame set is stored into an internal memory. Next, a predicted search path of each sub frame in the selected sub frame set is calculated. Thereafter, a predicted reading range is determined, wherein the predicted reading range includes the predicted search paths of the sub frames. Finally, a comparison data is read from the first frame according to the predicted reading range.10-21-2010
20110007815RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoder including: a memory to store a previously-decoded reference image; and a synthesizer to receive an encoded bitstream including information of I and P frames, and execute motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and the reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method. The bilinear interpolation is performed using rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame; wherein the rounding method information is one bit and specifies one of two values specifying a positive or negative rounding method. The rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007806SPATIAL PREDICTION METHOD AND APPARATUS IN LAYERED VIDEO CODING - A spatial prediction method for coding a residual image in layered video coding. The spatial prediction method includes selecting at least one of a default mode, a horizontal mode and a vertical mode as a spatial prediction mode, taking into account an activity of at least one adjacent block located adjacent to a first block among blocks included in the residual image; and coding differences between pixels of the first block and pixels of a prediction bock constructed by one of the selected at least one or more spatial prediction modes. The at least one adjacent block includes a first adjacent block located on the left of the first block and a second adjacent block located on the top of the first block.01-13-2011
20080240248METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING - A method and apparatus for encoding a skip macroblock by dividing the skip macroblock into smaller skip sub blocks and using predictive motion vectors predicted from motion vectors of blocks adjacent to the skip sub blocks, and a method and apparatus for decoding the skip macroblock is provided. Accordingly, by adding predetermined binary information indicating whether the skip macroblock is divided to the skip macroblock that generally transmits only prediction mode information, division of the skip macroblock can be adaptively applied, or all skip macroblocks can be divided into sub-blocks to be processed, so that pixel values in the skip macroblock can be predicted by using motion vectors of spatially adjacent blocks. Therefore, prediction efficiency increases.10-02-2008
20080310513HIGH-FIDELITY MOTION SUMMARISATION METHOD - Disclosed is a method (12-18-2008
20080310514Adaptive Density Search of Motion Estimation for Realtime Video Compression - A motion estimation (ME) apparatus and method for approximating motion in a macroblock of an image. The ME method includes selecting at least one search center in the macroblock; searching for an adaptive density lattice, wherein the adaptive density lattice search results in a motion vector for the at least one selected search center; performing skip box search to refine the resulting motion vector; selecting a partition size for the macroblock utilizing the refined motion vector, resulting in a motion vector candidate; and performing a sub-pel refinement for the motion vector candidates.12-18-2008
20100034271Method of and system for efficient macroblock partition searching using sub-macroblocks - A method, system and computer program product for motion search of a video frame is provided. Sub-macroblocks are used as basic unit for motion search. The comparison results are saved and the saved results can be used to compute best matches for larger partition sizes. A patterned search is also used so as to improve the performance of the motion search.02-11-2010
20100014588Speculative start point selection for motion estimation iterative search - A speculative start point selection for motion estimation iterative search improves the efficiency and quality of the integer-pel motion estimation iterative search by speculatively selecting the start position of the iteration. The start position is selected by comparing the Sum of Absolute Differences (SAD) value of a 0 motion vector, a predicted motion vector and a global motion vector (GMV) and selecting the position with the smallest SAD value. A refinement scheme with a threshold improves the efficiency and quality of the motion estimation iterative search by performing several comparisons to ensure the proper motion vector is selected. Applications of this improved motion estimation search include stabilizing an image as well as many other applications where motion vectors are used.01-21-2010
20100034285VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100034269Method of Predicting Motion and Texture Data - The invention relates to a method for generating for at least one block of pixels of a picture of a sequence of interlaced pictures at least one motion predictor and at least one texture predictor from motion data, respectively 02-11-2010
20100034275VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100027676VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20120189062MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding apparatus includes: a reference picture list management unit which assigns a reference picture index to each reference picture and creates reference picture lists together with display order and the like; a skip mode prediction direction determination unit which determines a prediction direction in a skip mode for a current block to be coded, using the reference picture lists; and an inter prediction control unit which compares a cost of a motion vector estimation mode, a cost of a direct mode, and a cost of the skip mode in which a prediction picture is generated using a predicted motion vector generated according to the prediction direction determined by the skip mode prediction direction determination unit, and determines a more efficient inter prediction mode among the three modes.07-26-2012
20120189061METHOD AND APPARATUS FOR EFFECTIVELY COMPRESSING MOTION VECTORS IN VIDEO CODER BASED ON MULTI-LAYER - A method and apparatus of improving the compression efficiency of a motion vector is provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.07-26-2012
20090213934Inter-Layer Prediction Method for Video Signal - The present invention relates to a method for conducting interlayer motion prediction in encoding or decoding of video signal. The present method sets motion information of an intra-mode macro block of a base layer with motion information of an inter-mode macro block that is vertically adjacent to the intra-mode macro block, derives motion information of a pair of macro blocks adjacent vertically each other from the two macro blocks, and uses the pair of macro blocks in inter-layer motion prediction.08-27-2009
20090180542PROCESS FOR DELIVERING A VIDEO STREAM OVER A WIRELESS BIDIRECTIONAL CHANNEL BETWEEN A VIDEO ENCODER AND A VIDEO DECODER - Process for delivering a video stream over a bidirectional wireless channel between a video encoder and a video decoder, wherein the video frames of the video stream are encoded by determining predictions (M) for defined partitions of the video frames, a prediction (M) being based on at least one reference area of a reference frame of the video stream; one motion vector associated to said reference area; and a weighting factor associated to said reference area; wherein the difference between partition and corresponding predicted partition (M) is done to establish a partition residual, the encoded video stream with partition residual are transmitted to the video decoder to decode predicted partition (M), decoded partition (A) of the video frame being formed by combination of decoded predicted partition and corresponding partition residual; and wherein a transmission error probability (P07-16-2009
20110261885METHOD AND SYSTEM FOR BANDWIDTH REDUCTION THROUGH INTEGRATION OF MOTION ESTIMATION AND MACROBLOCK ENCODING - Video data for a current frame and a plurality of reference frames may be loaded into a video codec in a video processing device from a memory used in the video processing device, and the loaded video data may be buffered in an internal buffer used during motion estimation. Motion estimation may be performed based on the loaded video data, and after completion of the motion estimation, macroblock encoding for the current frame may be performed based on the loaded video data and the motion estimation. The motion estimation may comprise coarse motion estimation and fine motion estimation, and motion vectors may be generated based on the motion estimation on per-macroblock basis. The encoding may comprise macroblock encoding of a residual for the current frame, which may be determined based on the original video data, accessed from the internal motion estimation buffer, and prediction determined based on the generated motion vectors.10-27-2011
20090245378VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-01-2009
20110194606MEMORY MANAGEMENT METHOD AND RELATED MEMORY APPARATUS - A memory management method includes fetching data corresponding to a plurality of image blocks, including at least two image blocks with different block sizes; and utilizing a memory device having a plurality of memory banks for storing the data corresponding to the plurality of image blocks. The memory management method and a related memory apparatus can make the memory device buffer motion blocks of variable sizes in an efficient way.08-11-2011
20110194612METHOD AND SYSTEM FOR INCREASING FRAME-DISPLAY RATE - Embodiments of the present invention provide an efficient and cost-effective implementation of a method and system for increasing the frame-display rate of a video display device. Video data is often input to a video-display device in a compressed form that includes encoded and compressed motion vectors. The motion vectors provide information about portions of successive video frames which change in relative position. The motion vectors are decompressed and decoded along with the frames. In certain embodiments of the present invention, a first frame and an accompanying motion-vector table are transmitted from a processing component to a timing-controller component of a video-display device, using which the timing-controller component can generate a second frame that is displayed following display of the first frame.08-11-2011
20100091861Method and apparatus for efficient image compression - The invention provides method and apparatus of video bit stream encoding. In non-intra type encoding, block pixel differences between a target block and the corresponding best match block is compared to other blocks' to determine whether a bit stream of a previously compressed block can be used to represent a target block. In Intra-coding, a target block is compared to other blocks to determine whether a bit stream of a previously compressed block can represent the target block. A variable length code is applied to represent the tables of coding the predetermined sub-band DC coefficients.04-15-2010
20080240243Method for estimating a motion vector - A method for estimating a motion vector is provided. The method is for estimating a motion vector for a current block with reference to a number of candidate blocks in a reference frame. The method includes the steps of: firstly, determine an error between the current block and each candidate blocks according to an error function. The error function combining a DC difference and a couple of AC differences between the current block and each candidate blocks. Then, determine the candidate block having the lowest error as a matching block of the current block. Next, determine the motion vector for the current block based on a displacement between the current block and the matching block.10-02-2008
20100091862High-Performance Block-Matching VLSI Architecture With Low Memory Bandwidth For Power-Efficient Multimedia Devices - A high-performance block-matching VLSI architecture with low memory bandwidth for power-efficient multimedia devices is disclosed. The architecture uses several current blocks with the same spatial address in different current frames to search the best matched blocks in the search window of the reference frame based on the best matching algorithm (BMA) to implement the process of motion estimation in video coding. The scheme of the architecture using several current blocks for one search window greatly increases data reuse, accelerates the process of motion estimation, and reduces the data bandwidth and the power consumption.04-15-2010
20100091871VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091873VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091874VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091875VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20110170604IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device and method whereby deterioration in compression efficiency can be suppressed without increasing computation amount while improving predictive accuracy.07-14-2011
20110170600IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND IMAGE PROCESSING PROGRAM - Disclosed herein is an image processing apparatus, including: a representative-point storing section; an evaluation-value table generation section; a peak detection section; and a correlation determination section, wherein an operation carried out by the evaluation-value table generation section to generate the evaluation-value table on the basis of representative points stored in the representative-point storing section, an operation carried out by the peak detection section to detect the candidate vector, an operation carried out by the correlation determination section to determine the correlation between the representative point and the referenced point as well as an operation carried out by the correlation determination section to update the representative-point storing section in accordance with a result of the operation to determine a correlation between the representative point and the referenced point are repeated as long as existence of a significant candidate vector is determined.07-14-2011
20090147855IMAGE CODING METHOD AND APPARATUS USING SIDE MATCHING PROCESS AND IMAGE DECODING METHOD AND APPARATUS FOR THE SAME - A method and apparatus for coding an image capable of performing a prediction coding process by using a correlation degree between neighboring pixels of a current block and neighboring pixels of a reference block, and an image decoding method and apparatus. In the method, reference block candidates having neighboring pixels similar to the neighboring pixels of the current block are selected, matching errors between selected reference block candidates and the current block are calculated, and a reference block candidate having the least matching error is determined to be a predicted block of the current block.06-11-2009
20100054338IMAGE DECODING APPARATUS, IMAGE DECODING PROGRAM, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE ENCODING PROGRAM, AND IMAGE ENCODING METHOD - An image decoding apparatus has a video data decoder for receiving and decoding encoded video data to acquire a plurality of reconstructed images; a subsidiary data decoder for receiving and decoding subsidiary data to acquire subsidiary motion information; and a resolution enhancer for generating motion vectors representing time-space correspondences between the plurality of reconstructed images, based on the subsidiary motion information acquired by the subsidiary data decoder, and for generating a high-resolution image with a spatial resolution higher than that of the plurality of reconstructed images, using the generated motion vectors and the plurality of reconstructed images acquired by the video data decoder.03-04-2010
20100027661Image Processing Method, Image Processing Program, Image Processing Device, and Imaging Device - An image-processing method is an image-processing method for detecting motion between plural images, including a searching operation of searching for a local motion vector from each of blocks in the plural images on the basis of feature quantity of the plural images, and a calculating operation of calculating evaluation values of the local motion vector found, in which one of the evaluation values is accuracy of position adjustment which is obtained when the search source block of said local motion vector is position-adjusted on a trial basis by using the local motion vector in order to provide an image-processing method, an image-processing program, an image-processing apparatus, and an imaging apparatus which can properly evaluate local motion vectors which are found by searching blocks of images upon detecting motion of plural images.02-04-2010
20090147853RESOURCE-ADAPTIVE VIDEO INTERPOLATION OR EXTRAPOLATION - A decoder may apply a resource-focused interpolation mode to enable or disable interpolation or extrapolation of video units, such as frames, based on power and quality considerations. In one mode, interpolation may be disabled to conserve power when reference frames are not likely to produce satisfactory quality. In another mode, the threshold may be adjustable as a function of power saving requirements. This disclosure also describes selection of reference video frames to be used for interpolation or extrapolation of a video frame. A decoder may apply a quality-focused mode to select a reference frame based on quality criteria. The quality criteria may indicate a level of quality likely to be produced by a reference frame. If no reference frames satisfy the quality criteria, interpolation or extrapolation may be disabled. Display of an interpolated or extrapolated frame may be selectively enabled based on a quality analysis of the frame.06-11-2009
20090147854SELECTIVE DISPLAY OF INTERPOLATED OR EXTRAPOLAED VIDEO UNITS - Display of an interpolated or extrapolated video unit, such as a video frame, may be selectively enabled based on a quality analysis. This disclosure also describes selection of reference video frames to be used for interpolation or extrapolation. A decoder may apply a quality-focused mode to select a reference frame based on quality criteria. The quality criteria may indicate a level of quality likely to be produced by a reference frame. If no reference frames satisfy the quality criteria, interpolation or extrapolation may be disabled. A decoder may apply a resource-focused frame interpolation mode to enable or disable frame interpolation or extrapolation for some frames based on power and quality considerations. In one mode, frame interpolation may be disabled to conserve power when reference frames are not likely to produce satisfactory quality. In another mode, the threshold may be adjustable as a function of power saving requirements of the decoder.06-11-2009
20090147851MOTION VECTOR FIELD PROJECTION DEALING WITH COVERING AND UNCOVERING - The method for high efficiency video signal compression comprises: a) calculating a first motion vector field (MvI) at a temporal location (t06-11-2009
20100208822VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-19-2010
20080240244VIDEO DECODING DEVICE AND VIDEO DECODING METHOD - A video decoding device includes: a decoder that decodes an encoded video bit stream to generate a prediction error signal; a motion compensator that performs a motion compensation prediction using a motion vector that refers at least one picture to generate a motion compensation prediction signal; a weighted predictor that generates a weighted prediction signal from a linear sum of (1) a product of the motion compensation prediction signal and a first weighting coefficient and (2) a second weighting coefficient; a selector that selects one of the motion compensation prediction signal and the weighted prediction signal; and an adder that adds (1) selected one of the weighted prediction signal and the motion compensation prediction signal and (2) the prediction error signal.10-02-2008
20110170606Video Processing Method and Apparatus with Residue Prediction - A video processing apparatus with residue prediction includes a motion estimation/compensation unit to determine a matching block of a reference video frame, obtain a motion vector of a current block of a current video frame that is related to the matching block, and acquire neighboring reconstructed pixels adjacent to the current block and corresponding pixels adjacent to the matching block with the motion vector alignment. Additionally, a pseudo-residue generating unit is included and constructs pseudo residues according to the neighboring reconstructed pixels and the corresponding pixels, an arithmetic unit is included and generates first-order residues by subtracting the matching block from the current block, and a residue-predicting unit is included and derives second-order residues and corresponding information according to the pseudo residues and the first-order residues. Moreover, a post-processing unit is included and derives a reconstructed current block according to the second-order residues and its corresponding information.07-14-2011
20100266046MOTION ENCODING AND DECODING - A method is provided for encoding a portion of a current image, including: an estimation of motion between the current image portion and a plurality of candidate image portions in order to form motion components, an evaluation of a performance criterion for each candidate image portion, and the selection of a reference image portion using said performance criteria. In the method, for at least one motion component, the motion estimation, the performance criteria evaluation and the reference image portion selection only use information considered to be available at the decoder and no motion information is inserted into an output flow intended for a decoder. A corresponding decoding method is also provided.10-21-2010
20090310682DYNAMIC IMAGE ENCODING METHOD AND DEVICE AND PROGRAM USING THE SAME - It is possible to provide a dynamic image encoding technique capable of performing high image quality encoding while eliminating formation of a vector field subjectively not desired. A dynamic image encoding device includes: inter-frame prediction means for inter-frame predicting an image in a block unit; motion vector calculation means for calculating a reference frame and a motion vector used for the inter-frame prediction of the block; prediction motion vector calculation means for calculating a prediction motion vector for prediction-encoding the motion vector of the block; skip mode motion vector calculation means for calculating a skip mode motion vector of a skip mode by using a context of a block spatially adjacent to the block; and skip mode validity judging means for judging whether the skip mode is valid as the encoding mode of the block. The skip mode validity judging means calculates a code amount of a differential motion vector of the motion vector estimated by considering the motion vector of the skip mode and the subjective image quality and uses a value of the code amount of the differential motion vector weighted by a block quantization parameter for the skip mode validity judgment.12-17-2009
20090028246MOVING-PICTURE CODING DEVICE AND MOVING-PICTURE CODING METHOD - A moving-picture coding device that divides a moving-picture signal comprised of a plurality of fields into a plurality of blocks and that can select coded area prediction in a current field and inter-field motion compensation prediction by block units, the moving-picture coding device comprises a forced intra block line determining unit, an intra selecting unit, a vector limit block line determining unit, a vector limit unit, a slice division unit a deblocking filter inhibit unit.01-29-2009
20090310679VIDEO PROCESSING APPARATUS AND METHODS - A video processing apparatus is provided for interpolating frames between two frames. The video processing apparatus includes a motion estimation unit, a region detector and a motion compensation unit. The motion estimation unit receives the two frames and provides motion vector information of the two frames. The region detector generates boundary information associated with image boundaries of the two frames, determines a specific region in the two frames according to the boundary information and generates region information according to the determination result. The motion compensation unit generates an interpolated frame between the two frames in accordance with the region information and the motion vector information.12-17-2009
20100118970TEMPORAL ERROR CONCEALMENT FOR VIDEO COMMUNICATIONS - Methods and systems for processing video data are described. A set of candidate motion vectors is selected from motion vectors associated with macroblocks in a first frame of video data and from motion vectors associated with macroblocks in a second frame of the video data. A statistical measure of the set is determined. The statistical measure defines a motion vector for a macroblock of interest in the second frame.05-13-2010
20100124278Motion Compensation in Video Coding - A video coding system includes a decoder configured to decode an encoded reference picture, a primary memory, and a secondary memory configured to store the decoded reference picture. The video coding system also includes a logic device configured to extract motion vectors for generating a predicted picture of the reference picture and to store the extracted motion vectors in memory bins. The reference picture includes a plurality of predefined regions and each memory bin stores motion vectors for a particular region of the plurality of predefined regions. For each of the plurality of predefined regions of the reference picture, the logic device is configured to use the memory bin corresponding to a reference region to read the reference region from the secondary memory and write the reference region into the primary memory. The written reference region and the motion vectors of the corresponding memory bin are used to spatially translate the written reference region into the predicted picture.05-20-2010
20100124283VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-20-2010
20100124281VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-20-2010
20100124279VIDEO RATE CONTROL PROCESSOR FOR A VIDEO ENCODING PROCESS - A system for executing video encoding operations. The system includes a video encoder for encoding an incoming video stream into a plurality of macro blocks. A motion estimation engine is coupled to the video encoder for controlling the encoding of the macro blocks. A video rate control processor is coupled to the video encoder and coupled to the motion estimation engine. The video rate control processor receives a plurality of parameters from the video encoder that indicate an encoding complexity for a macro block and a video frame of the video stream and, upon receiving an indication from the motion estimation engine, computes a quantization parameter for the macro block. The quantization parameter is dynamically adjusted for the video stream to achieve a target bit rate.05-20-2010
20100296581METHOD AND SYSTEM FOR GENERATING BLOCK MODE CONVERSION TABLE FOR EFFICIENT VIDEO TRANSCODING - A method and system for generation of a block mode conversion table for use in online transcoding of a sequence of input images in a first format to a sequence of output images in a second format are described. The table is based on a sequence of training images and provides an effective mapping between the encoding block modes and respective candidate transcoding block modes used during the online transcoding. The method utilizes the encoding block mode, the motion vectors and the residual information extracted during the decoding of the training image to generate the block mode conversion table. A corresponding system is also provided.11-25-2010
20080260035Motion vector coding and decoding methods - A motion vector coding method and apparatus that improves efficiency of coding motion vectors when a current block is coded using a plurality of motion vectors. The apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of the following processes: (A) the motion vectors which refer to the same picture are selected from among the motion vectors for the neighboring blocks so as to generate the predicted vector; (B) the motion vectors for the respective neighboring blocks are ordered in the predetermined order, and the motion vectors of the same order rank are selected from the ordered motion vectors so as to generate the predicted vector; and (C) the predicted vector for the second motion vector of the current block shall be the first motion vector, and if the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled according to the temporal distance between the pictures so as to generate the predicted vector.10-23-2008
20080247467Adaptive interpolation filters for video coding - In digital video image encoding and decoding, a filter type is selected based on symmetrical properties of the images and coefficient values of an interpolation filter are calculated based on the selected filter type. Coefficient values, filter tap-length and selected filter-type are provided in the encoded video data. Coefficient values are also calculated based on a prediction signal representative of the different between a video frame and a reference image. The prediction signal is calculated from the reference image based on a predefined base filter and motion estimation performed on the video frame. The predefined base filter has fixed coefficient values. Coefficient values are selected from interpolation of pixel values in a selected image segment in the video frame. Symmetry properties of images can be a vertical symmetry, a horizontal symmetry and a combination thereof, so that only a portion of the filter coefficients are coded.10-09-2008
20100128789METHOD AND APPARATUS FOR PROCESSING VIDEO SEQUENCES - A method for processing a video sequence having a plurality of frames includes the steps of: extracting features from each of the frames, determining correspondences between the extracted features from two of the frames, estimating motion in the video sequence based on the determined correspondences, generating a background mosaic for the video sequence based on the estimated motion, and performing foreground-background segmentation on each of the frames based on the background mosaic.05-27-2010
20100086053MOTION ESTIMATION DEVICE, MOTION ESTIMATION METHOD, AND MOTION ESTIMATION PROGRAM - A motion estimation device executes motion estimation for a macroblock in a current picture, using pixel data of a reference picture in a multi-frame memory (04-08-2010
20100284465METHOD FOR COMPRESSING DATA IN A VIDEO SEQUENCE - A method for compressing data in a video sequence, a system for carrying out the method, a computer program, and a computer program product are provided. In the described method, results of a motion estimation for a previous temporal decomposition stage are also used for motion compensation.11-11-2010
20100329343MOTION VECTOR CALIBRATION CIRCUIT, IMAGE GENERATING APPARATUS AND METHOD THEREOF - A motion vector calibration circuit includes a select circuit, a local minimum detection circuit, a sine wave detection circuit, a threshold value detection circuit and a decision circuit. Correct motion vectors are passed using a recursive method, thereby achieving high accuracy and reducing computational volume.12-30-2010
20100118968VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-13-2010
20100118967VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-13-2010
20100118966VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-13-2010
20100118965VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-13-2010
20090296816Method and System for Using Motion Vector Confidence to Determine a Fine Motion Estimation Patch Priority List for a Scalable Coder - Methods and systems for using motion vector confidence to determine a FME patch priority list for a scalable coder are disclosed, and may include a fine motion estimator receiving a plurality of coarse motion vectors and corresponding confidences. A patch list may be generated based on the corresponding confidences of the coarse motion vectors. The patch list may then be used to determine a search area. Each video block in a present picture may be matched to the video blocks in the search area to find the best match. A fine motion vector may be determined for each video block in the present picture with respect to a video block in the search area.12-03-2009
20120033736IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device and method which enable encoding efficiency in intra prediction to be improved.02-09-2012
20110261887METHODS AND DEVICES FOR ESTIMATING MOTION IN A PLURALITY OF FRAMES - In various embodiments, a method for estimating motion in a plurality of frames is provided, the method including determining a first set of motion vectors with respect to a first frame and a second frame, the second frame being in succession with the first frame along a time direction, determining a second set of motion vectors with respect to a predicted frame and the second frame, the predicted frame being in succession with the first frame along the time direction; wherein some motion vectors of the second set of motion vectors are interpolated from motion vectors of the first set of motion vectors; and determining a third set of motion vectors based on the first set of motion vectors and the second set of motion vectors.10-27-2011
20090207915SCALABLE MOTION SEARCH RANGES IN MULTIPLE RESOLUTION MOTION ESTIMATION FOR VIDEO COMPRESSION - A method of performing motion search for video including providing at least one motion search offset range for multiple search range scale levels and resolution levels, monitoring at least one operating metric, selecting a search range scale level, and performing motion search for selected resolution levels using search windows determined by the offset ranges at the selected search range scale level. A video encoder including a memory for storing motion search offset ranges for multiple resolution levels and multiple levels of a search range scale, and control logic for controlling motion estimation. The control logic monitors at least one operating metric, selects a search range scale level, and controls motion search at selected resolution levels using search windows determined by the offset ranges at the selected search range scale level. The offset range and resolution levels may be modified based on the operating metrics and/or motion search comparison metrics.08-20-2009
20100086056VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-08-2010
20100086052METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL - A method of processing a video signal is disclosed. The present invention includes obtaining a current macroblock type, obtaining skip or direct mode indication information on a partition of the current macroblock according to the current macroblock type, deriving a motion vector of the partition according to the skip or direct mode indication information, and predicting a pixel value of the partition using the motion vector. Accordingly, the present invention obtains a pixel value of a reference block close to an original video using a motion vector, thereby enhancing a reconstruction ratio of the macroblock. As a macroblock uses skip or direct prediction indication information, it is unnecessary to separately code skip mode indication information and direct mode indication information on the macroblock, whereby an information size to be coded can be reduced.04-08-2010
20100086051METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL - A method of processing a video signal is disclosed. The present invention includes determining whether a partition of a current macroblock according to a current macroblock type is coded in a skip mode, deriving a motion vector of the partition if the partition of the current macroblock is coded in the skip mode, and predicting a pixel value of the partition based on the derived motion vector. Accordingly, the present invention obtains a pixel value of a reference block close to an original video using a motion vector by deriving the motion vector by a block unit smaller than a size of the macroblock, thereby enhancing a reconstruction ratio of the macroblock.04-08-2010
20100086048System and Method for Video Image Processing - A system for processing video imaging information, corresponding electronic device, and method of processing video imaging information, are disclosed. In at least one embodiment, the electronic device includes a coder capable of compressing the imaging information for transmission via a communications channel, the video imaging information pertaining to a plurality of video source frames including a current source frame. The coder includes means for performing a super-resolution operation in relation to previous frame information representative of at least one of the video source frames occurring prior to the current source frame, the super-resolution operation being performed prior to at least some of the video imaging information corresponding to the current source frame being coded or decoded.04-08-2010
20090245380VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-01-2009
20090245379VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-01-2009
20090245377VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-01-2009
20090086821IMAGE PROCESSING APPARATUS AND METHOD THEREOF - A frame image of decoded image data in which an image stream generated by performing an orthogonal transformation and a lossy compression coding has been decoded is inputted so as to be stored in a frame memory for each block, and based on the stored frame image and a newly input frame image, a motion vector for each block is detected, and a motion vector variance map generator calculates a variance value map by calculating a variance value of the motion vectors. Based on the variance value map and a threshold, an outline domain included in the frame image is extracted, and a band limiting filter performs band limitation for each block in regard to the outline domain so as to accomplish removal of noise from the decoded image.04-02-2009
20100080300VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-01-2010
20100080296LOCATING MOTION VECTORS FOR VIDEO DATA UNITS - An apparatus performs efficient coding techniques to more efficiently locate motion vector data within neighboring video data units. The apparatus comprises a motion vector (MV) location unit that includes a look-up table (LUT), where the MV location unit obtains video data defining a plurality of video data units and processes the plurality of video data units. The apparatus further includes a geometric resolution unit that determines, while processing a current one of the plurality of video data units, which of the plurality of video data units neighbor the current video data unit. The MV location unit then accesses, for each of the neighboring video data units, the LUT to determine a location of a motion vector within a section of the video data to which the neighboring video data unit is associated.04-01-2010
20100080295METHOD AND APPARATUS FOR SCALABLE MOTION ESTIMATION - Embodiments of the invention generally provide a method and apparatus for scalable motion estimation. One embodiment of a method for performing motion estimation includes setting a target complexity for a macroblock of a source frame and performing motion estimation for one or more partitions of the macroblock until the target complexity is met.04-01-2010
20100080297TECHNIQUES TO PERFORM FAST MOTION ESTIMATION - Techniques to perform fast motion estimation are described. An apparatus may comprise a motion estimator operative to receive as input a current frame and a reference frame from a digital video sequence. The motion estimator may generate and output a motion vector. The motion vector may represent a change in position between a current block of the current frame and a matching reference block of the reference frame. The motion estimator may utilize an enhanced block matching technique to perform block matching based on stationary and spatially proximate blocks. Other embodiments are described and claimed.04-01-2010
20100080301VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-01-2010
20090290642IMAGE CODING APPARATUS AND METHOD - The image coding apparatus comprises: a decoding unit 11-26-2009
20090185622METHOD OF SEARCHING FOR MOTION VECTOR, METHOD OF GENERATING FRAME INTERPOLATION IMAGE AND DISPLAY SYSTEM - A motion vector detection method comprises extracting a first block including a plurality of pixels from a first frame of the image, detecting a second block from a plurality of blocks of a second frame of the image by block matching, the second block including the maximum number of pixels each indicating an absolute difference value not more than a first threshold with respect to each of the pixels of the first block, and computing a first motion vector between the first block and the second block.07-23-2009
20090175348LIFTING-BASED IMPLEMENTATIONS OF ORTHONORMAL SPATIO-TEMPORAL TRANSFORMATIONS - A method and apparatus for encoding video frames is described. In one embodiment, an encoding method includes jointly transforming a set of pixels into high-pass data using an orthonormal transform. The set of pixels includes at least one reference pixel and predicted pixels. The method further includes generating low-pass data using the reference pixel and the high-pass data.07-09-2009
20110200113METHOD AND APPARATUS FOR GENERATING A REFERENCE FRAME AND METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING THE SAME - An apparatus for generating a reference frame is disclosed including: an interpolation unit for interpolating a reference frame per fractional pixel; a virtual encoder for determining a block mode of a current frame and a motion vector according to the block mode by using an interpolated reference frame; an offset calculator for calculating an offset for each pixel of the interpolated reference frame by using the block mode and the motion vector; and an offset adder for generating an offset interpolated reference frame by adding the offset for each pixel to each pixel of the interpolated reference frame. By adding the offset calculated according to the block mode to the reference frame for the inter prediction and making the reference frame to be used for the motion estimation and compensation similar to the current frame to be encoded, motion prediction is accurate and compression efficiency is improved.08-18-2011
20110200111ENCODING MOTION VECTORS FOR GEOMETRIC MOTION PARTITIONING - In one example, an apparatus includes a video encoder configured to partition a block of video data into a first partition and a second partition using a geometric motion partition line, determine a first motion vector for the first partition and a second motion vector for the second partition, encode the first motion vector based on a first motion predictor selected from motion vectors for blocks neighboring the first partition, encode the second motion vector based on a second motion predictor selected from motion vectors for blocks neighboring the second partition, wherein the blocks neighboring the second partition are determined independently of the blocks neighboring the first partition, and output the encoded first and second motion vectors. A video decoder may similarly decode the motion vectors based on determining the first and second motion predictors for the first and second partitions.08-18-2011
20110200110SMOOTHING OVERLAPPED REGIONS RESULTING FROM GEOMETRIC MOTION PARTITIONING - In one example, an apparatus includes a video encoder configured to partition a block of video data into a first partition and a second partition using a geometric motion partition line, calculate a prediction value of a pixel in a transition region of the block using a filter that applies a value for at least one neighboring pixel from the first partition and a value for at least one neighboring pixel from the second partition, calculate a residual value of the pixel in the transition region of the block based on the prediction value of the pixel in the transition region, and output the residual value of the pixel. In one example, a video decoder may use a similar filter to decode an the encoded block after receiving the residual value for the encoded block, and using a definition of the geometric motion partition line.08-18-2011
20110200109FIXED POINT IMPLEMENTATION FOR GEOMETRIC MOTION PARTITIONING - In one example, an apparatus includes a video encoder configured to partition a block of video data into a first partition and a second partition using a geometric motion partition line, calculate a slope value and a y-intercept value of the geometric motion partition line, wherein the slope value and the y-intercept value comprise integer values, calculate a mask indicative of pixels of the block in the first partition and pixels of the block in the second partition, encode the first partition and the second partition based on the mask, and output the encoded first partition, the encoded second partition, the slope value, and the y-intercept value. This may allow for a fixed point implementation. A video decoder may receive the slope and y-intercept values to calculate the mask and decode the block based on the mask.08-18-2011
20110200108CHROMINANCE HIGH PRECISION MOTION FILTERING FOR MOTION INTERPOLATION - A video coding unit may be configured to encode or decode chrominance blocks of video data by reusing motion vectors for corresponding luminance blocks. A motion vector may have greater precision for chrominance blocks than luminance blocks, due to downsampling of chrominance blocks relative to corresponding luminance blocks. The video coding unit may interpolate values for a reference chrominance block by selecting interpolation filters based on the position of the pixel position pointed to by the motion vector. For example, a luminance motion vector may have one-quarter-pixel precision and a chrominance motion vector may have one-eighth-pixel precision. There may be interpolation filters associated with the quarter-pixel precisions. The video coding unit may use interpolation filters either corresponding to the pixel position or neighboring pixel positions to interpolate a value for the pixel position pointed to by the motion vector.08-18-2011
20120106647PREDICTION OF A MOVEMENT VECTOR OF A CURRENT IMAGE PARTITION HAVING A DIFFERENT GEOMETRIC SHAPE OR SIZE FROM THAT OF AT LEAST ONE ADJACENT REFERENCE IMAGE PARTITION AND ENCODING AND DECODING USING ONE SUCH PREDICTION - The invention relates to a method for predicting a movement vector (MVp05-03-2012
20120106646METHOD FOR ENCODING AND DECODING IMAGES, ENCODING AND DECODING DEVICES, CORRESPONDING DATA STREAMS AND COMPUTER PROGRAM - A method and apparatus are provided for encoding an image sequence. The method includes the following steps, for at least one group of blocks of an image: determining, for each block, at least one parameter characteristic of said block; forming at least one cluster including the blocks having at least one similar characteristic parameter; encoding the blocks of said cluster, the similar characteristic parameter(s) associated with said cluster being encoded only once; encoding the blocks that do not belong to any cluster, the characteristic parameter(s) associated with each of said blocks not being encoded; generating a data stream; and inserting into said stream, at least one piece of information on the partitioning of the group(s), in order to identify the outer block(s) within a group.05-03-2012
20120106645METHOD, APPARATUS AND DEVICE FOR OBTAINING MOTION INFORMATION OF VIDEO IMAGES AND TEMPLATE - A method is provided. The method includes: determining one or more first candidate reference blocks that correspond to a current block in a first reference frame according to known motion information related to the current block; determining one or more second candidate reference blocks in a second reference frame; calculating a sum of differences between pixels of each of the one or more first candidate reference blocks and pixels of a second candidate reference block that is of the one or more second candidate reference blocks and that corresponds to the first candidate reference block; selecting a first candidate reference block and a second candidate reference block with a minimum sum of differences as a first reference block and a second reference block of the current block; and obtaining motion information of the current block according to motion information determined by the first reference block and the second reference block.05-03-2012
20120106644REFERENCE FRAME FOR VIDEO ENCODING AND DECODING - A method for encoding is adapted to process a digital video signal composed of video frames into a bitstream. Each frame is divided into blocks and at least one block of a current frame is encoded by motion compensation using a block of a reference frame. The method comprises computing a difference frame between a current frame and a reference frame of said current frame, and selecting a subset of data representative of the difference frame computed. The subset of data selected is further encoded to obtain an encoded difference frame. Next, the encoded difference frame is decoded and the decoded difference frame is added to the reference frame to obtain an improved reference frame. Subsequently, the improved reference frame is used for motion compensation encoding of said current frame.05-03-2012
20120106643IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING SYSTEM - Disclosed herein is an image processing device including: a generating section, a plurality of pieces of stream data with different display sizes being created in advance for each of a plurality of video contents, configured to generate stream data of one stream of a multiple video reproduced image for simultaneously displaying not smaller than two video contents selected from the plurality of video contents by performing parameter transcoding using the stream data created in advance.05-03-2012
20120106642Motion Estimation for a Video Transcoder - A video transcoder for converting an encoded input video bit-stream having one spatial resolution into an encoded output video bit-stream having a lower spatial resolution, wherein motion-vector dispersion observed at the higher spatial resolution is quantified and used to configure the motion-vector search at the lower spatial resolution. For example, for video-frame areas characterized by relatively low motion-vector dispersion values, the motion-vector search may be performed over a relatively small vector space and with the use of fewer search patterns and/or hierarchical search levels. These constraints enable the transcoder to find appropriate motion vectors for inter-prediction coding without having to perform an exhaustive motion-vector search for these video-frame areas, which advantageously reduces the computational complexity and processor load compared to those of a comparably performing prior-art video transcoder.05-03-2012
20120106641Method for predicting a block of image data, decoding and coding devices implementing said method - A method for predicting a current block belonging to a current image with a view to the coding or the reconstruction of the current block is described. The method comprises the following steps: 05-03-2012
20120106640Decoding side intra-prediction derivation for video coding - Decoding side intra-prediction derivation for video coding. Just decoded pixels within a given picture (image) (e.g., such as a given picture (image) within video data) are employed for decoding other pixels within that very same picture (image) using prediction vectors extending from the just decoded pixels to the pixels currently being decoded. In one instance, this intra-prediction operation in accordance with video or image processing can also operate using relatively limited information provided from the device that provides or transmits the video data to the device in which it undergoes processing. Coarse and/or refined direction information corresponding to these prediction vectors may be provided from the device that provides or transmits the video data to the device in which it undergoes processing.05-03-2012
20120106639MOTION-COMPENSATED TEMPORAL FILTERING BASED ON VARIABLE FILTER PARAMETERS - Systems and devices for, and methods of, motion-compensated temporal filtering based on variable filter parameters. A method embodiment includes (a) determining, by a processor having memory, a pixel-related residue image based on a set of differences between a current pixel intensity of a current frame and a corresponding pixel intensity of a previous frame, wherein the corresponding pixel intensity is augmented by a motion-compensated vector of the previous frame; (b) determining an intensity weight based on the determined pixel-related residue image and a temporal filtering parameter; and (c) filtering the pixel intensity of the current frame based on the determined intensity weight and the motion compensated vector of the previous frame.05-03-2012
20120106638Decoder-Side Motion Derivation with Motion Vector Predictors - Systems and devices for, and methods of, decoder-side motion derivation with motion vector predictors. A method embodiment includes (a) determining a starting motion vector predictor by a processor having addressable memory, where the memory comprises a set of two or more motion vector predictors; and where the determining of the starting motion vector predictor is based on a received index and the set of two or more motion vector predictors; (b) and determining a motion-compensated predictor based on the determined starting motion vector predictor, a cost function, and a search region.05-03-2012
20090168889INTER-FRAME PREDICTED IMAGE SYNTHESIZING METHOD - A method and apparatus for simplifying an operation for the processing of a warping prediction of dividing an image into patches and deforming each patch by affine transform or bilinear transform. Motion vectors of a plurality of representative points in which a spatial interval has a special feature are obtained from at least one patch formed with a plurality of grid points. Information of the motion vectors are used for synthesis of a predicted image. The division for synthesizing a predicted image in the case of warping prediction is replaced with a shift operation, thereby simplifying the processing by a computer or exclusive hardware.07-02-2009
20090168883CONFIGURABLE PERFORMANCE MOTION ESTIMATION FOR VIDEO ENCODING - A motion estimation engine may be implemented to include a skip checking module, an integer search module, a macroblock partitioning module, a fractional search module, a bidirectional motion estimation refinement module, and an intra search module. The motion estimation engine may perform fractional search/bidirectional motion estimation refinement and intra search in parallel. Additionally, modules in the motion estimation engine may be partially or fully turned on or off to accommodate different motion estimation requirements. Furthermore, the motion estimation engine may implement early exit strategy to further save computation.07-02-2009
20090262818VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090274217METHODS AND APPARATUS FOR DECODING AND DISPLAYING DIFFERENT RESOLUTION VIDEO SIGNALS - Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.11-05-2009
20090274214METHOD FOR PROVIDING AND USING INFORMATION ABOUT INTER-LAYER PREDICTION FOR VIDEO SIGNAL - Disclosed is a method for providing and using information about inter-layer prediction when providing a video signal to a plurality of layers by encoding the video signal. The method for encoding an image signal to bit streams of an enhanced layer and a base layer, includes the steps of coding an image block in a picture of the enhanced layer into residual data based on image data of a block of the base layer corresponding to the vide block, and providing indication information through the bit stream of the enhanced layer, the indication information representing whether the coding is achieved in inter-layer prediction constraint or inter-layer prediction unconstraint.11-05-2009
20110268192MOVING IMAGE DECODING DEVICE, MOVING IMAGE DECODING METHOD, AND PROGRAM - There are provided an analysis unit that analyzes an input bit stream to output first intermediate data and analysis information, a conversion rule storage unit that stores a conversion rule, according to which an error-detected bit stream included in the analysis information output from the analysis unit or a bit stream including reference information to an image used for a method not supported by a decoding unit is converted into a bit stream decodable by the decoding unit, and a conversion unit that converts the analysis information into second intermediate data according to the conversion rule, as well as the decoding unit that decodes the first intermediate data and the second intermediate data output from the analysis unit and the conversion unit. Thus, even when the decoding unit does not cope with specific information included in the analysis information, the decoding unit is able to stably perform a decoding procedure.11-03-2011
20090201992METHOD AND APPARATUS FOR ENCODING AND DECODING HOPPING DEFAULT VIEW FOR MULTIPLE CAMERAS SYSTEM - Provided is a multiple camera system, and more particularly, a method and apparatus for processing hopping default views in an apparatus for encoding/decoding video streams of multiple view positions. The encoding apparatus for the multiple camera system includes an encoder for receiving video signals of multiple view positions, and encoding the video signals based on a predetermined default Group of Pictures (GoP); a default GoP selector for providing the default GoP information to the encoder; and a multiplexer for multiplexing the encoded video signals and sequentially outputting only the default GoP.08-13-2009
20110170605IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The present invention relates to an image processing apparatus and an image processing method capable of preventing an increase in the amount of computation. An L1 search center computing unit 07-14-2011
20110170602METHOD AND APPARATUS FOR ENCODING AND DECODING MOTION VECTOR - Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding a motion vector includes: selecting a mode from among a first mode in which information indicating a motion vector predictor of at least one motion vector predictor is encoded and a second mode in which information indicating generation of a motion vector predictor based on pixels included in a previously encoded area adjacent to a current block is encoded; determining a motion vector predictor of the current block according to the selected mode and encoding information about the motion vector predictor of the current block; and encoding a difference vector between a motion vector of the current block and the motion vector predictor of the current block.07-14-2011
20110170601METHOD FOR ENCODING/DECODING MOTION VECTOR AND APPARATUS THEREOF - A method for encoding/decoding a motion vector and an apparatus thereof are disclosed. The method includes defining a candidate motion vector set with respect to a current motion vector; selecting a predicted motion vector from the candidate motion vector set; determining a predictability of the predicted motion vector in a decoding apparatus; encoding the current motion vector by using a motion vector prediction mode for indicating the predicted motion vector and the predictability, if the predictability is determined positive; and encoding the current motion vector by using a motion vector prediction mode for indicating a default predicted motion vector and an unpredictability, if the predictability is determined negative. According to the disclosure, it becomes unnecessary to directly notify of the predicted motion vector of the current motion vector to the decoding apparatus, and instead a predetermined shared function is provided to inform of or search the predicted motion vector.07-14-2011
20110170599METHOD OF CODING, DECODING, CODER AND DECODER - A method for coding a picture portion of a picture of a video sequence is disclosed, at least one picture of the video sequence being a key picture. The method comprises the following steps: 07-14-2011
20110170598METHOD AND DEVICE FOR VIDEO ENCODING USING PREDICTED RESIDUALS - An encoder for encoding a video by performing motion estimation using predicted residuals in the rate-distortion cost expression. The predicted residuals are determined by finding a predicted motion vector with respect to the original reference frame and calculating the corresponding residual values. The actual motion vector is then selected based on minimization of the rate-distortion cost expression with respect to the reconstructed reference frame, where the rate-distortion cost expression includes the predicted residuals. In particular, the cost expression includes reconstructed predicted residuals within the distortion term.07-14-2011
20110170597METHOD AND DEVICE FOR MOTION VECTOR ESTIMATION IN VIDEO TRANSCODING USING FULL-RESOLUTION RESIDUALS - A transcoder and method of transcoding in which inter-prediction frames of a downsampled video are encoded using downsampled full-resolution residuals in the rate-distortion analysis used to locate a motion vector for a given partition in the downsampled video.07-14-2011
20110170596METHOD AND DEVICE FOR MOTION VECTOR ESTIMATION IN VIDEO TRANSCODING USING UNION OF SEARCH AREAS - A transcoder and methods of encoding inter-prediction frames of a downsampled video wherein the downsampled video is a spatially downsampled version of a full-resolution video. Full-resolution motion vectors are downscaled and each downscaled motion vector pinpoints a search area within a reference frame. The union or combination of search areas defines the search field for candidate motion vectors. A motion vector is selected from the candidates based on realizing a minimum rate-distortion cost.07-14-2011
20110170595METHOD AND DEVICE FOR MOTION VECTOR PREDICTION IN VIDEO TRANSCODING USING FULL RESOLUTION RESIDUALS - A transcoder and methods of encoding inter-prediction frames of a downsampled video wherein the downsampled video is a spatially downsampled version of a full-resolution video. Full-resolution motion vectors are downscaled and a weighting factor is calculated for each downscaled motion vector based upon the transform domain residual coefficients associated with that full-resolution motion vector. A motion vector prediction is made based on the weighted average using the downscaled motion vectors and their weighting factors.07-14-2011
20090279610Method and apparatus for encoding/decoding with interlace scanning based motion vector transformation - An interlace scanning image encoding or decoding method. The interlace scanning image encoding method includes estimating motion of a present field corresponding to a portion of a present image based on a main reference field and calculating a motion vector of the main reference field, selecting a subsidiary reference field related to the main reference field, deriving a motion vector of the subsidiary reference field from the motion vector of the main reference field, generating a prediction field of the present field using any one of the motion vector of the main reference field and the motion vector of the subsidiary reference field, and encoding a residual field between the present field and the prediction field.11-12-2009
20090262834VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262833VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262832VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262831VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262830VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262828VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262827VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262822VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262821VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262819VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262817VIDEO DECODING APPARATUS AND METHOD - A video decoding apparatus and method capable of performing high-speed reproduction of image data subjected to coding with a prescribed coding scheme for adaptively performing field-structured or frame-structured coding, with a simple configuration. In a high-speed reproduction mode, a decoding process is applied to only coded image data of intra-frame coded pictures subjected to the frame-structured coding or of one field in the intra-frame coded pictures and coded image data of intra-field coded pictures subjected to the field-structured coding.10-22-2009
20090262816VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090285300METHOD AND APPARATUS FOR ENCODING AND DECODING AN IMAGE USING A REFERENCE PICTURE - A method and apparatus for encoding and decoding an image by performing motion prediction and compensation on pictures in a group of pictures by selectively using a high-quality key picture that is previously encoded and restored, and a second picture that is previously encoded and restored. The method of encoding an image improves the prediction efficiency of an image by storing a key picture, which is encoded and restored to a high quality by reducing a loss caused by a quantization error using a small quantization coefficient, in a first storage unit and storing a previously encoded and restored second picture in a second storage unit, and then performing motion prediction and compensation by selectively using the key picture stored in the first storage unit and the second picture stored in the second storage unit while encoding a next picture in a group of pictures.11-19-2009
20090110075Method and System for Motion Compensated Picture Rate Up-Conversion of Digital Video Using Picture Boundary Processing - Certain aspects of a method and system for motion-compensated picture rate up-conversion (PRUC) of digital video using picture boundary processing may include generating one or more forward motion vectors and one or more backward motion vectors based on extracted picture rate up-conversion (PRUC) data. A cost of performing motion estimation of a particular block along the generated forward motion vectors and the generated backward motion vectors corresponding to the particular block may be calculated. The particular block may be a boundary block. A motion vector with the least cost may be selected and motion compensated to generate a plurality of interpolated pictures.04-30-2009
20090279609MOTION-COMPENSATED PROCESSING OF IMAGE SIGNALS - In a motion-compensated processing of images, input images are down-scaled (scl) to obtain down-scaled images, the down-scaled images are subjected to motion-compensated processing (ME UPC) to obtain motion-compensated images, the motion-compensated images are up-scaled (sc11-12-2009
20090279608Method and Apparatus for Decoding/Encoding a Video Signal - The present invention provides a video signal decoding method including the steps of checking whether to perform luminance compensation of a current block, performing the luminance compensation on the current block, and performing motion compensation by considering the luminance compensation, wherein a prediction value for the luminance compensation is obtained from a neighbor block neighbor to the current block.11-12-2009
20090285303MOTION ESTIMATION FOR VIDEO PROCESSING USING 2-D (SPATIAL) CONVOLUTION - A device including a two-dimensional convolution unit to perform spatial image filtering. A reference frame mirroring unit is connected to the two-dimensional convolution unit. A mean square error (MSE) decision unit is connected to the two-dimensional convolution unit to perform motion estimation by selecting the displacement that minimizes MSE.11-19-2009
20090285305VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.11-19-2009
20090285301IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus includes: a local motion vector detection section; a global motion calculation section; a global motion vector calculation section; and an evaluation section.11-19-2009
20100278270VIDEO ENCODING/ DECODING METHOD AND APPARATUS FOR MOTION COMPENSATION PREDICTION - A video encoding method and apparatus to select one combination, for each block of an input video signal, from a plurality of combinations. Each combination includes a predictive parameter and at least one reference picture number determined in advance for the reference picture. A prediction picture signal is generated in accordance with the reference picture number and predictive parameter of the selected combination. A predictive error signal is generated representing an error between the input video signal and the prediction picture signal. Encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination is included.11-04-2010
20120294365IMAGE AND VIDEO ENCODING AND DECODING - A method and system for image and video encoding and decoding is disclosed. A plurality of macro-blocks of pixels are defined in the image to be encoded, for subsequent block-by-block encoding and decoding. A node-cell structure of pixels is individually defined for each macro-block. The node pixels are encoded first. Then, the cell pixels are encoded using the decoded node pixels as a reference. This allows increasing macro-block size without a significant degradation of pixel encoding quality.11-22-2012
20110170603IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device and method whereby motion prediction can be suitably performed in accordance with a position of a region in an image to be encoded.07-14-2011
20090290643Method and apparatus for processing a signal - The present invention provides a signal processing method including searching a correlated unit having a highest correlation on a first domain for a current block, obtaining coding information for the correlated unit, and predicting coding information for a second domain of the current block using the obtained coding information.11-26-2009
20100278267METHODS AND APPARATUS FOR VIDEO ENCODING AND DECODING USING PARAMETRIC FILTERING - There are provided methods and apparatus for video coding. Using the method, a video encoder (11-04-2010
20090296821METHOD AND DEVICE FOR VIDEO DATA TRANSMISSION - For transmitting a sequence of video images on a network between a server and a client, that sequence being coded according to a hybrid predictive coding mode and comprising a plurality of images, each image being broken down into a plurality of macroblocks of pixels: the plurality of macroblocks is classified (E12-03-2009
20090296820Signal Processing Apparatus And Projection Display Apparatus - A signal processing apparatus includes: a specification unit configured to specify, based on plural pixels forming the target block, a partial region which is a part of the target block; a search-region shifting unit configured to sequentially shift, within the reference frame a search region which is compared with the partial region; a comparing unit configured to calculate a degree of coincidence between the search region and the partial region, and to specify a coincidence region which is the search region having the highest degree of coincidence with the partial region, as the search region is shifted; and a detecting unit configured to detect the motion vector of the target block based on both positions of the partial region within the target frame ad the coincidence region within the reference frame.12-03-2009
20090296819Moving Picture Decoding Apparatus and Moving Picture Decoding Method - According to one embodiment, a moving picture decoding apparatus comprises a decoding module configured to decode an input stream containing coded moving picture data and coding information of the coded moving picture data and configured to produce decoded moving picture data and decoding information, an interpolation image generation module configured to generate an interpolation image frame to be interposed between frames in the decoded moving picture data, and an image generation control module configured to control the generation of the interpolation image frame based on the decoding information.12-03-2009
20090296818METHOD AND SYSTEM FOR CREATING AN INTERPOLATED IMAGE - The invention relates to a method for creating an interpolated image between a previous image and a current image in a video stream. The invention also relates to an image processing system for creating an interpolated image between a previous image and a current image in a video stream. The invention is based on the following principle: a motion estimator generates at least two vector fields, one at a temporal position smaller then 1 A, and another at a temporal position greater than 1 A. Then occlusion detection is done to detect covering and uncovering areas. A first vector is fetched from the first vector field and a second vector is motion vector fetched from the second vector field. If there is covering, the up-conversion vector is the second vector; if there is uncovering, the up-conversion vector is the first vector; if there is no uncovering-covering, the up-conversion may be either the first vector or the second vector. In this way, the up-conversion vector points at the correct original segment values in the previous image and the current image.12-03-2009
20090296815METHOD AND APPARATUS OF DE-INTERLACING VIDEO - Methods of decoding video bitstreams and related devices are disclosed. The claimed methods include reconstructing video frames from a video bitstream 12-03-2009
20100118963IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - There is provided an image processing apparatus including an acquiring unit for acquiring moving image data containing a plurality of successive frames, and one or a plurality of image data corresponding to the frames and having a spatial resolution higher than the frames; a motion prediction unit for detecting a motion vector between the frames using the moving image data; and an image generation unit for generating motion compensated image data corresponding to a predetermined frame based on the image data and the motion vector. The image generation unit generates the motion compensated image data being positioned between the predetermined frame and a frame corresponding to the image data and corresponding to the frame, and generates motion compensated image data corresponding to the predetermined frame based on the motion compensated image data and the motion vector.05-13-2010
20100118964VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-13-2010
20100111184MOTION VECTOR SEARCH METHOD AND APPARATUS, PROGRAM THEREFOR, AND STORAGE MEDIUM WHICH STORES THE PROGRAM - A motion vector search method used in video encoding which performs motion-compensated prediction. The method includes inputting a motion vector which has been searched for with respect to an encoding target block; computing a motion vector having a minimum overhead cost which minimizes the amount of code generated for the motion vector of the encoding target block; limiting a search area based on the input motion vector and the motion vector having the minimum overhead cost; and searching for a motion vector by searching only the limited search area. It is possible to compute a predicted vector of the encoding target block based on a motion vector of an already-encoded block in the vicinity of the target block, and determine the computed predicted vector to be the motion vector having the minimum overhead cost.05-06-2010
20100061458METHOD AND APPARATUS FOR FAST MOTION ESTIMATION - Embodiments of the invention generally provide a method and apparatus for fast motion estimation. One embodiment of a method for motion estimation includes classifying a macroblock of a source frame in accordance with an initial matching cost, an intermediate matching cost, and a final matching cost, where the intermediate matching cost is estimated based on a predicted motion vector for the source frame and the final matching cost is estimated based on a final motion vector for a correlated macroblock in a prior frame, performing motion estimation for the macroblock based upon the classifying, wherein an early termination is applied in accordance with a result of the classifying, and outputting a motion vector for the macroblock based on a result of the motion estimation.03-11-2010
20110200107APPARATUS AND METHOD FOR MOTION ESTIMATION AND IMAGE PROCESSING APPARATUS - A motion estimation apparatus and method for quickly performing video encoding based on a user input through a user input device are provided. The motion estimation apparatus includes an input receiver for receiving a user input, an input pattern analysis unit for analyzing the received user input and determining a user input pattern according to the analyzed user input, a storage for storing history information of a motion vector according to the user input pattern, and a motion estimator for initially estimating a motion vector of a motion estimation block of a current frame with reference to history information of a motion vector corresponding to the user input pattern stored in the storage, deciding a search location of a block matching the motion estimation block from a reference frame, and performing motion estimation on the motion estimation block using the decided search location.08-18-2011
20080212680METHOD AND SYSTEM FOR TRANSCODING VIDEO DATA - A first method of transcoding video data is disclosed that generates a motion vector for a macroblock encoded as a dual prime macro block that has a direct motion vector, and differential motion vector for its two fields respectively. Another method of transcoding includes replacing a skipped P-macroblock that has been used to backward predict a B-Frame with a P-macroblock having a motion vector of zero. Another method of transcoding includes replacing a skipped B-macroblock with a macroblock having a motion vector from a macroblock of the same frame of the skipped B-macroblock that is not co-located.09-04-2008
20080212675Motion Vector Estimating Device, and Motion Vector Estimating Method - To provide a motion vector estimating device which is capable of calculating the optimum motion vector by a trade-off between the bit rate of a motion vector and a differential amount, and estimating a motion vector in a pipeline structure at high speed, a motion vector estimating method which enables the same. The motion vector estimating device (09-04-2008
20120294366VIDEO PRE-ENCODING ANALYZING METHOD FOR MULTIPLE BIT RATE ENCODING SYSTEM - A method for encoding video for communication over a network includes receiving, at a first video encoder, video data that defines frames, generating; by the first video encoder, motion vectors that characterize motion between frames of the video data; and communicating, by the first video encoder, the video data and metadata that defines at least the motion vectors to a second video encoder. The method also includes generating, by the second video encoder, refined motion vectors based on the video data and the motion vectors communicated from the first video encoder; and encoding, by the second video encoder, the video data based on the refined motion vectors.11-22-2012
20120294369METHODS AND APPARATUS FOR SAMPLING-BASED SUPER RESOLUTION VIDEO ENCODING AND DECODING - Methods and apparatus are provided for sampling-based super resolution video encoding and decoding. The encoding method receives high resolution pictures and generates low resolution pictures and metadata there from, the metadata for guiding post-decoding post-processing of the low resolution pictures and the metadata; and then encodes the low resolution pictures and the metadata using at least one encoder. The corresponding decoding method receives a bitstream and decodes low resolution pictures and metadata there from using a decoder; and then reconstructs high resolution pictures respectively corresponding to the low resolution pictures using the low resolution pictures and the metadata.11-22-2012
20120294372MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMS THEREOF - In motion vector prediction encoding, the efficiency of motion vector prediction is improved and the efficiency of moving picture encoding is improved. A motion search is performed for a block to be encoded in a picture to be encoded using an encoded reference picture to calculate a motion vector. A plurality of blocks which include at least one of encoded blocks in the picture to be encoded and encoded blocks in an encoded picture and in predetermined positions relative to the position of the block to be encoded in the picture to be encoded are set as primary candidate blocks, and N primary candidate reference motion vectors are determined from motion vectors used in encoding the primary candidate blocks. The degrees of reliability of the primary candidate reference motion vectors which quantitatively represent effectiveness in motion vector prediction of the block to be encoded is calculated using encoded picture information for each of the primary candidate reference motion vectors. Primary candidate reference motion vectors having degrees of reliability that are greater than a predetermined threshold are selected from the N primary candidate reference motion vectors as secondary candidate reference motion vectors. A predictive motion vector of the block to be encoded is calculated using the secondary candidate reference motion vectors, and a residual between the motion vector obtained through the motion search of the block to be encoded and the predictive motion vector is encoded as encoded information of the motion vector.11-22-2012
20120294370SYSTEM AND METHOD FOR LOW COMPLEXITY MOTION VECTOR DERIVATION - A system and method for performing candidate-based decoder-side motion vector determination (DMVD). Candidate motion vectors (MVs) may be rounded to the nearest whole or integer pixel. The rounded candidate MV having the best sum of absolute differences (SAD) may be identified. This may be used as the final MV. Alternatively, the un-rounded MV corresponding to this rounded candidate MV may be used as the final MV. Alternatively, a small range integer search may be performed around the chosen rounded candidate MV, and the best integer pixel in the search area may be identified and used to define the final MV. Alternatively, an intermediate MV may be chosen, where this MV is intermediate between the chosen rounded candidate MV and the MV corresponding to the best integer pixel in the search area.11-22-2012
20110206125ADAPTIVE MOTION RESOLUTION FOR VIDEO CODING - A video encoder may encode video data by adaptively selecting between one-eighth-pixel and one-quarter-pixel precision motion vectors, and signal the selected precision. In one example, an apparatus includes a video encoder to encode a block of video data using a one-eighth-pixel precision motion vector when use of the one-eighth-pixel precision motion vector is determined to be preferable for the block over a one-quarter-pixel precision motion vector, and to generate a signal value indicative of the use of the one-eighth-pixel precision motion vector for the block, and an output interface to output the encoded block and the signal value. A video decoder may be configured to receive the signal value and the encoded block, analyze the signal value to determine whether the block was encoded using one-eighth-pixel precision or one-quarter-pixel precision, and decode the block based on the determination.08-25-2011
20100091864Moving-image-similarity determination device, encoding device, and feature calculating method - A moving-image similarity determination device includes an acquiring unit that acquires a frame included in moving image data obtained by encoding a moving image including a plurality of images, the frame corresponding to an individual image of the plurality of images; a calculating unit that calculates a feature value indicating complexity of an original image of the frame based on a data amount of the frame acquired by the acquiring unit and on a quantization step used upon encoding; an accumulating unit that accumulates the feature value calculated for each image by the calculating unit; and a determining unit that that determines whether two moving images are similar to each other by comparing the feature values accumulated by the accumulating unit.04-15-2010
20100061463VIDEO TYPE CLASSIFICATION - A video classification method includes detecting pulldown video frames from within a sequence of video frames, for each video frame within said sequence identifying those frames containing inter-field motion, for each frame containing inter-field motion generating a corresponding top field and bottom field, separately correlating the generated top field with a top field of the video frame immediately previous to the frame containing inter-field motion and with a top field of the video frame immediately subsequent to the frame containing the inter-field motion, separately correlating the generated bottom field with a bottom field of the immediately previous video frame and with a bottom field of the immediately subsequent video frame and determining from the outcome of said correlations if the frame containing inter-field motion is a pulldown frame.03-11-2010
20100061462CODING APPARATUS AND CODING METHOD - A coding apparatus includes a window information acquiring unit acquiring window information indicating an arrangement of windows on a screen that includes a plurality of windows, an identifying unit identifying macroblocks that include a border between overlapping windows from the window information and macroblock information indicating an arrangement of macroblocks into which the screen is partitioned, a classifying unit partitioning the identified macroblocks into sub-blocks so as to conform to the border and classifying the sub-blocks into which the macroblocks are partitioned into groups, and a coding unit coding the sub-blocks classified into the groups by applying the result of the motion vector prediction to the other sub-blocks classified in the same group.03-11-2010
20100061457METHOD AND APPARATUS FOR VLC ENCODING IN A VIDEO ENCODING SYSTEM - Method and apparatus for variable length code (VLC) encoding is described. In some examples, a symbol of frequency transform values having a run and a level is VLC encoded. An address is generated, at a processor, for a lookup table (LUT) in a memory based on the run and the level, the LUT storing VLC entries for all possible combinations of run values ranging from minimum to maximum runs and level values ranging from minimum to maximum levels, each of the VLC entries including a flag indicative of an escape mode. A VLC entry is read from the LUT using the address. A VLC code and bit length are obtained from the VLC entry if the flag in the VLC entry is a first value. A fixed length VLC code is generated from an escape code, the run, and the level if the flag in the VLC entry is a second value.03-11-2010
20100061460METHOD AND APPARATUS FOR RECOVERING A DISPLAY PICTURE SEQUENCE FROM A CODED DIGITAL VIDEO SIGNAL - A method for recovering a display picture sequence from a coded digital video signal with a variable data rate comprises the steps of 03-11-2010
20090168888IMAGE INFORMATION ENCODING METHOD AND ENCODER, AND IMAGE INFORMATION DECODING METHOD AND DECODER - In an image information encoder (07-02-2009
20090168885TWO-DIMENSIONAL INTERPOLATION ARCHITECTURE FOR MOTION COMPENSATION IN MULTIPLE VIDEO STANDARDS - The present invention provides an apparatus for interpolation which is able to process input data with multiple video standards without sacrificing chip area. The interpolation unit comprises: a first interpolation unit for interpolating input data; a second interpolation unit for interpolating input data; a filter indicator for providing information to the first interpolation unit and the second interpolation unit; and an output unit for multiplexing and averaging output from the first interpolation unit and the second interpolation unit. The present invention also provides a motion compensation unit and a decoder for processing multiple video standards.07-02-2009
20090168890PREDICTING MOTION VECTORS FOR FIELDS OF FORWARD-PREDICTED INTERLACED VIDEO FRAMES - Techniques and tools for encoding and decoding predicted images in interlaced video are described. For example, a video encoder or decoder computes a motion vector predictor for a motion vector for a portion (e.g., a block or macroblock) of an interlaced P-field, including selecting between using a same polarity or opposite polarity motion vector predictor for the portion. The encoder/decoder processes the motion vector based at least in part on the motion vector predictor computed for the motion vector. The processing can comprise computing a motion vector differential between the motion vector and the motion vector predictor during encoding and reconstructing the motion vector from a motion vector differential and the motion vector predictor during decoding. The selecting can be based at least in part on a count of opposite polarity motion vectors for a neighborhood around the portion and/or a count of same polarity motion vectors.07-02-2009
20100091860SYSTEM AND METHOD FOR LOW-LATENCY PROCESSING OF INTRA-FRAME VIDEO PIXEL BLOCK PREDICTION - A method and system for low-latency processing of intra-frame video pixel block prediction including: predicting a pixel block based on boundary pixels of left and upper neighbor blocks of said pixel block; subtracting said predicted pixel block from a source pixel block to generate a prediction error; forward transforming and quantizing said prediction error to generate a residual data; inverse transforming and quantizing said residual data; adding said predicted pixel block to said inverse transformed and quantized residual data to generate a reconstructed pixel block; pre-computing blocks of DC-coefficients used with luma and chroma intra prediction modes; pre-computing mode selection of a best prediction mode of said luma and chroma intra prediction modes; and outputting said residual data to be used in entropy or arithmetic coding, and a reconstructed data used for motion prediction.04-15-2010
20090003450Image Decoder - The present invention provides an image decoder which decodes a stream encoded with standard resolution and transforms it into a high-definition image with a better image quality. An intra-field pixel interpolation module generates an interpolated pixel using pixels in a field. An inter-field pixel interpolation module generates an interpolated pixel using pixels from another field. A weighted averaging module refers to the prediction mode used in predictive encoding for the coded stream. If the prediction mode is a field prediction mode, it increases the mixture ratio of interpolated pixels generated by the intra-field pixel interpolation module, and if the prediction mode is a frame prediction mode, increases the mixture ratio of interpolated pixels generated by the inter-field pixel interpolation module.01-01-2009
20090003447Innovations in video decoder implementations - Video decoding innovations for multithreading implementations and graphics processor unit (“GPU”) implementations are described. For example, for multithreaded decoding, a decoder uses innovations in the areas of layered data structures, picture extent discovery, a picture command queue, and/or task scheduling for multithreading. Or, for a GPU implementation, a decoder uses innovations in the areas of inverse transforms, inverse quantization, fractional interpolation, intra prediction using waves, loop filtering using waves, memory usage and/or performance-adaptive loop filtering. Innovations are also described in the areas of error handling and recovery, determination of neighbor availability for operations such as context modeling and intra prediction, CABAC decoding, computation of collocated information for direct mode macroblocks in B slices, reduction of memory consumption, implementation of trick play modes, and picture dropping for quality adjustment.01-01-2009
20090003448IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD AND IMAGE DECODING METHOD - An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.01-01-2009
20100135396IMAGE PROCESSING DEVICE - Provided is an image processing device. The image processing device includes: a plurality of operation units; and a controller unit storing an occurred bit amount to calculate a rate-distortion cost value and transmitting the occurred bit amount to each of the plurality of operation units, wherein at least one of the plurality of operation units calculates each distortion value with respect to a plurality of encoding modes and calculates each rate-distortion cost value with respect to the plurality of encoding modes using the calculated each distortion value and occurred bit amount.06-03-2010
20110206124Object tracking using graphics engine derived vectors in a motion estimation system - A method and apparatus are provided for motion estimation in a sequence of images. One or more motion vectors representing movement of a camera or viewer position or direction are determined between each pair of fields or frames in the sequence of images. A set of candidate motion vectors is then determined for deriving positions of objects in a field or frame from the positions of objects in a previous field or frame. This set of candidate motion vectors is adjusted using the motion vectors representing movement of camera or viewer position and thus a set of motion vectors is derived for a sequence of images using the adjusted set of candidate motion vectors.08-25-2011
20110142132Overlapped Block Disparity Estimation and Compensation Architecture - Overlapped block disparity estimation and compensation is described. Compensating for images with overlapped block disparity compensation (OBDC) involves determining if OBDC is enabled in a video bit stream, and determining if OBDC is enabled for one or more macroblocks that neighbor a first macroblock within the video bit stream. The neighboring macroblocks may be transform coded. If OBDC is enabled in the video bit stream and for the one or more neighboring macroblocks, predictions may be made for a region of the first macroblock that has an edge adjacent with the neighboring macroblocks. OBDC can be causally applied. Disparity compensation parameters or modes may be shared amongst views or layers. A variety of predictions may be used with causally-applied OBDC.06-16-2011
20090034620MOTION ESTIMATION METHOD - A motion estimation method capable of reducing the amount of calculation as compared to a full search method. In the method, a coarse search block and fine search blocks are defined. The fine search blocks are given by dividing the coarse search block into a plurality of blocks so that the fine search blocks are contained in the coarse search block. A sparsely interpolated image and a densely interpolated image are defined. A first search is performed using the defined coarse search block and the defined sparsely interpolated image. A second search is performed using the defined coarse search block and the defined densely interpolated image. With regard to search blocks belonging to the fine search blocks, only a surrounding region of an optimal point obtained in the first search is searched.02-05-2009
20100128792VIDEO DECODING METHOD - A method of decoding videos comprises the steps of performing, in respect of a decoding objective area of decoding objective frame, a motion search by using images of plural frames finished with decoding and deciding, on the basis of the result of the motion search, whether an image of the decoding objective area is to be generated through an interpolation process or a decoded image is to be generated through motion compensation using data included in an encoding stream.05-27-2010
20100135407RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A computer-readable medium having stored thereon an image decoding program which, when executed by a computer, performs image decoding, wherein synthesizing a prediction image is performable using a positive rounding method and a negative rounding method for interpolating intensity values of pixels; wherein the interpolation of intensity values of pixels is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; wherein the rounding method information specifies one of two values; wherein one of the two values specifies a positive rounding method, and another one of the two values specifies a negative rounding method; and wherein the rounding method information consists of one bit.06-03-2010
20100135411RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A computer-readable medium having stored thereon an image decoding program which, when executed by a computer, performs image decoding, wherein the synthesizing a prediction image is performable using a positive rounding method and a negative rounding method for interpolating intensity values of pixels; wherein the interpolation of intensity values of pixels is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; wherein the rounding method information is included in a header section of the coded information of the currently decoded image; wherein the rounding method information specifies one of two values; wherein one of the two values specifies a positive rounding method, and another one of the two values specifies a negative rounding method; and wherein the rounding method information consists of one bit.06-03-2010
20100135410RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A computer-readable medium having stored thereon an image decoding program which, when executed by a computer, performs image decoding, wherein the synthesizing a prediction image is performable using a positive rounding method and a negative rounding method for interpolating intensity values of pixels; wherein the interpolation of intensity values of pixels is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; wherein the rounding method information is included in a header section of the coded information of the currently decoded image; wherein the rounding method information specifies one of two values; and wherein one of the two values specifies a positive rounding method, and another one of the two values specifies a negative rounding method.06-03-2010
20100135409RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A computer-readable medium having stored thereon an image decoding program which, when executed by a computer, performs: storing a reference image which is a previously decoded image; receiving coded information including motion vector and rounding method information specifying a rounding method used in synthesizing a prediction image; and synthesizing the prediction image by performing motion compensation using the motion vector information and the reference image; wherein the synthesizing a prediction image is performable using positive and negative rounding methods for interpolating intensity values of pixels; wherein the interpolation of intensity values of pixels is performed using a rounding method specified by the rounding method information included in coded information of the currently decoded image; wherein the rounding method information is included in a header section of the coded information of the currently decoded image; and wherein the rounding method information specifies one of a plurality of values.06-03-2010
20100135408RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A computer-readable medium having stored thereon an image decoding program which, when executed by a computer, performs: storing a reference image which is a previously decoded image; receiving coded information including motion vector information and rounding method information specifying a rounding method used in synthesizing a prediction image of a currently decoded image; and synthesizing the prediction image by performing motion compensation using the motion vector information and the reference image; wherein the synthesizing a prediction image is performable using positive and negative rounding methods for interpolating intensity values of pixels; wherein the interpolation of intensity values of pixels is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; and wherein the rounding method information is included in a header section of the coded information of the currently decoded image.06-03-2010
20100135406RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A computer-readable medium having stored thereon an image decoding program which, when executed by a computer, performs: storing a reference image which is a previously decoded image; receiving coded information including motion vector information and rounding method information specifying a rounding method used in synthesizing a prediction image of a currently decoded image; and synthesizing the prediction image by performing motion compensation using the motion vector information and the reference image; wherein the step of synthesizing a prediction image is performable using a positive rounding method and a negative rounding method for interpolating intensity values of pixels; wherein the interpolation of intensity values of pixels is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; and wherein the rounding method information specifies one of a plurality of values.06-03-2010
20100135405RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A computer-readable medium having stored thereon an image decoding program which, when executed by a computer, performs: storing a reference image which is a previously decoded image; receiving coded information including motion vector information and rounding method information specifying a rounding method used in synthesizing a prediction image of a currently decoded image; and synthesizing the prediction image by performing motion compensation using the motion vector information and the reference image; wherein the step of synthesizing a prediction image is performable using a positive rounding method and a negative rounding method for interpolating intensity values of pixels; wherein the interpolation of intensity values of pixels is performed using a rounding method specified by the rounding method information; and wherein the rounding method information is included in coded information of the currently decoded image.06-03-2010
20100135398METHOD FOR DETERMINING FILTER COEFFICIENT OF TWO-DIMENSIONAL ADAPTIVE INTERPOLATION FILTER - A method for efficiently determining an appropriate filter coefficient of a two-dimensional adaptive interpolation filter with less calculation, the method including: a motion estimating step (S06-03-2010
20100135400Processing Or Compressing N-dimensional Signals With Warped Wavelet Packets And Bandelets - A method and apparatus for processing or compressing an n-dimensional digital signal by constructing a sparse representation which takes advantage of the signal geometrical regularity. The invention comprises a warped wavelet packet transform which performs a cascade of warped subband filtering along warping grids of sampling points adapted to the signal geometry. It also comprises a bandeletisation which decorrelates the warped wavelet packet coefficients to produce a sparse representation. An inverse warped wavelet packet transform and an inverse bandeletisation reconstruct a signal from its bandelet representation. The invention comprises a compression system which quantizes and codes the bandelet representation, a decompression system, a restoration system which enhances a signal by filtering its bandelet representation, and a feature vector extraction system for pattern recognition applications of a bandelet representation.06-03-2010
20100135403RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - An image decoder, wherein motion compensation is performed with half-pixel accuracy and uses bilinear interpolation to calculate intensity values of chrominance or luminance at points where no pixels actually exist in the reference image, the bilinear interpolation being performable using a positive rounding method and a negative rounding method; wherein the bilinear interpolation is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; wherein the rounding method information specifies one of two values; wherein one of the two values specifies a positive rounding method, and another one of the two values specifies a negative rounding method; and wherein the rounding method information consists of one bit.06-03-2010
20100135401RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - An image decoder including: a demultiplexer extracting motion vector information, quantized DCT coefficients, and rounding method information; a dequantizer dequantizing to DCT coefficients; an inverse DCT converter converting to DCT coefficients to obtain an error image; a synthesizer synthesizing a prediction image of a currently decoded image by performing motion compensation using the motion vector information, the rounding method information, and a reference image which is a previously decoded image; and an adder adding the prediction image to the error image to obtain a decoded image; wherein the motion compensation is performed with half-pixel accuracy and uses bilinear interpolation to calculate intensity values of chrominance or luminance at points where no pixels actually exist in the reference image, the bilinear interpolation being performable using positive and negative rounding methods and is performed using a rounding method specified by the rounding method information specifying one of a plurality of values.06-03-2010
20090168886MOVING PICTURE DECODING DEVICE - A moving picture decoding device 07-02-2009
20090168882SPECULATIVE MOTION PREDICTION CACHE - A method and apparatus to improve motion prediction in video processing systems is introduced. When a motion prediction cache completes requesting data for a current macroblock and enters an into idle state, data comprising one or more reference frames is speculatively requested, with the hope that the requested data are will be needed in a subsequent macroblock. If the speculative data is needed, then it is consumed. However, if the speculative data is not needed, then the correct data must be requested and a price is paid for an extra memory read bandwidth. In case the speculative data is the correct data for the subsequent macroblock, the effective memory read latency is reduced and the decode performance increases. The video decoder becomes more immune to memory read latency.07-02-2009
20080279280MOVING PICTURE DECODING INTEGRATED CIRCUIT - A moving picture decoding device includes a cache memory for storing a reference picture, in addition to a multi-frame memory (external memory) for storing reference pixel data of a plurality of reference pictures, for processing of a HD image size large in angle of view. A reference structure analyzer analyzes the reference structure of pictures. A reference picture manager not only writes a reference picture high in the possibility of being referred to by an object picture to be decoded in the multi-frame memory but also stores such a reference picture in the cache memory, using the analysis results of the picture reference structure. This minimizes the capacity of the cache memory and also reduces the data transfer amount from the external memory.11-13-2008
20080285654Multiview coding with geometry-based disparity prediction - Described herein is technology for, among other things, multiview coding with geometry-based disparity prediction. The geometry-based disparity prediction involves determining corresponding block pairs in a number of reconstructed images for an image being coded. The reconstructed images and the image represent different views of a scene at a point in time. Each corresponding block pair is projected on the image. This enables determination of disparity vector candidates. For each coding block of the image, a predicted disparity vector is determined based on the disparity vector candidates. Then, the predicted disparity vector may be utilized to obtain the bits to be encoded. The geometry-based disparity prediction reduces the number of encoded bits.11-20-2008
20080285651SPATIO-TEMPORAL BOUNDARY MATCHING ALGORITHM FOR TEMPORAL ERROR CONCEALMENT - A system and methodology for concealing an error in a video signal is provided. In accordance with one aspect of the present invention, the system and methodology employ a Spatio-Temporal Boundary Matching Algorithm, which utilizes a distortion function that takes into account both the spatial and temporal smoothness properties of a video sequence. Further, the methodology for concealing an error in a video signal comprises receiving a video signal having an erroneous frame, creating a candidate set of motion vectors, selecting a motion vector from the candidate set of motion vectors that best keeps temporal and spatial continuity through the erroneous frame, and reconstructing the erroneous frame using the selected motion vector.11-20-2008
20080285652Apparatus and methods for optimization of image and motion picture memory access - A cache memory device for location between a main memory and a requesting processor is disclosed. The main memory stores memory blocks, some of which are temporarily located in the cache memory device to improve retrieval performance. The cache memory device is configured to receive requests for respective memory blocks, and the cache memory device comprises an input pooling unit for pooling incoming requests for blocks of memory as well as a request selection mechanism configured for selecting amongst those pooled requests. The request selection mechanism operates according to one or more optimization criteria to optimize the operation of the cache memory device. The device is particularly useful for image and video compression.11-20-2008
20080292000SYSTEM AND METHOD OF PROVIDING MOTION ESTIMATION - A system and method of providing motion estimation is disclosed. A recursive motion estimation module works in conjunction with a non-recursive motion estimation module to provide candidate motion vectors to a selection module. The selection module determines which of the candidates is more likely to yield a desirable result and selects that candidate accordingly.11-27-2008
20090290641DIGITAL VIDEO COMPRESSION ACCELERATION BASED ON MOTION VECTORS PRODUCED BY CAMERAS - Architecture for accelerating video compression by using the motion vectors produced locally by a camera. Video frames are captured by the camera (e.g., a webcam) which also computes a motion vector for the frame. Metadata can also be generated that represent an index of motion quality associated with the motion vector. The motion vector is passed to a video compression engine which selectively uses the motion vector directly or alternatively as a seed for a compression and encoding algorithm. This algorithm produces a compressed video frame representing a motion estimate having a selected motion quality index value. In this way, complexity is reduced in the video compression engine, resulting in faster and more efficient video compression. Alternatively, the webcam sends a compressed video bitstream to reduce throughput on the connection and the receiving computing system processes residual information to derive an estimate of the quality index for each macroblock/kernel.11-26-2009
20100034274FAST MULTI-FRAME MOTION ESTIMATION WITH ADAPTIVE SEARCH STRATEGIES - A method includes examining a statistical distribution of motion vectors employed for motion compensation in a first frame of image data. The examining is to produce a distribution model of the motion vectors in the first frame. The method further includes selecting, based at least in part on the distribution model, a block-matching search pattern for use with respect to a second frame of image data. The second frame follows the first frame in a sequence of frames of image data.02-11-2010
20080310511Moving picture signal coding method, decoding method, coding apparatus, and decoding apparatus - Moving picture motion compensation coding/decoding predicts a motion vector in a coding block from a motion vector of the adjacent position and codes a differential motion vector calculated from the motion vector to be coded and its prediction motion vector. The coding is performed by switching the coding accuracy between a coding accuracy of the differential motion vector (12-18-2008
20080310510Image Coding, Recording and Reading Apparatus - An image coding, recording and reading apparatus generates a local decoded image which is used for motion compensation prediction at the same time when coding an original image to be coded so as to generate an original image coded stream, acquires a difference image which is a difference between the local decoded image and the original image to be coded, codes the difference image so as to generate a difference image coded stream, records the original image coded stream and the difference image stream generated thereby into a storage memory, and adds an original image and a difference image which are obtained by decoding both the above-mentioned coded streams read out of the storage memory, respectively, so as to generate an addition image.12-18-2008
20080267294TRANSCODERS AND METHODS - Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.10-30-2008
20080285653Motion estimation method - A method for estimating the motion vector for a current macroblock within a current frame is provided by reference to a number of reference macroblocks within the previous frame. The method includes the following steps. First, an error between the current macroblock within a current frame and each of the reference macroblocks is determined according to a weighted sum of absolute differences (SAD) operation. The weighted SAD operation is to emphasize the absolute differences for high-frequency pixels within the current macroblock. Next, the reference macroblock having the lowest error may be determined as a matched macroblock. Finally, the motion vector for the current macroblock can be defined as the displacement between the macroblock and the matched macroblock.11-20-2008
20080310512SEPARABLE DIRECTIONAL TRANSFORMS - This disclosure describes techniques for transforming residual blocks of video data. In particular, a plurality of different transforms selectively applied to the residual blocks based on the prediction mode of the video blocks. At least a portion of the plurality of transforms are separable directional transform specifically trained for a corresponding prediction mode to provide better energy compaction for the residual blocks of the given prediction mode. Using separable directional transforms offers the benefits of lower computation complexity and storage requirement than use of non-separable directional transforms. Additionally, a scan order used to scan the coefficients of the residual block may be adjusted when applying separable directional transforms. In particular, the scan order may be adjusted based on statistics associated with one or more previously coded blocks to better ensure that non-zero coefficients are grouped near the front of the one-dimensional coefficient vector to improve the effectiveness of entropy coding.12-18-2008
20100266042METHOD AND AN APPARATUS FOR DECODING/ENCODING A VIDEO SIGNAL - A method of decoding a video signal is disclosed. The present invention includes obtaining identification information indicating whether a coded picture of a current NAL unit is included in an inter-view picture group, obtaining inter-view reference information of a non-inter-view picture group according to the identification information, obtaining a motion vector according to the inter-view reference information of the non-inter-view picture group, deriving a position of a first corresponding block using the motion vector, and decoding a current block using motion information of the derived first corresponding block, wherein the inter-view reference information includes number information of reference views of the non-inter-view picture group.10-21-2010
20110007817RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoder including: a memory to store a previously-decoded reference image; and a synthesizer to receive an encoded bitstream including information of I and P frames, and execute motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method, specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame. The rounding method information is included in a header section, consists of one bit, and specifies one of a positive rounding method and a negative rounding method. The rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007816RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoder including: a memory to store a previously-decoded reference image; and a synthesizer to receive an encoded bitstream including information of I and P frames, and execute motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method. The bilinear interpolation is performed using rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame, where such is included in a header section of the coded information of the current frame and specifies one of a plurality of values. The rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007811RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoding method including: receiving an encoded bitstream including information of I and P frames; and executing motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and a previously-decoded reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method; wherein the bilinear interpolation is performed using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame; wherein the rounding method information is included in a header section of the coded information of the current frame and specifies one of a plurality of values. The rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007812RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoding method including: receiving an encoded bitstream including information of I and P frames; and executing motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and a previously-decoded reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method. The bilinear interpolation is performed using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame. The rounding method information is included in a header section, consists of one bit, and specifies a positive or negative rounding method; and wherein the rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007809RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoding method including: receiving an encoded bitstream including information of I and P frames; and executing motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and a previously decoded reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method, the bilinear interpolation using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame, wherein the rounding method information specifies one of two values specifying a positive or a negative rounding method; wherein the rounding method information consists of one bit; and wherein the rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007808RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoding method including: receiving an encoded bitstream including information of I and P frames, and executing motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and a reference image which is a previously decoded image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation being performable using a positive and negative rounding method; wherein the bilinear interpolation is performed using the rounding method specified by rounding method information included in the encoded bitstream of a P current frame; wherein the rounding method information specifies one of two values specifying a positive rounding method or a negative rounding method; and wherein the rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007807RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - An image decoding method comprising the steps of: receiving an encoded bitstream including information of I and P frames; and executing motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and a reference image which is a previously decoded image; wherein said motion compensation includes calculating intensity values at points where no pixels actually exist in the reference image by bilinear interpolation, the bilinear interpolation being performable using a positive rounding method and a negative rounding method, wherein the bilinear interpolation is performed using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame, and wherein the rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20080273597Method for searching for motion vector - Disclosed is video encoding technology, and more particularly a method for searching for a motion vector in a procedure of estimating a motion in video frames. The motion vector search method includes the steps of: individually calculating error energies of a center point and vertices of a search pattern in a search window used in a previous frame with respect to a center of the search window established in the current frame, thereby designating a motion vector candidate point; either determining the motion vector candidate point as a moving point of a motion vector, or calculating error energies of a pair of neighboring points and re-establishing a motion vector candidate point; and either determining the re-established motion vector candidate point as a moving point of a motion vector, or re-establishing a search pattern, re-checking the error energies of the center point, the vertices and the neighboring points, and determining a moving point of a motion vector.11-06-2008
20080304567Complexity Scalable Video Encoding - A video decoder, a video decoding method, a video encoder and a video encoding method are disclosed. A video decoder for decoding a video bitstream for an image block includes a motion vector resolution reducer and a motion compensator. The motion vector resolution reducer is for receiving decoded high resolution motion vectors included in the video bitstream and for reducing an accuracy of the high resolution motion vectors to correspond to a low resolution. The motion compensator, in signal communication with the motion vector resolution reducer, is for forming a motion compensated high resolution prediction using the reduced accuracy motion vectors. The video encoder for encoding scalable video comprises a motion compensator for forming a motion compensated full resolution prediction and combining combining the motion compensated full resolution prediction from an image block to form a prediction residual. The prediction residual is downsampled to form a low resolution downsampled prediction residual and then coded.12-11-2008
20080212676Motion parameter engine for true motion - Local motion estimation is described herein. Each picture of a video is partitioned into blocks for the local motion estimation. An extended-block FFT is calculated for each block, where the extended-block denotes that a certain area around the block is also included for applying FFT. Extending the block for FFT helps to account for the motion of objects that are moving into or out of the block. Phase correlation is applied to attain a set of Motion Vector (MV) candidates for the blocks, and a cost function is evaluated for each MV. If no MV candidate produces a cost function below a pre-defined threshold, a hierarchical variable block matching search is applied and the process is repeated with blocks for finer resolution. Also, predictive MV candidates are used during the block matching search along with temporal constraints tracking to select an MV that yields the minimum cost function.09-04-2008
20130010874CODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, RECORDING MEDIUM, AND PROGRAM - An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.01-10-2013
20130010870VIDEO ENCODER AND VIDEO DECODER - A video encoder includes: a motion compensation picture signal generator that generates a plurality of motion compensation picture signals in accordance with an encoding target signal and a plurality of reference pictures; a prediction signal generator that generates a prediction signal of the encoding target signal using the motion compensation picture signals; a prediction error signal generator that generates a prediction error signal representing a difference between the encoding target signal and the prediction signal; a selector that selects an entropy code assignment rule that is expected to minimize an information amount of an encoded state of the prediction error signal from a plurality of entropy code assignment rules for encoding the prediction error signal in accordance with the motion compensation picture signals; and an entropy encoder that generates encoded information from the prediction error signal in accordance with the selected entropy code assignment rule.01-10-2013
20110268190Video interpolation - A method and apparatus are provided for motion compensated video interpolation. Each field or frame in a sequence of video images is subdivided into a plurality of blocks and a motion vector field is derived using block matching for a current video field using data matched to a previous video field or frame. A first time instance is determined at which an interpolated block is to be displayed and a second time instance is determined at which a corresponding interpolated block is to be created. Video data for each block is interpolated at its second time instance for each block and is then output for display at the first time instance.11-03-2011
20110268191VIDEO ENCODING SYSTEM AND METHOD - A video encoding system for encoding consecutive images of a video sequence, the encoding of a current image being done with respect to a previous and/or subsequent image, the encoding system including an input data reception module to receive the current image to be encoded and to receive a non estimated real motion vector of at least one moved area of the current image; a divider to divide the current image into macroblocks; an estimation module to estimate motion vectors depending on the macroblocks of the current image and on the previous and/or subsequent image; a motion compensation module to receive motion vectors and to provide a predicted area; an allocating module to allocate the non estimated real motion vector to the macroblocks belonging to the moved area; a transmitting module to transmit the non estimated real motion vector directly to the motion compensation module without any estimation of the motion vectors by the estimation module for the plurality of macroblocks belonging to the moved area.11-03-2011
20080267292Method of and Apparatus for Recording Motion Picture - The present invention relates to a method of and an apparatus for recording motion picture with higher compression efficiency. The method comprising the steps of: performing block-based motion search for an input picture to calculate a motion vector of each block; setting up blocks having a similar motion vector as a similar motion area, the similar motion vector included in calculated motion vectors; calculating a representative motion vector by use of a motion vector provided by each block included in the set similar motion area; selecting which of the calculated representative motion vector or the motion vector provided by each block is to be used, for each block; and generating encoded data by use of the motion vector selected based on the result of the selection and a prediction picture of each block generated using the motion vector.10-30-2008
20100135397VIDEO ENCODING APPARATUS AND VIDEO ENCODING METHOD - According to one embodiment, a video encoding apparatus includes a motion vector calculation module, a motion boundary detection module, and a quantization parameter setting module. The motion vector calculation module calculates motion vectors for respective blocks in an input image. The motion boundary detection module detects a motion boundary between a motion region and a still region in the input image based on the motion vectors of the respective blocks. The quantization parameter setting module sets a value of a quantization parameter used to quantize a block that borders the detected motion boundary to a value smaller than a value which is set when the block does not border the motion boundary in accordance with a detection result of the motion boundary.06-03-2010
20100135395EFFICIENT SPATIO-TEMPORAL VIDEO UP-SCALING - A method of performing spatio-temporal up-scaling includes receiving an input video having a sequence of input frames, analyzing the input video to estimate motion vectors associated with the sequence of input frames, and determining corresponding motion compensation errors associated with the motion vectors. The method further includes determining an extent to which computational resources are to be respectively allocated to spatially up-scaling the sequence of input frames and temporally up-scaling the sequence of input frames, based on the estimated motion vectors and corresponding motion compensation errors. In addition, the method includes spatio-temporally up-scaling the sequence of input frames based on the determined extent.06-03-2010
20090034622Learning Filters For Enhancing The Quality Of Block Coded Still And Video Images - The invention relates to a method and an apparatus for reducing blocking artifacts in block-wise coding of still and video images. A learning filter generator is provided at the image encoder for generating a set of filters and associated filtering rules for filtering cross-boundary image patterns based on representative original and decoded training images using a supervised machine learning algorithm. An adaptive filter at the image decoder receives the generated filters and associated filtering rules and performs locally adaptive filtering in accordance with the received filtering rules.02-05-2009
20100142620METHOD OF GENERATING SIDE INFORMATION BY CORRECTING MOTION FIELD ERROR IN DISTRIBUTED VIDEO CODING AND DVC DECODER USING THE SAME - Disclosed is a technique that shifts the position of a motion compensation block by an error of a motion field and then performs motion compensation to estimate a current frame from past and future frames in digital video coding (DVC), thereby enhancing the accuracy of current frame estimation results.06-10-2010
20100142618METHODS AND APPARATUS FOR THE USE OF SLICE GROUPS IN ENCODING MULTI-VIEW VIDEO CODING (MVC) INFORMATION - There are provided methods and apparatus for the use of slice groups in encoding and decoding multi-view video coding (MVC) information. An apparatus (06-10-2010
20080240247METHOD OF ENCODING AND DECODING MOTION MODEL PARAMETERS AND VIDEO ENCODING AND DECODING METHOD AND APPARATUS USING MOTION MODEL PARAMETERS - Provided are a method of efficiently transmitting motion model parameters using temporal correlation between video frames and a video encoding and decoding method and apparatus, in which motion estimation and motion compensation are performed by generating a plurality of reference pictures that are motion-compensated using motion model parameters. Motion model parameters are encoded based on temporal correlation between motion vectors of representative points expressing the motion model parameters, global motion compensation is performed on a previous reference video frame using motion model parameters in order to generate a plurality of transformation reference pictures, and a current video frame is encoded using the plurality of transformation reference pictures.10-02-2008
20080240246VIDEO ENCODING AND DECODING METHOD AND APPARATUS - Provided are a video encoding and decoding method and apparatus, in which a current block is divided into partitions based on an edge in the current block, and motion estimation is performed on the divided partitions. Video encoding efficiency can be improved by encoding partitions that are obtained by dividing the current block along a predetermined line passing through pixels belonging to an edge around the current block from among neighboring pixels around the current block.10-02-2008
20080240245IMAGE ENCODING/DECODING METHOD AND APPARATUS - Provided are an image encoding/decoding method and apparatus, which assign a virtual motion vector to a block that is encoded in an intra prediction mode and generate a new prediction block that is a combination of a prediction block generated by motion compensation using the virtual motion vector and another prediction block generated by intra prediction.10-02-2008
20080240242Method and system for motion vector predictions - A video coding system is capable of encoding and/or decoding a video frame based on at least two different types of motion vector predictions. In one type, the motion vector predictor of a current block in the video frame is calculated using only the motion vector of a neighboring block which is directly above the current block. In another type, the motion vector predictor is calculated using the motion vector of a neighboring block which is located on the left side of the current block. In the former type, adjacent blocks located in the same row can be decoded independently of each other. In the latter type, adjacent blocks located in the same column can be decoded independently. The system may also be capable of conventional coding. An indication is used for indicating to the decoder side which type of motion vector predictor is used in the encoding.10-02-2008
20110206129IMAGE PREDICTION METHOD AND SYSTEM - A method is provided for computing a predicted frame from a first and a second reference frames, the method comprising, for each block of pixels in the predicted frame, the acts of defining a first block of pixels in the first reference frame collocated with a third block of pixels which is the block of pixels in the predicted frame; defining a second block of pixels corresponding, in the second reference frame, to the first block of pixels along the motion vector of the first block from the first to second reference frames; computing a first set of coefficients allowing the transformation of the pixels of the first block into pixels of the second block; computing pixels of the third block using the first set of coefficients and pixels from a fourth block collocated in the first reference frame with the second block of pixels.08-25-2011
20100142617METHOD AND APPARATUS FOR PROCESSING A VIDEO SIGNAL - An apparatus for processing a video signal and method thereof are disclosed. The present invention includes determining an intra reference block in a current view layer by using an intra motion information of an inter-reference unit in a reference view layer, the inter-reference unit being partially decoded and decoding the current block in the current view layer by using the intra-reference block. Accordingly, in coding a video signal, pictures failing to be substantially referred to for reconstruction of a current picture can be omitted. According to another aspect of the present invention, residual information having high redundancy is omitted to raise a compression ratio.06-10-2010
20090161760VIDEO PROCESSING SYSTEM WITH LAYERED VIDEO CODING AND METHODS FOR USE THEREWITH - A video processing system includes a video encoder that encodes a video stream into a independent video layer stream and a first dependent video layer stream based on a motion vector data or grayscale and color data.06-25-2009
20090161761MOTION REFINEMENT ENGINE WITH FLEXIBLE DIRECTION PROCESSING AND METHODS FOR USE THEREWITH - A motion refinement engine can be used in a video encoder for encoding a video input signal that includes a sequence of images that are segmented into a plurality of macroblocks. The motion refinement engine includes a motion search module, that generates at least one motion search motion vector for a macroblock of the plurality of macroblocks based on a first plurality of directions. A motion refinement module generates at least one refined motion vector for the macroblock of the plurality of macroblocks, based on a second plurality of directions, wherein the second plurality of directions differ from the first plurality of directions. In a further embodiment, motion search, motion refinement, and motion compensation are selectively performed in a single pass.06-25-2009
20090180540Method of processing a current field macroblock - In one embodiment, the method includes determining reference picture index numbers in a reference picture list. The reference picture index numbers increase for reference pictures having a decreasing display order with respect to a picture including the macroblock. The reference picture index numbers increase for reference pictures having an increasing display order with respect to the picture including the macroblock. The reference picture index numbers of the reference pictures having a decreasing display order are less than the reference picture index numbers of the reference pictures having an increasing display order. The embodiment further includes obtaining motion vector information for the current macroblock, obtaining a field reference picture index associated with the current field macroblock, selecting a frame reference picture based on the frame reference picture index and the reference picture index number, and selecting a field reference picture having a parity equal to a parity of the field macroblock if the field reference picture index is an even value. The he current macroblock is decoded based on the motion vector information and the selected field reference picture.07-16-2009
20090129471IMAGE DECODING APPARATUS AND METHOD FOR DECODING PREDICTION ENCODED IMAGE DATA - An image data decoding method for decoding compression encoded image data which includes a plurality of image pictures, includes: a selection step of selecting, when one of the plurality of image pictures are to be decoded, and when a first reference picture to be referred to by that image picture to be decoded is not decoded, a second reference picture from a picture already decoded as an alternative reference; and a decoding step of decoding the image picture to be decoded with reference to the second reference picture as an alternative to the first reference picture.05-21-2009
20090129473SYSTEM AND METHOD FOR ADJUSTING COMPRESSION NOISE REDUCTION BASED ON GLOBAL AND LOCAL MOTION DETECTION - A method of processing image data, comprising receiving image data, the image data discretizable into a plurality of segments and a plurality of motion vectors, each motion vector having a length and being associated with one of the plurality of segments, analyzing the motion vector of one of the plurality of segments of the image data, wherein the length of the motion vector is compared to a predetermined value, and adjusting the one segment by adjusting the degree of noise reduction applied to the image data comprising the segment.05-21-2009
20110206128METHOD AND APPARATUS FOR TRANSMITTING VIDEO CONTENT COMPRESSED BY CODEC - A method and apparatus of transmitting video content compressed by a codec to a second device is provided. The method includes: transmitting a codec selection request frame to the second device, the codec selection request frame includes an identifier of at least one codec to be used to compress the video content and requests approval of the use of the at least one codec; receiving a codec selection response frame from the second device, the codec selection response frame includes approval information indicating whether the use of the at least one codec is approved; and transmitting video content compressed by the at least one codec to the second device based on the codec selection response frame.08-25-2011
20110206127Method and Apparatus of Frame Interpolation - Methods and an apparatus for interpolating a digital image frame located between a first anchor frame and a second target frame are described. The apparatus comprises a motion vector estimator unit for estimating a block-based motion vector and a corresponding variable-size sub-block motion vector based on, and between, the first anchor frame and the second target frame; and a motion compensation interpolation unit for interpolating the digital image frame from the corresponding variable-size sub-block motion vector.08-25-2011
20090161763MOTION ESTIMATION WITH AN ADAPTIVE SEARCH RANGE - A method and apparatus for estimating motion of a pixel block in a first frame, the method including searching a first area in a second frame to identify a first matching block that corresponds to the pixel block, the first matching block including a first error value that is a minimum of at least one error criteria between the pixel block and the first matching block, calculating a first motion vector associated with the first matching block. The method further including searching a second area in the second frame to identify a second matching block that corresponds to the pixel block, the second matching block including a second error value that is a minimum of the at least one error criteria between the pixel block and the second matching block, calculating a second motion vector associated with the second matching block and selecting a final motion vector between the first and second motion vectors based on the first and second error value.06-25-2009
20090129476VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-21-2009
20090129472Method and Apparatus for Performing Motion Estimation - The present invention discloses a system and method for performing motion estimation associated with an encoder, e.g., a H.264/MPEG-4 AVC compliant encoder. For example, the method selects a motion vector centering for a current block in a search area of at least one reference picture. The method calculates a matching cost for each of a plurality of candidate motion vectors derived from the search area, and outputs at least one of the plurality of candidate motion vectors based on the matching cost associated with each of the plurality of candidate motion vectors to a main coding loop.05-21-2009
20090168880Method and Apparatus for Scalably Encoding/Decoding Video Signal - The present invention relates to a method that uses a motion vector of a predictive video frame of a sub-layer to encode a video signal and decode encoded video data. The method encodes a video signal using a preset method to a bit stream of a base layer while encoding the video signal using a scalable MCTF method to a bit stream of an enhanced layer. When an arbitrary frame of the video signal is encoded, information, enabling at least one vector, derived from a first motion vector of a first block included in the bit stream of the base layer in the same direction as the first motion vector, to be used as a motion vector of an image block in the arbitrary frame, is recorded in the bit stream of the enhanced layer. The first motion vector is directed in the same direction as a temporal direction from the arbitrary frame to the first block.07-02-2009
20090262823VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262824VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262825VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090262820VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-22-2009
20090185621Video encoding/decoding apparatus and method - Provided are a resolution varying video encoding/decoding apparatus and method are provided. The video encoding apparatus comprises a resolution varying encoder to perform an encoding operation using motion estimation and compensation on a current image having a first resolution and a current image having a second resolution according to a resolution control signal to generate a bitstream, and a controller to generate the resolution control signal for varying a resolution to the first resolution or the second resolution at a predetermined interval. The video decoding apparatus comprises an analyzer to analyze a bitstream composed of encoded data having a first resolution or a second resolution and to generate a resolution control signal corresponding to a resolution flag included in the bitstream, and a resolution varying decoder to perform a decoding operation using motion compensation on encoded data having the first resolution and encoded data having the second resolution according to the resolution control signal to generate a reconstructed image.07-23-2009
20080317130Image converting apparatus - In an image converting apparatus, when a count value of a time period counter is equal to “1”, a motion vector rate converting unit reads out a first coefficient “KAn” from a motion vector conversion table. While the read first coefficient “KAn” is employed, the motion vector rate converting unit performs a calculating process operation (MVx=MVn×KAn) for converting rates with respect to a motion vector “MVn” of 50 Hz detected by a motion vector detecting unit in a previous step so as to acquire a motion vector “MVx” of 60 Hz. When the motion vector “MVx” is outputted from the motion vector rate converting unit, an image correcting unit performs an image correcting process operation in accordance with a predetermined algorithm by employing the motion vector “MVx” with respect to a picture signal of 60 Hz outputted from an image rate converting unit.12-25-2008
20080317132System and Method for Fast Variable-Size Motion Estimation - Methods and systems for fast variable block-size motion estimation based on merging and splitting procedures for AVC video encoding are disclosed. The methods take advantage of the correlation of the Motion Vectors (MVs) of the different block-size modes to achieve a good computation reduction. Considering that the smaller the block-size difference between two block-sizes is, the more correlations between their MVs can be expected, the methods use a 8*8 block as an initial processing block to calculate prediction MVs. The prediction MVs are then used in predicting MVs for other block-sizes.12-25-2008
20080317128SYSTEM AND METHOD FOR BOUNDARY MOTION VECTOR CORRECTION IN MOTION COMPENSATED FRAME RATE - A system and method for more efficiently determining motion vectors of uncovering areas adjacent the edge of frames when the frame image is moving in the direction of the frame boundary. Backwards motion estimation is used to determine a block of video data which is, in one implementation, the block of video data adjacent the frame edge having a reliable motion vector known from the first frame. Once the block is identified, the blocks of video data in the uncovering area between the identified block and the frame boundary can then be assigned the motion vector data of the identified block.12-25-2008
20080317131Estimation/Compensation Device for Mb/Based Illumination Change and Method Thereof - An adaptive motion estimation/compensation device and a method thereof for MB-based illumination change are disclosed. If a macro block mode is determined as a newly designed P_L0_16×16_Mean by calculating the sum of an absolute difference, the motion estimation device CABAC-codes the absolute difference between the pixel mean of a current frame and the pixel mean of a candidate pattern block and transmits the CABAC-coded absolute difference to a pertinent decoder. With the present invention, the transmission amount of the bit stream transmitted to the decoder for decoding can be minimized by maximizing corresponding compressing rate.12-25-2008
20090003451SHARED PIPELINE ARCHITECTURE FOR MOTION VECTOR PREDICTION AND RESIDUAL DECODING - A shared pipeline architecture is provided for H.264 motion vector prediction and residual decoding, and intra prediction for CABAC and CALVC entropy in Main Profile and High Profile for standard and high definition applications. All motion vector predictions and residual decoding of I-type, P-type, and B-type pictures are completed through the shared pipeline. The architecture enables better performance and uses less memory than conventional architectures. The architecture can be completely implemented in hardware as a system-on-chip or chip set using, for example, field programmable gate array (FPGA) technology or application specific integrated circuitry (ASIC) or other custom-built logic.01-01-2009
20090034621Low-Complexity Motion Vector Prediction Systems and Methods - A method of motion vector prediction for use in differential motion vector coding within a block motion-compensation-based video coder. The video coder employs a generalized multiple reference picture buffer which may contain multiple reference pictures in both the forward and backward temporal direction from the current picture. For the purpose of coding selections of reference pictures within the buffer, the pictures are organized into two, potentially overlapping, lists of reference pictures. The prediction of a motion vector that selects a reference picture using a given reference picture list is not dependent upon any motion vectors that select their reference pictures using the other reference picture list. The values of spatially neighbouring motion vectors that use the same list of reference pictures as the motion vector being predicted are used for prediction, regardless of the relative temporal direction of the current and neighbouring motion vectors.02-05-2009
20120288006APPARATUS AND METHOD FOR IMAGE PROCESSING - The present invention relates to an apparatus and method for image processing allows for achievement of improved prediction efficiency in weighted prediction of chrominance signals. Upon receiving reference image pixel values referred to by motion vector information from a motion compensator (11-15-2012
20120288004IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The present invention relates to an image processing apparatus and an image processing method capable of improving an efficiency due to motion prediction. Blocks B11-15-2012
20120288000DESIGN SPACE EXPLORATION METHOD OF RECONFIGURABLE MOTION COMPENSATION ARCHITECTURE - A design space exploration method of a reconfigurable motion compensation architecture is disclosed. The method comprises: defining a predetermined application specification; extracting the community among plural motion compensation algorithms corresponding to plural video compression standards; analyzing the computation of the plural motion compensation algorithms basing on the community, thereby determining the computation elements included in a processing element; analyzing the data flow of the reconfigurable motion compensation architecture basing on the predetermined application specification, both in the cases of peak computation and worst data configuration, while executing the plural motion compensation algorithms with different data granularities and different number of the processing elements, thereby obtaining plural hardware parameters corresponding to the plural motion compensation algorithms; and selecting a predetermined data granularity and a predetermined number of the processing elements of the reconfigurable motion compensation architecture, basing on a predetermined design target and the plural hardware parameters previously obtained.11-15-2012
20120288002METHOD AND APPARATUS FOR COMPRESSING VIDEO USING TEMPLATE MATCHING AND MOTION PREDICTION - Provided is an apparatus and method for motion estimation using a template that is generated by applying an intra-prediction. A template including intra-prediction information of a current block may be generated, and an optimal predicted range may be retrieved by performing a template matching using the template.11-15-2012
20120287999SYNTAX ELEMENT PREDICTION IN ERROR CORRECTION - Architecture that improves error robustness in video coding and decoding. In particular, this can apply to motion vector prediction (MVP) such as a temporal MVP (TMVP). Flags can be used to indicate the use or non-use of a feature, such as to indicate whether the current slice uses or does not use TMVP, and to indicate in the slice header whether list prediction is allowed or not allowed. A flag can be signaled in sequence parameter set (SPS) or picture parameter set (PPS) as a way to enable an entire sequence to use or not use TMVP. TVMP can also be used to copy all the reference motion information to the current block. To address possible error problems, the full index of the TMVP can be recorded, and temporal information decoding refresh (TIDR) can be inserted into slices periodically.11-15-2012
20100002774MEMORY DEVICE AND DEVICE AND METHOD FOR DETECTING MOTION VECTOR - This invention relates to a memory device and the like that are preferably applied to a case where motion vector is detected using a block matching. Pixel data of a first frame (a reference frame) is stored in a unit A of memory cell array portion 01-07-2010
20100002773Motion-Compensated Temporal Recursive Filter - Motion compensation means for a time recursive filter includes a block motion estimation module (01-07-2010
20100002772METHOD AND DEVICE FOR RESTORING A VIDEO SEQUENCE - In order to restore a video sequence consisting of a plurality of images each comprising at least one block of pixels: the value of the similarity between a block of pixels to be restored in the current image and a plurality of blocks of a reference image is calculated (01-07-2010
20100002771Seamless Wireless Video Transmission For Multimedia Applications - A method of temporal error concealment for generating the image data of the missing macro-blocks in the current frame by using the previous frame and the correct data of the current frame is disclosed. The method includes the steps: first using Optimal Regression Plane to estimate the space motion vectors for each block in the missing macro-blocks; selecting appropriate motion vectors from the estimated space motion vectors and the correct temporal motion vectors in the pervious frame as the candidate motion vectors; dividing the missing macro-block into sub-blocks with optimal size; fine tuning the candidate motion vectors as the predicted motion vectors; and using the predicted motion vectors to generate the predicted image data for the missing macro-block and further concealing the effect of the missing macro-blocks upon the image quality of the current frame. The method reduces the computation time, speeds up the process, and improves the image quality.01-07-2010
20110222604MULTIPLE THREAD VIDEO ENCODING USING GOP MERGING AND BIT ALLOCATION - A method of encoding video wherein an end of scene is detected, frames are partitioned and groups of pictures (GOPs) may be merged. In the method, an end of scene in a plurality of input frames is detected. The input frames are partitioned into GOPs. If the number of frames at the end of scene GOP is below a low frame threshold, then those frames are merged with a preceding GOP. The GOPs are buffered and multiple threads of GOPs are encoded in parallel from the buffer in a single pass.09-15-2011
20110222603Method and System Making It Possible to Protect A Compressed Video Stream Against Errors Arising During a Transmission - A method is provided for protecting a compressed video stream that may be decomposed into a foreground plane composed of objects of a first type and a background plane composed of objects of a second type against errors during the transmission of this stream on an unreliable link, characterized in that it comprises at least the following steps: a) analyzing the stream in the compressed domain so as to define various image areas in which redundancy will be added, the motion estimation vectors and the transformed coefficients obtained in the compressed domain are transmitted to the redundancy addition step; b) adding redundancy to the objects of said areas determined in the previous step, a), while taking account of the motion estimation vectors and of the transformed coefficients obtained in the compressed domain; c) transmitting the set of areas forming the image.09-15-2011
20100002769SYSTEM AND METHOD FOR ENCODING AND DECODING INFORMATION IN DIGITAL SIGNAL CONTENT - Systems and methods for embedding and extracting data in a digital signal content are disclosed. In the various embodiments, a system includes a processing unit configured to receive the digital signal content and the data, and an encoder configured to embed the data into the digital signal content. In other of the various embodiments, a system includes a processing unit configured to receive a digital signal content having embedded data, and a decoder configured to extract the data from the digital signal content.01-07-2010
20090161762METHOD OF SCALABLE VIDEO CODING FOR VARYING SPATIAL SCALABILITY OF BITSTREAM IN REAL TIME AND A CODEC USING THE SAME - Methods of coding a bitstream in which the frames are encoded for enabling a spatial resolution is changed in real time, extracting the bitstream by adding a signaling message indicating that the spatial resolution is changed, and decoding the bitstream in which the spatial resolution is changed in real time after actively detects whether the spatial resolution is changed without additional information, and a codec using the methods are provided. Therefore, if the network has the restricted environment that the resolution is changed in real time while a video encoding and decoding or if there is a need to output the video whose the spatial resolution is partly changed in the decoder, the present invention provides methods to actively cope with the spatial resolution change of the video so as to efficiently watch the video.06-25-2009
20090080526DETECTING VISUAL GESTURAL PATTERNS - A processing device and method are provided for capturing images, via an image-capturing component of a processing device, and determining a motion of the processing device. An adaptive search center technique may be employed to determine a search center with respect to multiple equal-sized regions of an image frame, based on previously estimated motion vectors. One of several fast block matching methods may be used, based on one or more conditions, to match a block of pixels of one image frame with a second block of pixels of a second image. Upon matching blocks of pixels, motion vectors of the multiple equal-sized regions may be estimated. The motion may be determined, based on the estimated motion vectors, and an associated action may be performed. Various embodiments may implement techniques to distinguish motion blur from de-focus blur and to determine a change in lighting condition.03-26-2009
20120069905MOVING IMAGE ENCODING AND DECODING DEVICE - A moving picture encoding device includes a prediction signal generation method controller that determines, for each of a plurality of target blocks, a processing method. The processing method can be performed on one of a plurality of reference pictures for generating a prediction signal for each respective target block. The prediction signal generation method controller also determines a motion vector and a reference picture for each respective target block by performing motion prediction. The moving picture encoding device also includes a prediction signal generator and an encoder. The prediction signal generator generates the prediction signal for the respective target block by performing processing on the respective reference picture based on the respective processing method, and the encoder encodes information on the respective processing method on each respective reference picture together with a reference list number identifying the respective reference picture and motion vector information of every target block.03-22-2012
20090080528Video codec method with high performance - The present invention relates to a video codec method with high performance comprising the following steps: 1. predicting the motion vectors in the blocks to be predicted through Median Prediction and Up-layer Prediction, 2. terminate the motion prediction in the blocks predicted once the predicted motion vectors are below a threshold value. Otherwise, 3. Sample data in the block to be predicted and then, based on the data sampled, determine a block best resembling the above block from which samples are sampled for a further OTA search to finish a block motion prediction. By such steps, the overall amount of video encoding processing is dramatically reduced and performance is improved without sacrificing video quality. In addition, we may make a more accurate motion prediction of the block to be predicted to avoid the wrong prediction that an OTA algorithm might result in when the motion vector is exceedingly large.03-26-2009
20090080530VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.03-26-2009
20090080529IMAGE ENCODING APPARATUS, METHOD OF CONTROLLING THEREFOR, AND PROGRAM - An image encoding apparatus for performing inter-frame encoding of moving image data is provided. The apparatus refers to a block within a frame other than a current frame to generate a first prediction image of a block to be encoded within the current frame, and performs prediction encoding using the first prediction image. The apparatus sets areas at set positions that differ from each other at least between mutually adjacent frames; and determines whether the block to be encoded within the current frame belongs to the area set with respect to the current frame. When the block to be encoded has been determined to belong to the area, the first prediction image is generated, with regard to the block to be encoded, upon referring to a frame that is decodable on its own and, in terms of time, is situated ahead of and closest to the frame to be encoded.03-26-2009
20090080527Method and Apparatus for Providing a Fast Motion Estimation Process - A process performs a search on a base reference frame in a video signal to determine a first motion vector for each of the possible partitions of a current macroblock. The first motion vector for a partition provides the most optimal match for the partition in the base reference frame. An optimal partition for the current macroblock, which gives a minimum motion estimation cost among all the possible partitions in the base reference frame, is determined. The process performs the search on the optimal partition over a non-base reference frame in the video signal to determine a second motion vector that provides the most optimal match for the corresponding partition in the non-base reference frame. A simplified search is performed on each partition other than the optimal partition over the non-base reference frame to determine the second motion vector for the corresponding partition.03-26-2009
20090080525System and Method for Adaptive Video Compression Motion Compensation - Methods and systems for video coding are provided. A method includes receiving a digital video stream. The digital video stream includes multiple sequential independent frames. The method further includes storing a first frame of the digital video stream. The method also includes encoding a second frame of the digital video stream using motion compensation with the stored first frame as a reference.03-26-2009
20130215968VIDEO INFORMATION ENCODING METHOD AND DECODING METHOD - The present invention relates to a method and apparatus for encoding and decoding video information. The video information encoding method according to the present invention comprises: a step of performing a prediction on a current block; and a step of entropy-encoding the predicted information and transmitting the encoded information. The step of performing a prediction comprises: a step of acquiring motion information on a neighboring block from the neighboring block of the current block; and a step of determining motion information on the current block on the basis of the acquired motion information. The transmitting step also involves transmitting information required for the prediction of the current block. According to the present invention, the complexity of video compression and the quantity of transmitted information may be reduced.08-22-2013
20110142134IMAGE CODING METHOD AND IMAGE CODING APPARATUS - A method of coding an original image, including: partitioning (S06-16-2011
20110142133VIDEO ENCODING METHOD AND VIDEO DECODING METHOD - Provided is a video encoding/decoding technique for improving the compression efficiency by reducing the motion vector code amount. In a video decoding process, the prediction vector calculation method is switched from one to another in accordance with a difference between predetermined motion vectors among a plurality of motion vectors of a peripheral block of a block to be decoded and already decoded. The calculated prediction vector is added to a difference vector decoded from an encoded stream so as to calculate a motion vector. By using the calculated motion vector, the inter-image prediction process is executed.06-16-2011
20090232216IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The present application provides an image processing apparatus, including: a correlation value calculation section configured to determine a correlation value between a target block and a each of reference blocks; a section configured to determine a highest value from among the correlation values; a motion vector detection section configured to detect a motion vector of the target block; and a section configured to calculate an index to reliability of the motion vector detected by the motion vector detection section.09-17-2009
20090232215Method and an Apparatus for Encoding or Decoding a Video Signal - A method of processing a video signal is disclosed. The present invention includes determining an intra prediction mode of a current block using a template region adjacent to the current block and obtaining a prediction value of the current block using the intra prediction mode of the current block. Accordingly, the present invention raises efficiency of video signal processing by enabling a decoder to derive information on a prediction mode of a current block in a decoder instead of transferring the information to the decoder.09-17-2009
20090097561Bit depth enhancement for scalable video coding - A video system includes an analyzer and a bit depth predictor. The analyzer receives a first coded video signal, which is indicative of first values for pixels. The first values are associated with a first bit depth. The analyzer, for each pixel, analyzes the first values for the pixels located in a neighborhood that contains said each pixel. The bit depth predictor, based at least in part on the analysis, generates a second coded video signal that is indicative of second values for the pixels. The second values are associated with a second bit depth that is different than the first bit depth.04-16-2009
20090097562SYSTEM AND METHOD OF ESTIMATING MOTION OF IMAGE USING BLOCK SAMPLING - A system and method of estimating a motion of an image using block sampling are provided. The motion estimation system includes: a block sampling unit to divide a frame of an input image into a plurality of blocks and sample the plurality of blocks based on a lattice structure; a first motion vector determination unit to determine a motion vector of a first current block using motion vectors of neighboring blocks of the first current block with respect to the sampled blocks; and a second motion vector determination unit to determine a motion vector of a second current block based on features of motion vectors of sampled neighboring blocks of the second current block wherein the second current block is not sampled.04-16-2009
20090097563METHOD AND APPARATUS FOR HANDLING VIDEO COMMUNICATION ERRORS - A method for handling video bitstream errors in a multimedia gateway device wherein a gateway device detects errors in the incoming video bitstream and sends a signal to the originating device to refresh the bitstream without need of error detection from an end terminating device. When the terminating device signals for the video bitstream to be refreshed, the gateway locally generates and transmits an appropriate refresh frame. The invention allows the gateway to handle errors for devices such as streaming and message servers that have no built-in error handling.04-16-2009
20130121419TEMPORAL LUMINANCE VARIATION DETECTION AND CORRECTION FOR HIERARCHICAL LEVEL FRAME RATE CONVERTER - Systems and methods for the reduction of motion compensation artifacts in a standard or high resolution image interpolation, more specifically to temporal luminance variation, are described. In one innovative aspect, a method of correcting temporal luminance variation (TLV) artifacts during frame rate conversion is provided. The method includes detecting TLV between a first image and a second image based on edge information, TLV characteristics, and motion estimation information. The method further includes determining the location of TLV artifacts in an interpolated image between the first image and the second image. The method also includes modifying the interpolated image based on the determination.05-16-2013
20090003449IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD AND IMAGE DECODING METHOD - An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.01-01-2009
20090141802MOTION VECTOR DETECTING APPARATUS, MOTION VECTOR DETECTING METHOD, AND PROGRAM - A motion vector detecting apparatus includes an evaluation value information forming unit, a motion vector extracting unit, and a motion vector deciding unit. The evaluation value information forming unit is configured to form evaluation value information on motion vectors evaluating that a reference pixel is a potential movement destination candidate for a focus pixel. The evaluation value information on the motion vectors is generated from pixel value correlation information that has been one of generated and limited using a movement direction of the pixels. The motion vector extracting unit is configured to extract motion vectors as candidates from a plurality of motion vectors based on the evaluation value information formed by the evaluation value information forming unit. The motion vector deciding unit is configured to decide motion vectors to be assigned to pixels in a frame from the motion vectors extracted as the candidates by the motion vector extracting unit.06-04-2009
20090201993SYSTEM, METHOD, AND APPARATUS FOR SCALABLE MEMORY ACCESS - Presented herein are system(s), method(s), and apparatus for scalable memory access. In one embodiment, there is presented a system for requesting services. The system comprises one or more requesting node(s) for performing a function with real-time requirements, such as making requests, wherein the one or more requesting node(s) indicates whether each of said requests is required or optional.08-13-2009
20090003446Computing collocated macroblock information for direct mode macroblocks - Video decoding innovations for multithreading implementations and graphics processor unit (“GPU”) implementations are described. For example, for multithreaded decoding, a decoder uses innovations in the areas of layered data structures, picture extent discovery, a picture command queue, and/or task scheduling for multithreading. Or, for a GPU implementation, a decoder uses innovations in the areas of inverse transforms, inverse quantization, fractional interpolation, intra prediction using waves, loop filtering using waves, memory usage and/or performance-adaptive loop filtering. Innovations are also described in the areas of error handling and recovery, determination of neighbor availability for operations such as context modeling and intra prediction, CABAC decoding, computation of collocated information for direct mode macroblocks in B slices, reduction of memory consumption, implementation of trick play modes, and picture dropping for quality adjustment.01-01-2009
20090220004Error Concealment for Scalable Video Coding - A method of deriving replacement block information, such as a replacement motion vector, for a lost or damaged image block in scalable video coding comprises combining information about neighbouring block information in at least the current layer and the corresponding and/or neighbouring blocks in at least one other layer, to derive said replacement block information.09-03-2009
20090220005METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BY USING MULTIPLE REFERENCE-BASED MOTION PREDICTION - Provided are a method and apparatus for encoding an image by using motion prediction and a method and apparatus for decoding an image by using motion prediction. The method of encoding an image by using motion prediction, the method includes: determining at least one candidate predictor set including at least one candidate predictor within a candidate predictor range away from a location of a current predictor in a reference frame; determining a reference predictor based on a distortion rate of hypothesis predictors determined according to the at least one candidate predictor of each of the at least one candidate predictor set; performing motion prediction with regard to a current frame by using a reference block corresponding to the reference predictor and a current block; and encoding image data including the current frame based on a result of the motion prediction.09-03-2009
20090220007VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.09-03-2009
20090220006VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.09-03-2009
20090245375RECURSIVE IMAGE QUALITY ENHANCEMENT ON SUPER RESOLUTION VIDEO - Method and apparatus for improving the quality of super-resolution video imaging by suppressing ringing artifacts, reducing high-frequency noise, reducing blocking artifacts, and smoothing out jagged edges of the image to generate pictures that appear cleaner with less edge degradation. The method operates in a recursive manner within a sequence of low resolution images. Conventional SR processing is primarily enhanced within the invention by adding an artifact suppression section which creates a high frequency component signal ΔSR10-01-2009
20090245374VIDEO ENCODER AND MOTION ESTIMATION METHOD - A video encoder and a motion estimation method are provided. The video encoder comprises a storage unit and an integer motion estimation unit. The storage unit receives a current image block and a plurality of search windows from at least two reference frames. The integer motion estimation unit coupled to the storage unit computes a plurality of integer motion vectors according to the current image block and the plurality of search windows. A number of the reference frames and a size of the search windows are adaptively changed such that space requirement thereof is less than or equal to available space in the storage unit.10-01-2009
20090245381VIDEO ENCODING / DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.10-01-2009
20080260034VIRTUAL DECODED REFERENCE PICTURE MARKING AND REFERENCE PICTURE LIST - An improved system and method for implementing efficient decoding of scalable video bitstreams is provided. A virtual decoded picture buffer is provided for each lower layer of the scalable video bitstream. The virtual decoded picture buffer stores decoded lower layer pictures for reference. The decoded lower layer pictures used for reference are compiled to create a reference picture list for each layer. The reference picture list generated by the virtual decoded picture buffer is used during a direct prediction process instead of a target reference list to correctly decode a current macroblock.10-23-2008
20090316787MOVING IMAGE ENCODER AND DECODER, AND MOVING IMAGE ENCODING METHOD AND DECODING METHOD - A high-compression-ratio encoding and decoding technique is provided which enables random access image reproduction and which can prevent temporary decoding failure. A moving image encoder includes a substitute image generation section which generates a substitute image for a target area to be processed of an input image and a substitute image selection section which outputs information on the substitute image according to a reference image used at a prediction section. When the reference image used at the prediction section is an already encoded image, the substitute image selection section outputs the information on the substitute image to a variable-length encoding section. The variable-length encoding section encodes difference image data from a transform/quantization section into a variable-length code and generates an encoded stream by including the information on the substitute image in the variable-length code.12-24-2009
20090252230Motion estimation device and video encoding device including the same - In a motion estimation device and a video encoding device including the same, a motion estimation device provides a motion vector by performing a motion estimation algorithm, and includes a motion estimation unit including a plurality of processing elements that perform a calculating operation on pixel data of a block of a current frame and reference data in a search area of a reference frame and that output a plurality of operation results on a plurality of candidate blocks in the search area, in parallel; and a comparison and selection unit that compares the operation results provided from the motion estimation unit to each other, and that generates and outputs a motion vector corresponding to the block of the current frame.10-08-2009
20090245376METHOD AND APPARATUS FOR ENCODING/DECODING MOTION VECTOR INFORMATION - A method and apparatus for encoding/decoding motion vector information are provided, in which a coding unit is divided into a plurality of subunits, PMVs of the subunits are calculated, it is determined whether the PMVs satisfy a predetermined condition, and coded motion vector data are generated, which include information indicating an omission of the motion vectors of the subunits, if the PMVs satisfy the predetermined condition.10-01-2009
20090257499ADVANCED INTERPOLATION TECHNIQUES FOR MOTION COMPENSATION IN VIDEO CODING - This disclosure describes various interpolation techniques performed by an encoder and a decoder during the motion compensation process of video coding. In one example, an encoder interpolates pixel values of reference video data based on a plurality of different pre-defined interpolation filters. In this example, the decoder receives a syntax element that identifies an interpolation filter, and interpolates pixel values of reference video data based on the interpolation filter identified by the syntax element. In another example, a method of interpolating predictive video data includes generating half-pixel values based on integer pixel values, rounding the half-pixel values to generate half-pixel interpolated values, storing the half-pixel values as non-rounded versions of the half-pixel values, and generating quarter-pixel values based on the non-rounded versions of the half-pixel values and the integer pixel values.10-15-2009
20090257501INTERPOLATION-LIKE FILTERING OF INTEGER-PIXEL POSITIONS IN VIDEO CODING - This disclosure describes filtering techniques applied by an encoder and a decoder during the prediction stage of a video encoding and/or decoding process. The filtering techniques may enhance the accuracy of predictive data used during fractional interpolation, and may improve predictive data of integer blocks of pixels. There are several aspects to this disclosure, including a useful twelve-pixel filter support that may be used for interpolation, techniques that use coefficient symmetry and pixel symmetry to reduce the amount of data needed to be sent between an encoder and a decoder to configure the filter support for interpolation, and techniques for filtering data at integer pixel locations in a manner that is similar to sub-pixel interpolation. Other aspects of this disclosure concern techniques for encoding information in the bitstream to convey the type of filter used, and possibly the filter coefficients used. Predictive coding of filter coefficients is also described.10-15-2009
20090257498IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus includes: motion vector detection section configured to detect a motion vector of each of a plurality of blocks of a predetermined size set in an image and formed from a plurality of pixels; and global motion calculation section configured to carry out convergence mathematical operation, from the motion vectors of the blocks detected by the motion vector detection section, using extended affine transformation in which at least one of affine parameters is represented by a function of a variable regarding a displacement axis of the image to calculate a global motion representative of deformation applied to the entire image.10-15-2009
20090257497Moving image processing system, encoding device, and decoding device - An encoding device encodes a macroblock based on a determined encoding method. When field predictive encoding is determined, the encoding device performs inter-field predictive encoding to a second field within the same frame by using, as one of reference images a macroblock of a first field within the same encoded frame. A decoding device receives an encoded moving image frame and encoding information, and determines whether each macroblock of a frame to be processed has been encoded by a frame prediction or encoded by a field prediction. The decoding device decodes a macroblock based on a determined encoding method. When field predictive encoding is determined, the decoding device performs field prediction decoding to a macroblock of a second field within the same frame by using as one of reference images a macroblock of a first field within the same decoded frame.10-15-2009
20120140827IMAGE CODING APPARATUS AND IMAGE CODING METHOD - In an image coding apparatus to process a frame image generated by combining a plurality of different images in the side-by-side method as a coding target image, information which specifies an image block in contact with a boundary of the plurality of images is input to the image coding apparatus. A control unit sets a predetermined coding control parameter which reduces or inhibits filtering with a deblocking filter on the image block in contact with the boundary of the plurality of images specified based on the input information.06-07-2012
20090129475Method of processing a current field macroblock - In one embodiment, the method includes determining reference picture index numbers in a reference picture list. The reference picture index numbers increase for reference pictures having a decreasing display order with respect to a picture including the macroblock. The reference picture index numbers increase for reference pictures having an increasing display order with respect to the picture including the macroblock. The reference picture index numbers of the reference pictures having a decreasing display order are less than the reference picture index numbers of the reference pictures having an increasing display order. A field reference picture index associated with the current field macroblock is obtained, and a frame reference picture index is determined based on the field reference picture index. The frame reference picture index is based on the field reference picture index divided by 2. The method further includes selecting a frame reference picture based on the frame reference picture index and the reference picture index number, selecting a field reference picture based on the selected frame reference picture and the field reference picture index, and decoding the current macroblock based on the motion vector information and the selected field reference picture.05-21-2009
20090129474Method and apparatus for weighted prediction for scalable video coding - There are provided scalable video encoders, scalable video decoders, and corresponding scalable video encoding and decoding methods. A scalable video encoder includes an encoder for encoding a block in an enhancement layer of a picture by using a motion vector that corresponds to a block in a lower layer of the picture as a motion vector predictor for the block in the enhancement layer, and using a weighting parameter that was applied to a particular lower layer reference picture to encode the block in the lower layer for motion compensation of the block in the enhancement layer. The block in the enhancement layer corresponds to the block in the lower layer.05-21-2009
20090257500OFFSETS AT SUB-PIXEL RESOLUTION - This disclosure describes techniques applied during video encoding and decoding processes. In one example, a method of encoding video data comprises calculating a plurality of offset values for a coded unit of the video data, wherein the offset values are associated with a plurality of different integer and sub-integer pixel locations, applying the offset values to predictive video blocks to generate offset predictive video blocks, and encoding video blocks of the coded unit based on the offset predictive video blocks. In another example, a method of decoding video data comprises receiving a plurality of offset values for a coded unit of the video data, wherein the offset values are associated with a plurality of different integer and sub-integer pixel locations, applying the offset values to predictive video blocks to generate offset predictive video blocks, and decoding video blocks of the coded unit based on the offset predictive video blocks.10-15-2009
20090316784Device for generating an interpolated frame - The present invention is situated within the frame or video processing domain and more particularly in the domain of video interpolation. It relates to a device for generating an interpolated frame from source frames temporarily surrounding it. This device comprises motion estimation means, motion compensated interpolation means, linear interpolation means, means for mixing the frame produced by the motion compensated interpolation means with the frame produced by the linear interpolation means. According to the invention, the mixing coefficients assigned to these two frames depend on the displaced frame difference and/or the frame difference between the source frames surrounding this interpolated frame and/or estimated motion vectors.12-24-2009
20090316790VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding apparatus comprises a frame memory/predictive image generator having a first predictive mode for generating a predictive image signal by selecting a combination from among a plurality combinations of a reference image number and a plurality of predictive parameters, and a second predictive mode for generating a predictive image signal according to a predictive parameter computed based on reference image numbers of reference images and an image-to-image distance, and a variable-length encoder to select one of the first and second prediction modes by the number of reference images, and encode orthogonal transformation coefficient information concerning a predictive error signal of a predictive image signal with respect to input video signal, mode information indicating an encoding mode, motion vector information and combination of selected reference image number with predictive parameter index information indicating combination of selected reference image information.12-24-2009
20100150242IMAGE DATA DECODING DEVICE AND IMAGE DATA DECODING METHOD - To reduce bandwidth in an image data decoding device including a decoding unit which obtains image data inputted into the image data decoding device and decodes the obtained image data.06-17-2010
20110228852Adaptive Coding Structure and Adaptive FCode Determination in Video Coding - A method of encoding a digital video sequence is provided that includes computing a motion vector (MV) histogram and a motion threshold for a first frame of the digital video sequence, and using the MV histogram and the motion threshold for one selected from a group consisting of adaptive fcode determination and adaptive coding structure determination.09-22-2011
20110228854APPARATUS AND METHOD FOR ENCODING/DECODING A VIDEO SIGNAL - Provided is an apparatus and method for encoding and decoding a video signal. A video signal encoding apparatus may include: a reference image storage unit to store a reference image; a template motion estimation unit to estimate a motion between an input image and the reference image using a template, and to generate motion estimation information; an adaptive motion compensation unit to generate a predicted image using the motion estimation information and the reference image, to calculate a filter coefficient with respect to the predicted image using the template, and to filter the predicted image using the filter coefficient; a transformation and quantization unit to perform integer-transformation and quantization for a differential image that is a difference between the input image and the filtered predicted image; and an entropy encoding unit to entropy encode the quantized differential image and to output an image stream.09-22-2011
20100158128APPARATUS AND METHOD FOR SCALABLE ENCODING - A scalable encoding apparatus that determines a motion mode of an enhanced layer using motion information of a base layer in a scalable video coding having a structure of the base layer and the enhanced layer. The scalable encoding apparatus includes: a second image detector that detects a current image frame from images input to the enhanced layer; a second motion detector that assigns weight to motion modes of a macro block and macro blocks adjacent to the macro block of the current image frame based on motion mode information and motion vector information obtained from the current image frame of the BASE LAYER, determines motion modes for the current image frame of the enhanced layer by applying the weight and comparing a sum of calculated mode values and a plurality of thresholds, and detects the corresponding motions; and a second motion compensator that compensates the motions detected in the second motion detector to compress the current image frame.06-24-2010
20100158124FILTER PROCESS IN COMPRESSION/DECOMPRESSION OF DIGITAL VIDEO SYSTEMS - A method for calculating pixel values of interpolated pixel positions located between integer pixel positions in frames of a video picture by a predefined filter operation, the method including: storing the pixel values of the integer pixel position; determining to which of a number of predefined resolution formats the video picture is adapted; defining a fixed width (W) and fixed height value (H) for the frames corresponding to a resolution format determined by the determining; loading a first set of memory addresses for the memory of the video processing apparatus corresponding to a plurality of the pixel values of integer pixel positions; and executing a filter operation on the plurality of the pixel values of integer pixel positions and calculating a plurality of the pixel values of the interpolated pixel positions.06-24-2010
20120140828MOTION VECTOR DERIVATION METHOD, MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - A motion vector derivation unit includes a comparison unit for comparing a parameter TR06-07-2012
20090116555IMAGE ENCODING APPARATUS, METHOD OF CONTROLLING THE SAME, AND COMPUTER PROGRAM - An image encoding apparatus which encodes picture data is provided. The apparatus comprises an encoding unit configured to encode a picture to be encoded; a decoding unit configured to decode the encoded picture; an SN ratio calculation unit configured to calculate an SN ratio using the picture to be encoded and a decoding result of the decoding unit; a setting unit configured to set a target SN ratio serving as an index of the SN ratio; a bitrate control unit configured to control a bitrate of the picture to be encoded based on the target SN ratio; and a motion detection unit configured to detect motion information between the picture to be encoded and another picture, wherein the bitrate control unit controls the bitrate based on the motion information, and a difference between the SN ratio and the target SN ratio.05-07-2009
20100183076Encoding Images - Techniques, apparatus and computer readable storage media are described for encoding images in a video. In one aspect, a method performed by an encoding device to encode a video is described. The method includes sequentially performing a motion estimation operation and an encoding operation, which includes determining an operation mode of the motion estimation operation based on a quantity of calculations for the encoding operation. Sequentially performing a motion estimation operation and an encoding operation include performing the motion estimation operation with respect to an image of the video based on the determined operation mode. Additionally, sequentially performing a motion estimation operation and an encoding operation includes performing the encoding operation based on a result of the motion estimation operation.07-22-2010
20100183071Methods and Systems for Enhanced Dynamic Range Images and Video from Multiple Exposures - Aspects of the present invention relate to systems and methods for video coding and decoding. Some aspects relate to coding and decoding of enhanced dynamic range video sequences based on a series of low-dynamic-range (LDR) frames, captured at a first exposure configuration, that are multi-plexed with a series of enhancement frames that are captured at a second exposure configuration.07-22-2010
20100183072Image Processing Apparatus, Image Processing Method, and Program - There is provided an image processing apparatus including a an acquiring unit for acquiring moving image data containing a plurality of successive frames, and one or a plurality of image data corresponding to the frames and having a spatial resolution higher than the frames; a motion prediction unit for detecting a motion vector between the frames using the moving image data; a difference amount calculation unit for calculating a difference amount between a predetermined frame and the frame corresponding to the image data; and an image generation unit capable of generating motion compensated image data corresponding to the predetermined frame based on the frame corresponding to the image data and the motion vector.07-22-2010
20090116558Motion skip and single-loop encoding for multi-view video content - A system, method and computer program tangibly embodied in a memory medium for implementing motion skip and single-loop decoding for multi-view video coding. In various embodiments, a more efficient motion skip is used for the current JMVM arrangement by 8×8 or 4×4 pel disparity motion vector accuracy, while maintaining the motion compensation process that is compliant with the H.264/AVC design regarding hierarchical macroblock partitioning. Adaptive referencing merging may be used in order achieve a more accurate motion skip from one inter-view reference picture. In order to indicate whether a picture is to be used for motion skip, a new syntax element or syntax modification in the NAL unit header may be used.05-07-2009
20090116556DIGITAL IMAGE DECODING APPARATUS AND DIGITAL IMAGE DECODING METHOD - A digital image decoding apparatus which decodes coded data using plurality of motion vectors in each block obtained by dividing an image in frame into a plurality of blocks. The digital image decoding apparatus comprises an error detection unit which detects an error of the block, a decoder which decodes the coded data to generate the motion vector, a motion vector setting unit which computes the motion vector of the block based on the motion vector generated by the decoder and sets the computed motion vector at the block, and a motion compensating decoder which performs motion compensating decoding using the motion vector set by the motion vector setting unit. The decoder generates a reference image motion vector by decoding the coded data of the image which motion compensation is performed to and used as a reference image. When the error detection unit detects the error in the block of the image to which the motion compensation is not performed, the motion vector setting unit computes the motion vector of the block of the image to which the motion compensation is not performed based on the reference image motion vector generated by the decoder, and sets the computed motion vector at the block of the image to which the motion compensation is not performed.05-07-2009
20090116554HIGH-PERFORMANCE VIDEO TRANSCODING METHOD - Disclosed is an apparatus (05-07-2009
20090116553Method of processing a current field macroblock - In one embodiment, the method includes obtaining a reference picture list including multiple reference pictures, obtaining motion vector information for the current field macroblock, and obtaining a field reference picture index associated with the current field macroblock. A frame reference picture index is determined based on the field reference picture index. The frame reference picture index is based on the field reference picture index divided by 2. The embodiment further includes selecting a frame reference picture based on the frame reference picture index and the reference picture list, selecting a field reference picture based on the selected frame reference picture and the field reference picture index, and decoding the current macroblock based on the motion vector information and the selected field reference picture.05-07-2009
20100189179VIDEO ENCODING USING PREVIOUSLY CALCULATED MOTION INFORMATION - A video encoder uses previously calculated motion information for inter frame coding to achieve faster computation speed for video compression. In a multi bit rate application, motion information produced by motion estimation for inter frame coding of a compressed video bit stream at one bit rate is passed on to a subsequent encoding of the video at a lower bit rate. The video encoder chooses to use the previously calculated motion information for inter frame coding at the lower bit rate if the video resolution is unchanged. A multi core motion information pre-calculation produces motion information prior to encoding by dividing motion estimation of each inter frame to separate CPU cores.07-29-2010
20100158127METHOD OF FAST MODE DECISION OF ENHANCEMENT LAYER USING RATE-DISTORTION COST IN SCALABLE VIDEO CODING (SVC) ENCODER AND APPARATUS THEREOF - A method of fast mode decision of an enhancement layer using a bitrate-distortion cost in an SVC encoder includes: calculating a bitrate-distortion cost for a current macro block of an enhancement layer and a bitrate-distortion cost for a previous macro-block of the current macro block of an enhancement layer based on an optimal motion mode and an motion vector for a macro block of a base layer of a current frame; correcting the bitrate-distortion cost for the previous macro block calculated at the calculating by a correction value for reflecting relationship with the previous frame to calculate a final bitrate-distortion cost for the previous macro block; and comparing the bitrate-distortion cost for the current macro block calculated at the calculating with the final bitrate-distortion cost calculated at the correcting and selecting a motion mode that will be removed from the current macro block according to the comparison result.06-24-2010
20100296582IMAGE CODING DEVICE AND IMAGE CODING METHOD - An image coding device (11-25-2010
20100296580METHOD AND SYSTEM FOR EFFICIENT VIDEO TRANSCODING - A method and system for an efficient transcoding of a sequence of input images in a first format to a sequence of output images in a second format are described. The method utilizes the encoding block mode, the motion vectors and the residual information extracted during the decoding of the input image that are effectively reused to select an optimal transcoding block mode and to perform selective refinement of motion vectors. A corresponding system for video transcoding is also provided.11-25-2010
20100189180QUANTIZATION FOR HYBRID VIDEO CODING - Method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal; performing quantization on samples of the prediction error signal or on coefficients resulting from a transformation of the prediction error signal into the frequency domain to obtain quantized values, representing quantized samples or quantized coefficients respectively; calculating a quantization efficiency for the quantized values; calculating a zero efficiency for a quantization, when the quantized values are set to zero; selecting the higher efficiency; and maintaining the quantized values or setting quantized values to zero, for further proceeding, depending on the selected efficiency.07-29-2010
20100177824Method and apparatus for processing a video signal - An apparatus for processing a video signal and method thereof are disclosed, by which duplication of inter-view pictures is eliminated to decode the video signal, by which a global motion vector of a current picture is generated based on relevance between inter-view pictures to decode the video signal, and by which motion information for a current picture is obtained based on relevance between inter-view pictures to perform motion compensation. The present invention includes extracting attribute information for a current block or attribute information for a current picture from the video signal, extracting motion skip information for the current block, and generating motion information for the current block using motion information for a reference block according to the attribute information and the motion skip information.07-15-2010
20100226435SYSTEM AND METHOD FOR FRAME RATE CONVERSION THAT UTILIZES MOTION ESTIMATION AND MOTION COMPENSATED TEMPORAL INTERPOLATION EMPLOYING EMBEDDED VIDEO COMPRESSION - A technique for frame rate conversion that utilizes motion estimation and motion compensated temporal interpolation includes obtaining a first image and a second image, where the first and second images correspond to different instances in time, compressing the second image using multiple motion vectors that result from motion estimation between the first image and the second image to generate a compressed image, and generating an interpolated image using the compressed image.09-09-2010
20100226437REDUCED-RESOLUTION DECODING OF AVC BIT STREAMS FOR TRANSCODING OR DISPLAY AT LOWER RESOLUTION - A method of and system for reducing complexity for transcoding Advanced Video Coding (AVC) videos is described herein. Transcoding from higher resolution signals to lower resolution signals or to signals for a lower resolution display is implemented. The complexity is reduced by decoding the AVC video at reduced horizontal and/or vertical resolution. This results in the reduction of computation cost for decoding and re-sampling the AVC video to lower resolution.09-09-2010
20100177825MOTION ESTIMATION TECHNIQUE FOR DIGITAL VIDEO ENCODING APPLICATIONS - The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails. The encoder then selects an inter encoding mode for coding the current macroblock, when the first local search is successful, otherwise the encoder selects the inter or intra encoding mode for encoding the current macroblock by comparing variances of the original and difference macroblocks.07-15-2010
20100177826MOTION ESTIMATION TECHNIQUE FOR DIGITAL VIDEO ENCODING APPLICATIONS - The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails. The encoder then selects an inter encoding mode for coding the current macroblock, when the first local search is successful, otherwise the encoder selects the inter or intra encoding mode for encoding the current macroblock by comparing variances of the original and difference macroblocks.07-15-2010
20100239023Methods for efficient implementation of skip/direct modes in digital video compression algorithms - A method for selecting a picture prediction mode from a candidate pool of picture prediction modes for video compression takes advantage of similarity in implementation between SKIP and DIRECT modes and one other inter-picture prediction modes, namely, the 16×16 partition mode. The SKIP/DIRECT modes are considered if and only if the final prediction information of the 16×16 partition mode, including motion vector, reference picture index, and prediction direction, is the same as that of the respective SKIP and/or DIRECT modes. The same motion prediction, reference picture index and prediction direction are used for the 16×16 partition mode and the SKIP/DIRECT modes, and therefore, the same interpolation scheme can be used for both SKIP/DIRECT and 16×16 partition modes.09-23-2010
20110110430METHOD FOR MOTION ESTIMATION IN MULTIMEDIA IMAGES - The present invention relates to a method for motion estimation in multimedia images, which comprises steps of: dividing a predict image frame into a plurality of groups of macroblocks, and each of the groups of macroblocks including a plurality of macroblocks; predicting a motion vector of each of the groups of macroblocks, and producing a predict motion vector; producing one or more search windows according to the predict motion vector; and comparing a plurality of pixels in each macroblock of each group of macroblocks to a plurality of pixels in the search window, and producing an actual motion vector, respectively. Thereby, by gathering a plurality of macroblocks, a shared predict motion vector is produced for reducing computations in coding. Hence, the coding efficiency can be enhanced.05-12-2011
20100220791Video coding and decoding method and codex based on motion skip mode - A video coding method based on a motion skip mode (MSM) is provided. The method includes the following steps. A corresponding reference block of a current macro block to be encoded in a view-point reference image is determined, according to a direction of a disparity vector from a current image relative to the view-point reference image deduced by using a block smaller than 16×16 pixels as a base unit. The current macro block to be encoded is then encoded according to motion information of a macro block that the determined corresponding reference block belongs to. Other related video coding methods and corresponding codecs based on the MSM are also provided. Therefore, macro block motion information (MMI) of the currently encoded macro block at a corresponding position in the view-point reference image can be more accurately obtained, thereby improving a coding efficiency of the MSM.09-02-2010
20100239019POST PROCESSING OF MOTION VECTORS USING SAD FOR LOW BIT RATE VIDEO COMPRESSION - A method and system for detecting and replacing spurious motion vectors in video signal compression includes determining whether a motion vector of a current macroblock is spurious by comparing the motion vector with motion vectors of motion vectors of neighbouring macroblocks; and replacing the motion vector as spurious if the difference exceeds a predetermined threshold. In particular, the method and system seeks to determine (09-23-2010
20100239020VIDEO ENCODING/DECODING METHOD AND APPARATUS FOR MOTION COMPENSATION PREDICTION - A video encoding method and apparatus to select one combination, for each block of an input video signal, from a plurality of combinations. Each combination includes a predictive parameter and at least one reference picture number determined in advance for the reference picture. A prediction picture signal is generated in accordance with the reference picture number and predictive parameter of the selected combination. A predictive error signal is generated representing an error between the input video signal and the prediction picture signal. Encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination is included.09-23-2010
20100239015METHOD AND APPARATUS FOR DETERMINING EXPECTED DISTORTION IN DECODED VIDEO BLOCKS - There are provided methods and apparatus for determining expected distortion in decoded video blocks. An apparatus includes a distortion calculator for calculating an expected distortion for an image block, included in a picture of a video sequence and sent over a lossy channel, using a motion vector for the image block when the motion vector has a non-integer value. The distortion calculator calculates the expected distortion based upon a propagated distortion of at least two neighboring integer pixel positions in a reference picture with respect to the motion vector having the non-integer value. The image block is coded in an inter mode or a SKIP mode.09-23-2010
20100239016CODING SCHEME FOR IDENTIFYING SPATIAL LOCATIONS OF EVENTS WITHIN VIDEO IMAGE DATA - An invention for generating a coding schema for identifying a spatial location of an event within video image data is provided. In one embodiment, there is a spatial representation tool, including a compression component configured to receive trajectory data of an event within video image data, generate a lossless compressed contour-coded blob to encode the trajectory data of the event within video image data, and generate a lossy searchable code to enable searching of a relational database based on the trajectory data of the event within the video image data.09-23-2010
20100239021VIDEO ENCODING/DECODING METHOD AND APPARATUS FOR MOTION COMPENSATION PREDICTION - A video encoding method and apparatus to select one combination, for each block of an input video signal, from a plurality of combinations. Each combination includes a predictive parameter and at least one reference picture number determined in advance for the reference picture. A prediction picture signal is generated in accordance with the reference picture number and predictive parameter of the selected combination. A predictive error signal is generated representing an error between the input video signal and the prediction picture signal. Encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination is included.09-23-2010
20100239022VIDEO ENCODING/DECODING METHOD AND APPARATUS FOR MOTION COMPENSATION PREDICTION - A video encoding method and apparatus to select one combination, for each block of an input video signal, from a plurality of combinations. Each combination includes a predictive parameter and at least one reference picture number determined in advance for the reference picture. A prediction picture signal is generated in accordance with the reference picture number and predictive parameter of the selected combination. A predictive error signal is generated representing an error between the input video signal and the prediction picture signal. Encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination is included.09-23-2010
20100226440IMAGE ENCODING DEVICE, IMAGE ENCODING CONTROL METHOD, AND PROGRAM - An image encoding control method for controlling processing for encoding data of an input moving image based on an interlace system comprises: a step of determining whether or not a chrominance-component motion vector generated based on the luminance-component motion specifies a reference prohibition region preset at least one of outside an upper boundary and outside a lower boundary of the reference image, for each combination of a field type of the region to be encoded and the field type of the reference image; and a step of prohibiting, when the chrominance-component motion vector generated based on the luminance-component motion vector specifies the reference prohibition region, the luminance-component motion vector from being output as a motion vector specifying a region that is most similar to the region to be encoded.09-09-2010
20100226439IMAGE DECODING APPARATUS AND IMAGE DECODING METHOD - An image decoding apparatus that performs decoding using motion compensation includes: a reference area specifying unit that specifies, prior to decoding performed on a block-by-block basis, a reference area that is an existing range of reference pixels in a reference picture based on a block on which motion compensation is to be performed; a decoded pixel memory which stores decoded pixel data; a reference pixel buffer that holds reference pixel data; a reference-pixel-reading control unit that copies pixel data of an area including the reference area specified by said reference area specifying unit, from said decoded pixel memory into said reference pixel buffer; a motion compensation unit that generates interpolation pixel data by performing the motion compensation using reference pixel data copied into said reference pixel buffer; and a pixel value decoding unit that generates decoded pixel data using the interpolation pixel data.09-09-2010
20100226438Video Processing Systems, Methods and Apparatus - Video compression and decompression that produces a desirable balance of compression rate and picture quality while, at the same time, reducing an average number of computational cycles required to achieve the desired picture quality and compression rate. Also disclosed are video processing platforms, systems and methods that produce a quality and bits per frame performance for more widespread use of video data exchanges using standardized computer architectures, such as cellular phones having non-video optimized processing platforms.09-09-2010
20100254461METHOD AND DEVICE FOR DIGITAL VIDEO ENCODING, CORRESPONDING SIGNAL AND COMPUTER-PROGRAM PRODUCT - Digital video image sequences including slices of macroblocks are encoded by adopting a direct prediction mode, motion-compensated on the basis of motion vectors, chosen from between a direct spatial prediction in which the motion vectors of a given macroblock are obtained from the motion vectors of the macroblocks already encoded within one and the same image, and a direct temporal prediction, in which the motion vectors of a given macroblock are obtained from the motion vectors of the macroblocks belonging to a previously encoded image.10-07-2010
20100220790 METHOD AND AN APPARATUS FOR PROCESSING A VIDEO SIGNAL - An apparatus for processing a video signal and method thereof are disclosed. The present invention includes receiving prediction mode information, interpolating information and a residual of a current block, reconstructing an interpolating pixel using the interpolating information and a neighbor block, and reconstructing the current block using the interpolating pixel, the prediction mode information and the residual, wherein the interpolating information is generated based on a location of the current block. According to an apparatus and method for processing a video signal, high reconstruction rate can be obtained by improving the related art method having limited intra prediction modes available for a current block located on a boundary area of a picture in encoding in a manner of reconstructing and using an interpolating pixel based on interpolating information.09-02-2010
20110058613METHOD AND APPARATUS FOR GENERATING BITSTREAM BASED ON SYNTAX ELEMENT - A method and apparatus for generating an optimized bitstream. In the method, a bitstream including first and second processing units is received. The video processing units are encoded to generate syntax data for syntax elements of the video processing units. The syntax data of the video processing units are grouped according to the type of syntax element, and the groups are arranged in a predetermined order to produce the optimized bitstream.03-10-2011
20110058611VIDEO ENCODING APPARATUS, VIDEO ENCODING METHOD, VIDEO ENCODING PROGRAM, VIDEO DECODING APPARATUS, VIDEO DECODING METHOD AND VIDEO DECODING PROGRAM - In the motion compensation prediction unit 03-10-2011
20100239018VIDEO PROCESSING METHOD AND VIDEO PROCESSOR - A video processing method and a video processor are disclosed. The video processor includes a processing device, and the video processor is coupled to a buffer. The video processor reads a plurality of current frames to be coded and a plurality of search windows, and performs motion estimation on a plurality of macroblocks (MBs), wherein the MBs are co-located within the current frames to be coded and the current frames to be coded have no data dependence on each other.09-23-2010
20100239017MOTION ESTIMATOR AND A MOTION ESTIMATION METHOD - A motion estimation method includes: (A) defining one pixel in a reference image as a center of search (CS) corresponding to a target pixel set in a current image; (B) determining a center error (CE) signal; (C) defining another pixel in the reference image as a target of search (TS) with reference to the CS, one candidate search vector available for selection from a vector set, and a step size; (D) determining a target error (TE) signal; (E) determining whether to update the CS and the CE signal; (F) if determined, updating the CS, the CE signal and the vector set; (G) repeating steps (C)˜(F) using a candidate search vector selected from the vector set and the same step size until there is no candidate search vector available for selection in the vector set; (H) repeating steps (C)˜(G) using a smaller step size until a predetermined value is reached; and (I) computing a motion vector based on the target pixel set and one pixel set that includes the CS.09-23-2010
20100220788VIDEO CODING METHOD AND VIDEO DECODING METHOD - A video coding method and a video coding device can optimize prediction efficiency and coding efficiency.09-02-2010
20100254460INFORMATION PROCESSING APPARATUS AND METHOD - An information processing apparatus includes: a synthesis filter unit configured to execute synthesis filtering for coefficient data of each subband, obtained by decoding a code stream of a reversibly-encoded image and performing band division, in each predetermined number of lines or in each predetermined block to obtain baseband image data on a line basis; a storage unit configured to store the baseband image data obtained by the synthesis filter unit; an analysis filter unit configured to read the baseband image data stored in the storage unit and execute analysis filtering for the image data to divide the image data up to a predetermined division level; and a control unit configured to control the analysis filter unit to execute analysis filtering as soon as the amount of the baseband image data stored in the storage unit reaches a data amount allowing analysis filtering.10-07-2010
20100220787Video encoding and decoding apparatus, method, and system - A video sequence is encoded by encoding key frames to obtain coded data and non-key frames to obtain error-correcting information. In the encoding process, key frame data are stored in a buffer, first motion information pertaining to the key frames is obtained, and the first motion information is applied to the stored key frame data to generate predicted key frame data. Second motion information pertaining to the non-key frames is also obtained and used to generate predicted non-key frame data. Either the first motion information is obtained from the second motion information, or the second motion information is obtained from the first motion information. The encoder accordingly does not have to obtain motion information from the decoder, and can estimate the amount of error-correcting information to send to the decoder.09-02-2010
20090175346Method of decoding a macroblock based on a macroblock level of the macroblock - In one embodiment, the method includes obtaining a first reference frame picture list and a second reference frame picture list including multiple reference frame pictures respectively. A reference frame picture index is determined based on display order information for the multiple reference frame pictures. The method further includes obtaining first motion vector information and second motion vector information for the macroblock and obtaining a first reference field picture index and a second reference field picture index associated with the macroblock. First and second reference frame pictures are determined. First and second reference field pictures are selected. The macroblock is decoded based on the first and second motion vector information and the selected first and second reference field pictures.07-09-2009
20100135404RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - An image decoder, wherein the motion compensation is performed with half-pixel accuracy and uses bilinear interpolation to calculate intensity values of chrominance or luminance at points where no pixels actually exist in the reference image, the bilinear interpolation being performable using a positive rounding method and a negative rounding method; wherein the bilinear interpolation is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; and wherein the rounding method information is included in a header section of the coded information of the currently decoded image.06-03-2010
20100135399METHOD AND SYSTEM FOR OBTAINING MOTION VECTORS AND BOUNDARY STRENGTHS OF AN IMAGE - A method and a system for obtaining motion vectors and boundary strengths of an image are disclosed. The method comprises the steps of: S06-03-2010
20100142619APPARATUS AND METHOD FOR PROCESSING IMAGE - An asynchronous IDR detecting unit detects occurrence of scene change and, upon noticing that at the scene change superiority and inferiority of image quality can hardly be recognized by a human eye and a high-image-quality interpolation frame cannot be generated, a frame interpolation process controlling unit controls a frame interpolation unit to generate an interpolation frame by a simplified process before and after a case where a frame including the scene change (aperiodic IDP frame) is detected (necessity of frame interpolation is small) or generate a high-image-quality interpolation frame in the other case (a case where necessity of the frame interpolation is great).06-10-2010
20100220789COMBINED SPATIAL AND BIT-DEPTH SCALABILITY - Various implementations are described. Several implementations relate to combined scalability. One method is for encoding a combined spatial and bit-depth scalability. The method includes encoding a source image of a base layer macroblock. The method also includes and encoding a source image of an enhancement layer macroblock by performing an inter-layer prediction. The source image of the base layer and the source image of the enhancement layer differ from each other both in spatial resolution and color bit-depth.09-02-2010
20100135412MEDIA CODING FOR LOSS RECOVERY WITH REMOTELY PREDICTED DATA UNITS - An improved loss recovery method for coding streaming media classifies each data unit in the media stream as an independent data unit (I unit), a remotely predicted unit (R unit) or a predicted data unit (P unit). Each of these units is organized into independent segments having an I unit, multiple P units and R units interspersed among the P units. The beginning of each segment is the start of a random access point, while each R unit provides a loss recovery point that can be placed independently of the I unit. This approach separates the random access point from the loss recovery points provided by the R units, and makes the stream more impervious to data losses without substantially impacting coding efficiency. The most important data units are transmitted with the most reliability to ensure that the majority of the data received by the client is usable. The I units are the least sensitive to transmission losses because they are coded using only their own data. While they provide the best coding efficiency, the P units are the most sensitive to data loss because the loss of one P unit renders useless all of the P units that depend on it. The remotely predicted units are dependent on the I unit, or in an alternative implementation, on another R unit.06-03-2010
20100124282VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-20-2010
20120140826METHOD AND DEVICE FOR PROCESSING PIXELS CONTAINED IN A VIDEO SEQUENCE - An embodiment of the present invention relates to a method for processing the pixel amplitude of at least one image pixel contained in a current frame of a video sequence, said method comprising the steps of constructing an individual motion trajectory comprising motion-shifted versions of the at least one image pixel over a plurality of neighboring frames, and processing the pixel amplitude based on the individual motion trajectory; wherein said step of constructing said individual motion trajectory comprises the steps of: 06-07-2012
20100034273Method for predicting a lost or damaged block of an enhanced spatial layer frame and SVC-decoder adapted therefore - The invention is related to prediction of a lost or damaged block of an enhanced spatial layer frame.02-11-2010
20090285302MOVING PICTURE ENCODING APPARATUS AND METHOD, MOVING PICTURE DECODING APPARATUS AND METHOD - A prediction mode is selected in accordance with a type of a moving picture. When an interframe prediction mode is selected as the prediction mode, a motion vector for the moving picture is detected. Motion compensation for the moving picture is performed based on the type of the moving picture, the prediction mode, and the motion vector. A spatial prediction section performs a spatial prediction for the moving picture based on the type of the moving picture and the prediction mode. An orthogonal transformation for a predictive residue signal obtained as a difference between the picture signal obtained by the motion compensation or the spatial prediction and the input picture signal is performed, based on the type of the moving picture and the prediction mode. Variable length encoding for the picture data after the orthogonal transformation is performed, based on the type of the moving picture and the prediction mode.11-19-2009
20090041124IMAGE CODING APPARATUS AND METHOD - The image coding apparatus comprises: a decoding unit 02-12-2009
20100266045ADAPTIVE REAL-TIME VIDEO PREDICTION MODE METHOD AND COMPUTER-READABLE MEDIUM AND PROCESSOR FOR STORAGE AND EXECUTION THEREOF - A method of determining an adaptive early skip indication (ESI) threshold during block motion compensation encoding of digital video data is disclosed. The method includes setting an ESI threshold minimum value below which no degradation in the block motion compensation encoding occurs; setting an ESI threshold maximum value above which degradation in the block motion compensation encoding is considered unacceptable; determining that a processor load state of the processor during block motion compensation encoding is one of an overloaded state, a normal loaded state, and an under loaded state; when the processor load state is determined to be in an overloaded state, increasing the adaptive ESI threshold to a value below the ESI threshold maximum value thereby decreasing a number of macroblocks in the digital video data that are block motion compensation encoded; when the processor load state is determined to be in a normal loaded state, maintaining the adaptive ESI threshold at its current value; and when the processor load state is determined to be in an under loaded state, decreasing the adaptive ESI threshold to a value above the ESI threshold minimum value thereby increasing a number of macroblocks in the digital video data that are block motion compensation encoded. A block motion compensation encoding devices is also disclosed that implements the method above. A computer readable medium is also disclosed that stores instructions, which when executed by a processing unit, performs the method above.10-21-2010
20100266044EFFICIENT DATA PREDICTION AND DATA REUSE MOTION ESTIMATION ENGINE FOR SYSTEM-ON-CHIP DESIGN - A data reading method for motion estimation in an embedded system is provided. The embedded system includes an external memory device and a video encoding device, wherein the external memory device stores a first frame, and the video encoding device has an internal memory. First, a second frame is divided into M×N sub frame sets, wherein each of the sub frame sets has O×P sub frames. Then, each of the sub frame sets is selected in a calculation sequence, and the selected sub frame set is stored into the internal memory. Next, a predicted search path of each sub frame in the selected sub frame set is calculated. Thereafter; a predicted reading range is determined, wherein the predicted reading range includes the predicted search paths of the sub frames. Finally, a comparison data is read from the first frame according to the predicted reading range.10-21-2010
20090074072MOVING IMAGE CODING APPARATUS - A moving image coding apparatus includes a motion vector search unit configured to read coding target image data and reference image data which are stored in a memory, and search a motion vector. The motion vector search unit reads the coding target image data in multiple units of N horizontal pixels (N is an integer of 2 and more) and 1 vertical pixel and reads the reference image data in multiple units of P horizontal pixels (P is an integer of 2 and more) and Q vertical pixels (Q is an integer of 2 and more) from the memory.03-19-2009
20090074071Apparatus and Method for Image Processing and Computer Program - An image processing apparatus includes the following elements. A local motion vector estimation unit estimates a local motion vector associated with each of blocks, serving as segments of an image frame constituting a moving image. A block weight calculation unit calculates a block weight as an index of the reliability of a local motion vector for each block. A global motion vector estimation unit receives the local motion vectors and the weights to estimate a global motion vector as a motion vector common to the blocks in the frame. The global motion vector estimation unit calculates, as a cost, the sum of the products of the differences between the local motion vectors associated with the respective blocks and the global motion vector and the block weights assigned to the respective blocks subjected to difference calculation and calculates parameters of the global motion vector which minimize the cost.03-19-2009
20090074070Method and Apparatus for Slice Adaptive Motion Vector Coding for Spatial Scalable Video Encoding and Decoding - There are provided spatial scalable video encoder and decoders and corresponding methods for scalable video encoding and decoding. A method for spatial scalable video encoding includes selecting between scalable coding and non-scalable coding of motion vectors on a slice basis.03-19-2009
20110176613Motion Prediction Method and Video Encoding Method - The invention provides a motion prediction method. First, a plurality of motion vector predictors is obtained to be included in a candidate set for motion prediction of a current unit of a current frame. Whether the current frame is a non-reference frame which is not referred to by other frames for motion prediction is then determined. When the current frame is not the non-reference frame, any motion vector predictor corresponding to a previously coded frame is removed from the candidate set, and a motion vector of the current unit is predicted according to the motion vector predictors of the candidate set.07-21-2011
20090252229IMAGE ENCODING AND DECODING - An improved MPEG adaptive reference fine granularity scalability encoder and decoder is described. The parameters α and β used to weight difference data during the generation of a prediction error signal in an enhancement layer are modified in dependence upon the magnitude of the values in the difference data.10-08-2009
20090323810VIDEO ENCODING APPARATUSES AND METHODS WITH DECOUPLED DATA DEPENDENCY - The invention provides an apparatus for video encoding with decoupled data dependency. In one embodiment, the apparatus comprises a buffer, a hardware circuit, and a parameter determination module. The hardware circuit, coupled to the buffer, generates and stores data during performing motion estimation on a current frame and encoding a plurality of macroblocks of the current frame in the buffer. The parameter determination module, coupled to the hardware circuit and the buffer, retrieves the stored data from the buffer, generates at least one reference parameter for a plurality of macroblocks of a future frame according to the retrieved data, and updates data of the buffer with the generated reference parameters after receiving a triggering signal indicating start of data preparation for the future frame from the hardware circuit.12-31-2009
20090323808METHOD AND APPARATUS FOR MOTION COMPENSATED FILTERING OF VIDEO SIGNALS - A method and apparatus for filtering video data. First and second frames of the video data are stored. Motion adapted spatio-temporal filter (MASTF) pixel values of the second frame are calculated using pixel values of the first and second frames. The second frame is compared to the first frame to estimate motion vectors (MVs) for the second frame. Pixel MV error level indicators for the second frame are determined using the pixel values of the first and second frames and the MVs of pixels in the second frame. Motion compensated temporal filter (MCTF) pixel values of the second frame are calculated using the pixel values of the first and second frames and the MVs of pixels in the second frame. For each pixel in the second frame, a filtered pixel value is calculated using its MASTF and MCTF pixel values and its pixel MV error level indicator.12-31-2009
20110032992METHOD AND APPARATUS FOR H.264 TO MPEG-2 VIDEO TRANSCODING - A method for transcoding from an H.264 format to an MPEG-2 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the H.264 format to generate a picture having a plurality of macroblock pairs that used an H.264 macroblock adaptive field/frame coding; (B) determining a mode indicator for each of the macroblock pairs; and (C) coding the macroblock pairs into an output video stream in the MPEG-2 format using one of (i) an MPEG-2 field mode coding and (ii) an MPEG-2 frame mode coding as determined from the mode indicators.02-10-2011
20090147852Spatial Filtering of Differential Motion Vectors - Embodiments include a video data encoding method comprising receiving video input frames, and performing motion estimation on the video received frames. The motion estimation comprises performing a hierarchical motion search to find motion vectors with optimum sum of absolute difference (SAD) values, and performing spatial filtering of the motion vectors, wherein spatial filtering comprises making some pairs of motion vectors the same to achieve a zero differential.06-11-2009
20090316786MOTION ESTIMATION AT IMAGE BORDERS - An estimated motion vector within image signals to obtain robust motion vectors is provided by creating at least one candidate motion vector for at least one current block within an image of the signal, determining for each of said candidate motion vectors at least one match block within at least one image which is temporally neighboring the image of the current block, detecting if the at least one match block lies at least partially outside the active area of the image, then candidate motion vector is calculated based on at least the shifted current block and the shifted match block and shifting at least the current block and the match block such that the match block lies within the active area of the image.12-24-2009
20090110077IMAGE CODING DEVICE, IMAGE CODING METHOD, AND IMAGE CODING INTEGRATED CIRCUIT - When compression encoding processing of an image is performed in units of macroblocks using pipeline structure, application of the skip mode or the like according to MPEG4AVC to compression encode an encoding target block requires motion vectors and the like of adjacent blocks of the encoding target block. However, depending on the structure of the pipeline stages, the motion vectors and the like may not be determined. In such cases, the skip mode cannot be applied to compression encode the encoding target block. The present invention aims to solve this problem and (i) calculates all motion information candidates, of the encoding target block, corresponding to all motion information selectable by a previous block of the encoding target block, and (ii) selects, as the motion information of the encoding target block in the skip mode, the motion information corresponding to the motion information determined for the previous block.04-30-2009
20090110076Method and System for Optical Flow Based Motion Vector Estimation for Picture Rate Up-Conversion - Certain aspects of a method and system for optical flow based motion vector estimation for picture rate up-conversion (PRUC) may include generating one or more motion vectors based on extracted picture rate up-conversion (PRUC) data by minimizing a cost function. The cost function may be constrained by any combination of a block matching constraint, a smoothness constraint and a bias constraint. The PRUC data may be extracted from a compressed video data stream while the compressed video data stream is being decompressed by a video decompression engine. The PRUC data may comprise local block motion vectors, block coding modes, quantization levels, quantized residual data and decoded pictures. A plurality of interpolated pictures may be generated based on extracting the PRUC data.04-30-2009
20090034618DECODING METHOD AND APPARATUS FOR BLOCK-BASED DIGITALLY ENCODED PICTURE - A decoding method for block-based digital encoded picture is disclosed. The method including the steps of reconstructing a zeroth reference picture list and a first reference picture list for a current picture based on a predetermined digital picture coding protocol; establishing a lookup table which includes a parameter field for storing a distance scalar, the distance scalar being derived from the time sequence characteristic values of the current picture, the co-located picture and a predetermined reference picture; determining a derived motion vector of a direct mode bi-predictive block according to the distance scalar and a predetermined motion vector of a co-located block with respect to the predetermined reference picture. An apparatus for implementing the method is also disclosed.02-05-2009
20130128978METHODS FOR ENCODING/DECODING OF VIDEO USING COMMON MERGING CANDIDATE SET OF ASYMMETRIC PARTITIONS - The present invention provides video encoding and decoding methods using block merging, which can be applied to a high resolution video of more than HD (High Definition) resolution. A video encoding method includes partitioning a current block into a first and a second prediction unit by using asymmetric partitioning, constructing a list of common merging candidate blocks including a predetermined number of common merging candidate blocks selected from adjacent blocks of the current block, selecting at least one candidate block from among the list of common merging candidate blocks and sending information of the selected candidate block to a decoder for each of the first and the second prediction unit.05-23-2013
20130128979VIDEO SIGNAL COMPRESSION CODING - The invention relates to the compression coding of video signals. The invention may be applied in some embodiments to the compression coding of three dimensional television (3DTV) signals. The invention provides a method of coding of a video signal, in which the presence of at least a first image area and a second image area in a picture, in which the images in the first image area and in the second image area are substantially identical is determined. In response to a positive determination, picture information in one image area is compression coded without reference to picture information in another image area. The invention also provides a video coder for coding a video signal.05-23-2013
20130128981MOVING IMAGE DECODING APPARATUS, MOVING IMAGE DECODING METHOD AND MOVING IMAGE ENCODING APPARATUS, AND MOVING IMAGE ENCODING METHOD - A moving image decoding apparatus includes a region boundary position information extracting unit which extracts region boundary position information between a clean region including at least one block encoded such that a pixel value is guaranteed to be decoded correctly, and a non-clean region, a region classification unit which specifies the clean region and the non-clean region in each picture based on the region boundary position information, a referenceability determining unit which, when a decoding target block belongs to the clean region, determines that blocks in the clean region in the decoding target picture and blocks in the clean region in the reference picture are referenceable, and, when the decoding target block belongs to the non-clean region, determines that all of blocks of the decoding target picture and the reference picture are referenceable, and a decoding unit which decodes the decoding target block with reference to only the referenceable blocks.05-23-2013
20130128983IMAGE CODING METHOD AND IMAGE DECODING METHOD - An image coding method for deriving a predicted motion vector suitable for increasing the coding efficiency of a motion vector. An image coding method of coding a current block with prediction using a first motion vector and a second motion vector, the first motion vector indicating a position in a first reference picture included in a first reference picture list. The second motion vector indicating a position in a second reference picture included in a second reference picture list, the method including: adding the first motion vector to a candidate predicted motion vector list to be used for coding the second motion vector, as a candidate predicted motion vector; selecting a predicted motion vector to be used for coding the second motion vector, from the candidate predicted motion vector list; and coding the second motion vector using the selected predicted motion vector.05-23-2013
20080279279Content adaptive motion compensated temporal filter for video pre-processing - A method of processing a video sequence is provided. The video sequence includes a plurality of video frames, wherein each of the plurality of video frames includes a plurality of macroblocks. Further, each of the plurality of macroblocks includes a plurality of pixels. The method includes determining energy values for pixels in a first macroblock and a second macroblock, determining a respective attenuation factor for each of the plurality of pixels in the first macroblock and determining a modified intensity value for each of the plurality of pixels in the first macroblock based on the respective attenuation factor for each of the plurality of pixels in the first macroblock, a respective intensity value of each of the plurality of pixels in the first macroblock and a mean intensity value of the first macroblock.11-13-2008
20110243231SELECTIVE MOTION VECTOR PREDICTION METHOD, MOTION ESTIMATION METHOD AND DEVICE THEREOF APPLICABLE TO SCALABLE VIDEO CODING SYSTEM - A selective motion vector prediction method and a motion estimation method and a device thereof applicable to a scalable video coding (SVC) system are disclosed. The selective motion vector prediction method includes the steps of performing an inter prediction to obtain a first motion vector prediction center; performing an inter-layer motion prediction to obtain a second motion vector prediction center; in the case the first and the second motion vector prediction center satisfying a preset condition, using the same reference data to calculate the rate-distortion costs for the inter prediction and the inter-layer motion prediction; and using the rate-distortion costs as a basis to select one of the inter prediction and the inter-layer motion prediction for applying to the SVC system. Thus, the same reference data is shared to enable reduced memory access in the process of coding and accordingly, reduced cost of and power consumption by memory access.10-06-2011
20100278268METHOD AND DEVICE FOR VIDEO CODING AND DECODING - A method of encoding/decoding a video and an apparatus thereof are disclosed. An embodiment of the present invention provides an encoding/decoding method and apparatus thereof that can interpolate a frame to be skipped with the consideration of the property of the frame. Accordingly, an embodiment of the present invention can encode and decode by using a frame-skipping method having low complexity.11-04-2010
20110129015HIERARCHICAL MOTION VECTOR PROCESSING METHOD, SOFTWARE AND DEVICES - A preferred method for hierarchical motion vector processing determines reliability levels of blocks in image data according to residual energy levels. Macroblocks of an image frame are merged according to reliability levels of the motion vectors of blocks. Single motion vectors are selected for merged macroblocks. Motion vectors of blocks merged in the step of merging are iteratively assigned by minimizing the bi-directional prediction difference on successively smaller merged blocks. The reliability levels are preferably determined by measure residual energy of both chrominance and luminance components. In preferred embodiments, motion vector correlation is used to assist the MV reliability classification and the merging and iterative assignment. Refinement and smoothing can be conducted on successively finer block sizes. Additionally, preferred methods account for occlusions by choosing only one of forward or backward prediction for occlusion regions depending upon the class of the occlusion. Results of motion vector classification of the invention can be used in motion compensated frame interpolation and other techniques.06-02-2011
20100303155IMAGE CODING DEVICE, IMAGE CODING METHOD, IMAGE CODING INTEGRATED CIRCUIT AND IMAGE CODING PROGRAM - An image coding device (12-02-2010
20130136181CACHE PREFETCH DURING MOTION ESTIMATION - An apparatus having a cache and a processor. The cache may be configured to (i) buffer a first subset of reference samples of a reference picture to facilitate a motion estimation of a current block and (ii) prefetch a second subset of the reference samples while a first search pattern is being tested. The first search pattern used in the motion estimation generally defines multiple motion vectors to test. The reference samples of the second subset may be utilized by a second search pattern in the motion estimation of the current block. The prefetch of the second subset may be based on a geometry of the first search pattern and scores of the motion vectors already tested. The processor may be configured to calculate the scores of the motion vectors by a block comparison of the reference samples to the current block according to the first search pattern.05-30-2013
20130136184IMAGE PREDICTION ENCODING/DECODING SYSTEM - An encoding target region in an image can be partitioned into a plurality of prediction regions. Based on prediction information of a neighboring region neighboring a target region, the number of previously-encoded prediction regions in the target region, and previously-encoded prediction information of the target region, a candidate for motion information to be used in generation of a predicted signal of the target prediction region as a next prediction region is selected from previously-encoded motion information of regions neighboring the target prediction region. According to the number of candidates for motion information selected, merging block information to indicate generation of the predicted signal of the target prediction region using the selected candidate for motion information and motion information detected by prediction information estimation means, or either one of the merging block information or the motion information is encoded.05-30-2013
20130136186METHOD AND APPARATUS FOR ESTIMATING MOTION VECTOR USING PLURALITY OF MOTION VECTOR PREDICTORS, ENCODER, DECODER, AND DECODING METHOD - Provided are a method and apparatus for estimating a motion vector using a plurality of motion vector predictors, an encoder, a decoder, and a decoding method. The method includes calculating spatial similarities between the current block and the plurality of neighboring partitions around the current block, selecting at least one of the neighboring partitions based on the calculated spatial similarities, and estimating a motion vector of the selected partition as the motion vector of the current block.05-30-2013
20100303154 METHOD AND DEVICE FOR VIDEO SEQUENCE DECODING WITH ERROR CONCEALMENT - The invention concerns a method for decoding a video sequence encoded according to a predictive format, which video sequence includes predicted images containing encoded residual data representing differences between the respective predicted image and a respective reference image in the video sequence.12-02-2010
20100309981REUSE OF A SEARCH REGION IN MOTION ESTIMATION OF MULTIPLE TARGET FRAMES - Several methods and a system to reuse a search region in motion estimation of multiple target frames are disclosed. In an embodiment, a method includes acquiring a search region of a reference frame. The method also includes maintaining the search region in a memory. In addition, the method includes performing motion estimation of a macroblock of a target frame in a direction using a processor and the search region. The method also includes reusing the search region maintained in the memory to perform motion estimation of an additional macroblock of an additional target frame in an additional direction. The method may include reusing the search region maintained in the memory to perform motion estimation of a separate macroblock of a separate target frame in a separate direction.12-09-2010
20100316125SYSTEM AND METHOD FOR MOTION COMPENSATION USING A SET OF CANDIDATE MOTION VECTORS OBTAINED FROM DIGITAL VIDEO - Embodiments include systems and methods for interpolating frames. In one embodiment, a system and method provides reduced halo and consequently a higher degree of accuracy/fidelity. In one embodiment, a method of video frame interpolation includes receiving first motion data based on a first video frame and a second video frame, receiving second motion data based on the second video frame and a third video frame, and estimating a block of an interpolated frame based on the second motion data and the first motion data. In one embodiment, the estimating comprises selectively using the second motion data based on the first motion data.12-16-2010
20100322315MOTION VECTOR DETECTION APPARATUS AND METHOD, MOVING PICTURE ENCODING APPARATUS AND METHOD, AND MOVING PICTURE DECODING APPARATUS AND METHOD - A motion vector detection apparatus that obtains, for each of the blocks of a predetermined size into which one frame is divided, motion vector information in units of a plurality of partitions of differing rectangular shapes and differing sizes, up to the size of the blocks, has a partition connector means (12-23-2010
20100322314METHOD FOR TEMPORAL ERROR CONCEALMENT - A method for performing temporal error concealment is provided. The method includes the following steps: detecting a damaged macroblock having four 8×8 damaged blocks; obtaining motion vectors of a plurality of 4×4 neighboring blocks surrounding the damaged macroblock; and for each of the 8×8 damaged blocks, determining a predicted motion vector according to motion vectors of six of the plurality of 4×4 neighboring blocks which are closest to the 8×8 damaged block.12-23-2010
20110110431METHOD OF CODING AND DECODING A STREAM OF IMAGES; ASSOCIATED DEVICES - A method of coding a stream of images that are divided into blocks comprising, for a block to code, a motion compensating step during which a residue is calculated from said block to code and from a reference block chosen as predictor, characterized in that it comprises a step of resilience filtering applied to at least one reference block, during which high frequencies of original content of at least one part of the reference block are filtered to obtain a blurred reference block, a step of calculating a residue using the blurred reference block as predictor in a motion compensating step, and a step of processing said residue for it to be coded.05-12-2011
20100322313SYSTEM AND METHOD FOR ESTIMATING SUM OF ABSOLUTE DIFFERENCES - A system is disclosed for estimating a sum of absolute differences (SAD) between a macro block of a current frame and a candidate block of a reference block. The macro block includes a number of sub macro blocks of pixels. A number of sample pixels are selected from each of the number of sub macro blocks. A reference pixel corresponding to each of the sample pixels is found in the candidate block. The system obtains a sub SAD by multiplying an average of the absolute differences between pixel values of the selected pixels of each of the plurality of sub macro blocks and corresponding relative pixels of the candidate block by a corresponding pixel number. The SAD is obtained by adding all of the sub SADs together.12-23-2010
20120269271MOTION VECTOR PREDICTION IN VIDEO CODING - Aspects of this disclosure relate to a method of coding video data. In an example, the method includes identifying a first block of video data in a first temporal location from a first view, wherein the first block of video data is associated with a first temporal motion vector. The method also includes determining, when a second motion vector associated with a second block of video data comprises a temporal motion vector and the second block is from a second view, a motion vector predictor for the second motion vector based on the first temporal motion vector. The method also includes coding prediction data for the second block using the motion vector predictor.10-25-2012
20120269270MOTION VECTOR PREDICTION IN VIDEO CODING - Aspects of this disclosure relate to, in an example, a method that includes identifying a first block of video data in a first temporal location from a first view, wherein the first block is associated with a first disparity motion vector. The method also includes determining a motion vector predictor for a second motion vector associated with a second block of video data, wherein the motion vector predictor is based on the first disparity motion vector. When the second motion vector comprises a disparity motion vector, the method includes determining the motion vector predictor comprises scaling the first disparity motion vector to generate a scaled motion vector predictor, wherein scaling the first disparity motion vector comprises applying a scaling factor comprising a view distance of the second disparity motion vector divided by a view distance of the first motion vector to the first disparity motion vector.10-25-2012
20120269269METHOD AND APPARATUS FOR ENCODING AND DECODING MOTION VECTOR OF MULTI-VIEW VIDEO - Provided are methods and apparatuses for encoding and decoding a motion vector in a multi-view view image sequence. A method of encoding includes: determining a view direction motion vector of a current block by performing motion prediction on the current block with reference to a first frame having a second view that is different from a first view of the current block; determining view direction motion vector predictor candidates using a view direction motion vector of an adjacent block that refers to a reference frame having a different view from the first view, and a view direction motion vector of a corresponding region included in a second reference frame having the first view and a different picture order count than the current frame; and encoding a difference value between the view direction motion vector of the current block and a selected view direction motion vector predictor, and mode information.10-25-2012
20100329347METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO SIGNAL USING MOTION COMPENSATION BASED ON AFFINE TRANSFORMATION - A video encoding method and apparatus are provided. The video encoding method includes determining whether a current block includes an affine-transformation object having an affine transformation; if the current block includes an affine-transformation object, generating a prediction block by performing affine transformation-based motion compensation on the current block in consideration of an affine transformation of the affine-transformation object; and if the current block does not include any affine-transformation object, generating a prediction block by performing motion vector-based motion compensation on the current block using a motion vector of the current block. Therefore, it is possible to achieve high video encoding/decoding efficiency even when a block to be encoded or decoded includes an affine transformation.12-30-2010
20100329340METHOD AND APPARATUS FOR ELIMINATING ENCODING DELAY WHEN A TELECINE SOURCE MATERIAL IS DETECTED - A video encoder includes an inverse telecine detector for receiving video frames and generating a telecine detection signal identifying repeated frames and an encoder pipeline buffer for storing unrepeated video frames received from the inverse telecine detector. The video encoder also includes an encoder engine for encoding the unrepeated video frames received from the encoder pipeline buffer, a pre-encoded frame storage medium for storing pre-encoded frames, and a processor. The processor is configured to cause the encoder engine to replace selected frames that have been identified as repeating frames by the inverse telecine detector with a pre-encoded frame accessed from the pre-encoded frame storage medium.12-30-2010
20110129014MOTION DETECTING METHOD AND MOTION DETECTOR - A motion detecting method and a motion detector are provided. The motion detecting method includes the following steps. When the type of the current macro block (MB) is intra-type (I-type) or predictively-coded type (P-type), a first procedure or a second procedure is performed. The first procedure includes setting the active flag of the current06-02-2011
20110243233METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO - Methods and apparatuses for encoding and decoding video are provided. The encoding method includes: performing motion estimation on a current block according to a first sub-pixel unit, and obtaining a motion vector in the first sub-pixel unit with respect to the current block; interpolating a reference picture indicated by the motion vector according to a second sub-pixel unit smaller than the first sub-pixel unit; using the interpolated reference picture, selecting a second sub-pixel in the second sub-pixel unit adjacent to a first sub-pixel in the first sub-pixel unit of the reference picture; selecting a corresponding region that has a smaller error with the current block, from among a first corresponding region of the reference picture and obtained with respect to the first sub-pixel, and a second corresponding region of the current block and obtained with respect to the selected second sub-pixel; and encoding information of the selected corresponding region.10-06-2011
20110007813RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoder including: a memory to store a reference image which is a previously decoded image; and a synthesizer to receive an encoded bitstream including information of I and P frames, and execute motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and the reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation, the bilinear interpolation being performable using a positive rounding method and a negative rounding method; wherein the bilinear interpolation is performed using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame; and wherein the rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20110007814RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoder including: a memory to store a reference image which is a previously decoded image; and a synthesizer to receive an encoded bitstream including information of I and P frames, and execute motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and the reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive and negative rounding method, and is performed using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame. Such specifies one of two values specifying a positive or a negative rounding method. The rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20090067502Method for Scalably Encoding and Decoding Video Signal - The present invention relates to a method for scalably encoding and decoding a video signal. In an embodiment of the present invention, motion information, such as reference indices, motion vector, modes, etc., for an enhanced layer can be derived from a base layer, and a reference index for an image block in the enhanced layer is determined using median criterion based upon the base layer. A reference index for a block, having the most pixels corresponding to those of the image block, in the base layer is selected as the reference index for the image block, and the nearer reference index is selected if more than one block in the base layer have the same pixels corresponding to those of the image block. And, a motion vector for the base layer block related to the selected reference index is selected as the motion vector for the image block.03-12-2009
20090067505Method and Apparatus for Motion Estimation Using Combined Reference Bi-Prediction - A method and apparatus are provided for motion estimation using combined reference bi-prediction. The apparatus includes an encoder (03-12-2009
20090067504REAL-TIME VIDEO CODING/DECODING - A video codec having a modular structure for encoding/decoding a digitized sequence of video frames in a multi-core system is described. The video codec comprises a memory unit; a multithreading engine. and a plurality of control and task modules organized in a tree structure, each module corresponding to a coding operation. The modules communicate with each other by control messages and shared memory. The control modules control all coding logic and workflow, and lower level task modules perform tasks and provide calculations upon receiving messages from the control task modules. The multithreading engine maintains context of each task and assigns at least one core to each task for execution. The method of coding/decoding comprises denoising, core motion estimation, distributed motion estimation, weighted texture prediction and error resilient decoding.03-12-2009
20090067503METHOD AND APPARATUS FOR VIDEO DATA ENCODING AND DECODING - Video data encoding and decoding methods and apparatuses are provided. In the video data encoding and decoding methods, codes books are provided to an encoder and a decoder. In the encoder, an index corresponding to a vector that is most similar to a current vector of an input moving picture among the vectors of the code book is encoded. In the decoder, the index is decoded. Accordingly, it is possible to increase compression ratio and reduce calculation complexity.03-12-2009
20110026599TEMPLATE-BASED PIXEL BLOCK PROCESSING - An adaptive filter to use in connection with prediction-based pixel block encoding and decoding is determined independently at the encoder and decoder side through a template-based procedure. A pixel block (02-03-2011
20110026598MOTION VECTOR DETECTION DEVICE - To provide a motion vector detection device capable of rapidly and accurately detecting a main motion vector from plot data on a computer screen. An edge extraction unit (02-03-2011
20110110427Selective deblock filtering techniques for video coding - This disclosure describes selective deblock filtering techniques that are particularly useful with coding standards that do not specify in-loop deblock filtering for standard compliance. In accordance with this disclosure, deblock filtering may be selectively performed with respect to block boundaries of a given video block being coded, a motion compensation process can be performed using a filtered version of the prediction video frame used to code the given video block, or both. This disclosure also provides selection rules that can be applied to determine what type of deblocking techniques to apply in various scenarios. The selection rules may improve the video coding and may also ensure that mismatch between video blocks at an encoder and a decoder is not introduced by the deblock filtering.05-12-2011
20110110429Fast Motion Estimation Methods Using Multiple Reference Frames - Motion estimation methods using multiple reference frames are provided. In the methods, motion estimation is performed on a current block using a single reference frame selected from the multiple reference frames or using the multiple reference frames in order of probability that each reference frame is an optimal reference frame for the current block. Accordingly, faster motion estimation is performed.05-12-2011
20110019743Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder includes a reference picture weighting factor unit for determining a weighting factor corresponding to the particular reference picture index; an encoder includes a reference picture weighting factor assignor for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture.01-27-2011
20110019742COMPRESSION ARTIFACT REMOVING APPARATUS AND VIDEO REPRODUCING APPARATUS - A compression artifact removing apparatus according to the present invention performs a filtering process on the target pixel, using the same filter as used for the best match pixel in the reference frame, when a scene change has not occurred in the target frame and a temporal correlation of the local area around the target pixel and the local area around its best match is high, to reduce the amount of computation.01-27-2011
20110026597Image Processing Apparatus and Image Processing Method - An apparatus and method provide logic for processing an image. In one implementation, a computer-implemented method is provided to process an image. The method receives information associated with pixels of the image disposed in pixel blocks, and selects one of the pixel blocks as a target block. A motion vector associated with a translation of pixels of a portion of the target block from reference positions in a previously-encoded image is computed at less than integer precision. The method computes predicted image data for the pixels of the target block based on at least the received information and the motion vector, and filters the predicted image data according to a predetermined process. The predetermined process is applied to predicted image data associated with pixels adjacent to a boundary pixel of the target block.02-03-2011
20090213937Image processing apparatus and method, program, and recording medium - A compensation allocation unit performs allocation compensation of a motion vector to a pixel to which a motion vector is not allocated by a victor allocation unit. A C/UC area determination unit compares magnitudes of a present DFD, a past DFD, and a future DFD based on a background vector and a DFD based on a compensation allocation vector by an evaluation value calculation unit to determine an area of a target pixel. Regarding the target pixel determined as the pixel in a covered area or an uncovered area, an interpolation method decision unit decides a computation method for a pixel value through which one of a double-sided interpolation and a one-sided interpolation. An interpolation frame generation unit computes the target pixel of the pixel value of the interpolation frame through the method decided by the interpolation method decision unit.08-27-2009
20110038418CODE OF DEPTH SIGNAL - Various implementations are described. Several implementations relate to determining, providing, or using a depth value representative of an entire coding partition. According to a general aspect, a first portion of an image is encoded using a first-portion motion vector that is associated with the first portion and is not associated with other portions of the image. The first portion has a first size. A first-portion depth value is determined that provides depth information for the entire first portion and not for other portions. A second portion of an image is encoded using a second-portion motion vector that is associated with the second portion and is not associated with other portions of the image. The second portion has a second size that is different from the first size. A second-portion depth value is determined that provides depth information for the entire second portion and not for other portions.02-17-2011
20100158119IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - It aims to provide the technique capable of reducing the process to be executed on the reception side and shortening the time from the occurrence of an error to the sending of a retransmission request. To achieve this, the image data is encoded in units of block by the encoding unit, the reference information representing whether or not the block is referred when another block is encoded is generated by the reference map generation unit, and then the encoded block and the reference information are transmitted by the transmission unit.06-24-2010
20100172417MOTION ESTIMATION TECHNIQUE FOR DIGITAL VIDEO ENCODING APPLICATIONS - The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails. The encoder then selects an inter encoding mode for coding the current macroblock, when the first local search is successful, otherwise the encoder selects the inter or intra encoding mode for encoding the current macroblock by comparing variances of the original and difference macroblocks.07-08-2010
20110110432METHOD AND APPARATUS FOR EFFECTIVELY COMPRESSING MOTION VECTORS IN VIDEO CODER BASED ON MULTI-LAYER - A method and apparatus of improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.05-12-2011
20110243234IMAGE PROCESSING APPARATUS AND METHOD - The present invention relates to an image processing apparatus and method in which an increase in the amount of encoding can be suppressed while realizing high-performance motion compensation.10-06-2011
20110116547Image Interpolation Processing Apparatus and Method Thereof - An image interpolation processing apparatus includes a motion vector generating module, for generating a first reference motion vector and a second reference motion vector for an interpolated block of an interpolated frame according to the interpolated block and a plurality of blocks adjacent to the interpolated block; a blurred block processing module, for determining an area property of the interpolation block being one of an image covered area, an image uncovered area and a non-blurred area according to the first reference motion vector and the second reference motion vector, and a representative motion vector of the interpolated block being one of the first reference motion vector and the second reference motion vector; and a frame interpolation module, for generating an image content of the interpolated block according to the representative motion vector and the area property.05-19-2011
20110116546SINGLE PASS ADAPTIVE INTERPOLATION FILTER - A method for performing single-pass adaptive interpolation filtering in order to code a bitstream includes: receiving the video frames; selecting an interpolation filter from a competitive filter set; performing motion prediction on a current frame of the video frame utilizing the interpolation filter; encoding the current frame into the bitstream; and updating the competitive filter set.05-19-2011
20110116545METHODS AND DEVICES FOR IN-LOOP VIDEO DEBLOCKING - A video encoder sends at least some information regarding boundary strength to the decoder along with the bitstream of encoded video. The decoder is configured to use the received boundary strength information from the encoder to reduce the number of computations necessary for the decoder to determine the boundary strength details required for performing deblocking when decoding the bitstream.05-19-2011
20110085594METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING - A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.04-14-2011
20110243243METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FO DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20110243242METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20110243240METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20110243237METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20090016438Method and apparatus for a motion compensation instruction generator - The present invention provides a method and an apparatus for an instruction generator that utilizes two or more parameters comprising one or more prediction mode parameters and one or more motion vector parameters to generate one or more motion compensation instructions for a prediction block in a macroblock.01-15-2009
20100135394DECODING METHOD AND DECODER WITH ROUNDING MEANS - The present invention relates to a video decoder (DEC) for decoding a bit stream (BS) corresponding to pictures (FR) of a video signal. The invention is such that, motion vectors (MV06-03-2010
20120243610DYNAMICALLY CONFIGURING A VIDEO DECODER CACHE FOR MOTION COMPENSATION - A video decoder cache used for motion compensation data may be dynamically reconfigured. In some embodiments, it may be reconfigured on picture or frame boundaries and in other embodiments it can be reconfigured on sequence boundaries. The cache may be flushed on each boundary to enable such reconfiguration.09-27-2012
20120243611IMAGE PROCESSING APPARATUS AND METHOD AS WELL AS PROGRAM - The present invention relates to an image processing apparatus and method, and a program capable of suppressing loss of high-frequency components and achieving a clear sense of the picture quality. A selector 09-27-2012
20090323814TRACKING POINT DETECTION APPARATUS AND METHOD, PROGRAM, AND RECORDING MEDIUM - A tracking-point detection apparatus includes a background motion vector detection unit, a background image generation unit, a gate setting unit, a tracking-point motion detection unit, and a tracking-point determination unit. The background motion vector detection unit is configured to detect motion vectors for pixels in a frame included in a moving image and to detect, in accordance with the detected motion vectors, a background motion vector representing the motion of a background image of the moving image. The background image generation unit is configured to calculate and update a pixel value of a pixel in a background frame, which is a frame of a background image, stored in a memory by performing motion compensation on a pixel in the frame in accordance with the detected background motion vector. The gate setting unit is configured to set a gate in accordance with data of the background frame stored in the memory.12-31-2009
20090034619Adapting an encoded video signal to encoding complexity - Techniques for adapting an encoded video signal to a complexity of video encoding may be used to reduce a bit rate of an encoded video signal when the complexity is reduced. Video communication according to the present techniques includes adapting an encoded video signal to an encoding complexity used to derive a set of encoded data from a series of video frames.02-05-2009
20100135402RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - An image decoder wherein motion compensation is performed with half-pixel accuracy and uses bilinear interpolation to calculate intensity values of chrominance or luminance at points where no pixels actually exist in the reference image, the bilinear interpolation being performable using a positive rounding method and a negative rounding method; wherein the bilinear interpolation is performed using a rounding method specified by the rounding method information; wherein the rounding method information is included in coded information of the currently decoded image; wherein the rounding method information specifies one of two values; and wherein one of the two values specifies a positive rounding method, and another one of the two values specifies a negative rounding method.06-03-2010
20100128791VIDEO CODING METHOD AND DEVICE - The video coding method comprises a step (05-27-2010
20110211637METHOD AND SYSTEM FOR COMPRESSING DIGITAL VIDEO STREAMS - A video compression method comprises the steps of a) receiving a set of video scenes comprising video frames; b) for each of said video scenes selecting a motion estimation algorithm and/or a rate control algorithm to respectively compress at least two of the scenes, wherein each of said video scenes is encoded by means of a predetermined encoding algorithm; c) carrying out the motion estimation and/or rate control algorithms selection such that the selected motion estimation algorithm provides minimal motion estimation prediction errors and/or the selected rate control algorithm provides the highest quantization factors for the lower distortion; and d) modifying said encoding algorithm for each of said video scenes in order to compress it by means of the selected motion estimation and/or rate control algorithms.09-01-2011
20120134415Method and Apparatus of Extended Motion Vector Predictor - A method and apparatus for determining a motion vector predictor (MVP) or a MVP candidate based on a MVP set are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the video data to be transmitted or stored. Motion vector prediction has been used to further conserve the bitrate associated with motion vector coding. Motion vector prediction technique being developed for the current high efficiency video coding (HEVC) only uses a MVP candidate set including spatial MVP candidates and a temporal candidate corresponding to the co-located block. In the current disclosure, the spatial and temporal motion vector predictor set is extended to include at least one spatially neighboring block associated with list 0 reference pictures and list 1 reference pictures, and co-located block and its neighboring block associated with list 0 reference pictures and list 1 reference pictures.05-31-2012
20090323815PICTURE CODING METHOD - A picture coding method according to the present invention includes: a coding step (S12-31-2009
20090323809FRAGMENTED REFERENCE IN TEMPORAL COMPRESSION FOR VIDEO CODING - In general, this disclosure describes techniques for encoding and decoding sequences of video frames using fragmentary reference pictures. The disclosure presents video encoding and decoding techniques for modified temporal compression based on fragmented references rather than complete reference pictures. In a typical sequence of video frames, only a portion (i.e., a tile) of each frame includes moving objects. Moreover, in each frame, the moving objects tend to be confined to specific areas that are common among each frame in the sequence of video frames. As described herein, such common areas of motion are identified. Pictures are then extracted from the identified areas of the video frames. Because these pictures may represent only portions of the frames, this disclosure refers to these pictures as “fragments.” It is then these fragments that are used as reference pictures for generating predicted frames during a motion compensation process, rather than the entire frame.12-31-2009
20110243241METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20110243239METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20110243232METHOD AND APPARATUS FOR ENCODING VIDEO BY USING DYNAMIC-RANGE TRANSFORMATION, AND METHOD AND APPARATUS FOR DECODING VIDEO BY USING DYNAMIC-RANGE TRANSFORMATION - Provided is a method and apparatus for encoding a video by using dynamic range transformation based on content and a method and apparatus for decoding a video by using dynamic range transformation based on content. The encoding method includes: performing inter prediction, through motion estimation, and intra prediction for a current region using image data in which a dynamic range of the current region is transformed based on content of an image of input video; performing transformation on residual data generated by the intra prediction and the inter prediction and performing quantization on a transformation coefficient generated by the transformation; and performing entropy encoding on the quantized transformation coefficient.10-06-2011
20110085593Macroblock Level Adaptive Frame/Field Coding for Digital Video Content - A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each of the smaller blocks in each picture in said stream of pictures in either frame mode or in field mode.04-14-2011
20090323816VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding apparatus comprises a frame memory/predictive image generator having a first predictive mode for generating a predictive image signal by selecting a combination from among a plurality combinations of a reference image number and a plurality of predictive parameters, and a second predictive mode for generating a predictive image signal according to a predictive parameter computed based on reference image numbers of reference images and an image-to-image distance, and a variable-length encoder to select one of the first and second prediction modes by the number of reference images, and encode orthogonal transformation coefficient information concerning a predictive error signal of a predictive image signal with respect to input video signal, mode information indicating an encoding mode, motion vector information and combination of selected reference image number with predictive parameter index information indicating combination of selected reference image information.12-31-2009
20090323813METHOD TO TRANSCODE H.264/AVC VIDEO FRAMES INTO MPEG-2 AND DEVICE - A method and device to transcode H.264/AVC video frames into MPEG-2 can include converting the H.264/AVC interframe coding modes into modes allowed by MPEG-2 and converting H.264/AVC motion information into corresponding MPEG-2 semantics, and determining a most suitable motion vector for each MPEG-2 macro-block, on the basis of motion vectors of reference frames and sub-blocks of a H.264/AVC macro-block corresponding to the MPEG-2 macro-block.12-31-2009
20090323812PROCESS FOR DELIVERING A VIDEO STREAM OVER A WIRELESS CHANNEL - Process for delivering a video stream over a wireless channel, wherein the video frames of the video stream are encoded by defining partitions of the video frames, said encoding being done by determining predictions for the partitions, a prediction being based on two reference areas (A12-31-2009
20090323817VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding apparatus comprises a frame memory/predictive image generator having a first predictive mode for generating a predictive image signal by selecting a combination from among a plurality combinations of a reference image number and a plurality of predictive parameters, and a second predictive mode for generating a predictive image signal according to a predictive parameter computed based on reference image numbers of reference images and an image-to-image distance, and a variable-length encoder to select one of the first and second prediction modes by the number of reference images, and encode orthogonal transformation coefficient information concerning a predictive error signal of a predictive image signal with respect to input video signal, mode information indicating an encoding mode, motion vector information and combination of selected reference image number with predictive parameter index information indicating combination of selected reference image information.12-31-2009
20100008424COMPUTER METHOD AND APPARATUS FOR PROCESSING IMAGE DATA - A method and apparatus for image data compression includes detecting a portion of an image signal that uses a disproportionate amount of bandwidth compared to other portions of the image signal. The detected portion of the image signal result in determined components of interest. Relative to certain variance, the method and apparatus normalize the determined components of interest to generate an intermediate form of the components of interest. The intermediate form represents the components of interest reduced in complexity by the certain variance and enables a compressed form of the image signal where the determined components of interest maintain saliency. In one embodiment, the video signal is a sequence of video frames. The step of detecting includes any of: (i) analyzing image gradients across one or more frames where image gradient is a first derivative model and gradient flow is a second derivative, (ii) integrating finite differences of pels temporally or spatially to form a derivative model, (iii) analyzing an illumination field across one or more frames, and (iv) predictive analysis, to determine bandwidth consumption. The determined bandwidth consumption is then used to determine the components of interest.01-14-2010
20100008421Distributed transcoding - A method of delivering a video stream, including encoding a video stream into a first encoded stream and selecting encoding parameter values for subsequent transcoding the first encoded stream into a specific second encoded stream. Furthermore, the method includes transmitting the first encoded stream with the selected encoding parameter values to a transcoder over a standard communication network, transcoding the first encoded stream into a second encoded stream having the selected parameter values and forwarding the second encoded stream.01-14-2010
20100014589MOVING PICTURE CODING METHOD, AND MOVING PICTURE DECODING METHOD - A moving picture coding apparatus (01-21-2010
20100054337VIDEO TRANSMITTING APPARATUS AND VIDEO TRANSMITTING METHOD - A video transmitting apparatus has a moving image encoding unit performing an encoding process using an intra-slice scheme; and a transmission monitoring unit detecting disconnection and recovery of a line between the moving image encoding unit and a video receiving apparatus. At a time of line disconnection, the moving image encoding unit performs an encoding process on a picture by putting reference restrictions on a motion vector so that a transmission error falls within a pixel macroblock line.03-04-2010
20100054335Encoding apparatus and decoding apparatus - An encoding apparatus having a direct mode as a prediction mode, when a pixel with opposite parity from a top field to a bottom field, for example, is referred to for obtaining a reference vector in the direct mode, performs correction by adding or subtracting a value corresponding to a half pixel to or from a value of the obtained reference vector. The encoding apparatus, when a pixel with opposite parity is referred to for obtaining a first and a second direct vector by temporally scaling the corrected reference vector, performs correction by adding or subtracting a value corresponding to a half pixel to or from values of the obtained direct vectors.03-04-2010
20110096841VIDEO CODING AND DECODING METHODS WITH HIERARCHICAL TEMPORAL FILTERING STRUCTURE, AND APPARATUS FOR THE SAME - A method and apparatus for video coding and decoding with hierarchical temporal filtering structure are disclosed. A video encoding method in a temporal level having a hierarchical temporal filtering structure, includes generating prediction frames from two or more reference frames that temporally precede the current frame; generating a residual frame by subtracting the prediction frames from the current frame; and encoding and transmitting the residual frame.04-28-2011
20110249746METHOD FOR BROWSING VIDEO STREAMS - Video equipment, e.g. for TV producers studios, need to display multiple channels of bit-streams simultaneously. Decoding multiple streams of high bit-rate videos is extremely computational intensive. An improved method for browsing an encoded frequency domain video sequence comprises steps of determining a spatial and/or temporal reduction level for browsing a video sequence, determining according to the determined reduction level frames, fields or parts of blocks or macroblocks to be skipped for decoding, and decoding the remaining data to a video with lower spatial and/or temporal resolution. The reduction may include adaptive partial coefficient decoding, motion vector truncation and/or simplified deblocking filtering. The reduction of spatial resolution is advantageously performed in the frequency domain, so that the inverse quantization process and the iDCT processes require less computing.10-13-2011
20100061456Inter-Layer Prediction Method for Video Signal - The present invention relates to a method for conducting interlayer motion prediction in encoding or decoding of video signal. The present method identifies types of pictures on a base layer and a current layer or types of macro blocks included in the pictures, forms a block on a virtual layer by copying motion information of a macro block on the base layer if type of a picture on the current layer or a macro block included therein is identified to field and type of a picture on the base layer or a macro block included therein is identified to progressive, and uses the copied motion information of the block on the virtual layer in interlayer motion prediction for a macro block of the picture on the current layer.03-11-2010
20100061461SYSTEM AND METHOD FOR VIDEO ENCODING USING CONSTRUCTED REFERENCE FRAME - Disclosed herein is a method for digital video encoding prediction comprising creating a constructed reference frame using an encoder and compressing a series of source video frames using the constructed reference frame to obtain a bitstream including a compressed digital video signal for a subsequent decoding process. The constructed reference frame is omitted from the series of digital video frames during the subsequent viewing process.03-11-2010
20100061459METHOD AND APPARATUS FOR COMPLEXITY-SCALABLE MOTION ESTIMATION - Embodiments of the invention generally provide a method and apparatus for complexity-scalable video coding. One embodiment of a method for video coding includes receiving a sequence of one or more video frames, obtaining a budget for the one or more video frames, the budget specifying a maximum number of computations that may be used in performing motion estimation for the one or more video frames, allocating the maximum number of computations among individual ones of the one or more video frames, performing motion estimation in accordance with the allocating, and outputting a motion estimate for the sequence.03-11-2010
20110150094RATE CONTROL FOR TWO-PASS ENCODER - Rate control is provided in a two-pass encoder. A first encoding pass is performed to encode an input video sequence. Coding statistics for the first encoding pass are collected. Target coding parameters for a second encoding pass are calculated based on the coding statistics for the first encoding pass. The second encoding pass is performed to encode the input video sequence at a constant bit rate (CBR) using the target coding parameters to form a second pass encoded stream.06-23-2011
20110176615METHOD AND APPARATUS FOR ENCODING AND DECODING MOTION VECTOR BASED ON REDUCED MOTION VECTOR PREDICTOR CANDIDATES - A method and apparatus for encoding and decoding a motion vector of a current block. The method of encoding including: generating information about the motion vector based on a motion vector of a current block and a motion vector predictor of the current block by estimating the motion vector and determining a first motion vector predictor candidate from among a plurality of motion vector predictor candidates as the motion vector predictor based on a result of the estimating; and generating a virtual motion vector by using a second motion vector predictor candidate and the information about the motion vector, generating vector differences between the virtual motion vector and the plurality of motion vector predictor candidates, comparing the vector differences with the information about the motion vector, and selectively excluding the second motion vector predictor candidate according to the comparing.07-21-2011
20110176616FULL RESOLUTION 3D VIDEO WITH 2D BACKWARD COMPATIBLE SIGNAL - Items are used to encode or in encoding a stereoscopic video signal. The signal includes first view frames based on a first view associated with a first eye perspective and second view frames based on a second view associated with a second eye perspective. The encoding includes receiving the stereoscopic video signal and determining the first view frames and the second view frames. The encoding also includes encoding the first view frames based on the first view and encoding the second view frames based on the second view and also the first view. In the encoding, a plurality of the encoded second view frames reference at least one first view frame for predictive coding information. Items are also used to decode the encoded stereoscopic video signal.07-21-2011
20110176614IMAGE PROCESSING DEVICE AND METHOD, AND PROGRAM - The present invention relates to an image processing device and method, and program, wherein compression efficiency can be improved.07-21-2011
20110176611METHODS FOR DECODER-SIDE MOTION VECTOR DERIVATION - An exemplary method for decoder-side motion vector derivation (DMVD) includes: checking a block size of a current block to be encoded and accordingly generating a checking result; and utilizing a DMVD module to refer to the checking result to control conveyance of first DMVD control information which is utilized for indicating whether a DMVD coding operation is employed to encode the current block. When the checking result indicates a predetermined criterion is satisfied, the first DMVD control information is sent in a bitstream; otherwise, the first DMVD control information is not sent.07-21-2011
20110080953Method for determining a filter for interpolating one or more pixels of a frame And Method And Device For Encoding Or Recoding A Frame - The invention is related to a method for determining a filter for interpolating one or more pixels comprised in a frame. The proposed method comprises the step of determining the filter based on other pixels in the remainder of the frame wherein a motion vector associated with said pixels has at least one motion parameter in common with another motion vector associated with said other pixels and the filter is determined such that a quality of an interpolation of said other pixels, said interpolation being determined by help of said determined filter, reaches or exceeds the quality of any other interpolation of said other pixels determinable by help of one of different filter candidates comprised in a filter candidate set. In determining the filter solely on different other pixels of the same frame, said method for determining a filter for interpolation allows for realization of a single pass encoding framework.04-07-2011
20110103488CODING DISTORTION REMOVAL METHOD, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND APPARATUS AND PROGRAM FOR THE SAME - A semiconductor for decoding coded image and audio data, which includes an audio processor that decodes coded audio data, and an image decoder that decodes image data. The image decoder removes coding distortion in pixels of two adjacent transform blocks which are motion-compensated, having a coded motion compensation error equal to zero, and are located inside a same macroblock. The image decoder includes a motion compensation block boundary detector that determines whether the motion compensation error of the two adjacent transform blocks located inside the macroblock is zero, and determines whether a boundary of two adjacent transform block is also a boundary of two adjacent motion-compensation blocks. The image decoder also includes a filter that removes coding distortion in pixels of the two adjacent transform blocks, and a selector that selects whether or not the filter removes the coding distortion based on the determination of the motion compensation block boundary detector.05-05-2011
20110103482FAST MOTION ESTIMATION APPARATUS AND METHOD BASED ON ADAPTIVE SEARCH RANGE AND PARTIAL MATCHING ERROR - Provided are fast motion estimation based on adaptive search range and partial matching error. A block dividing unit divides an original block which is set in a first image frame among successive image frames and candidate blocks into a plurality of operation units comprising the same number of pixels, respectively. A matching error calculating unit calculates a partial matching error. A matching error comparing unit replaces an optimal candidate block with a selected candidate block, when a total sum of partial matching errors calculated on all operation units of the candidate block is less than a minimum matching error being the total sum of partial matching errors calculated on all operation units of the optimal candidate block, and a maximum value of the partial matching errors calculated on all the operation units of the selected candidate block is less than a maximum matching error being a maximum value of the partial matching errors calculated on all the operation units of the optimal candidate block.05-05-2011
20110103481METHOD AND APPARATUS FOR PREDICTIVE REFERENCE DATA TRANSFER SCHEME FOR MOTION ESTIMATION - A method and apparatus for predicting reference data transfer scheme for motion estimation. The method includes computing, via the processor, hypothetical rectangle region in reference frame containing all the predicting and reference data for doing motion estimation search around the region, if the macroblock is not the first in a row, utilizing overlap with previously fetched reference data, computing overlap with previously fetched reference data, and transferring needed data, invalidating any predictor, wherein the predictor is not part of the fetched data, and regulating the motion estimation and setting the motion vector to an effective value based on the fetched and computed data.05-05-2011
20100128790MOTION COMPENSATION DEVICE - A motion compensation device includes a counter unit that counts the number of input frames, a rounding-direction control unit that determines, based on whether the number of counts is odd or even, a rounding direction during reduction of a motion vector, a MV-conversion processing unit that applies, after the motion vector is reduced, rounding processing to a value of the motion vector after the reduction, and a decoded-image creating unit that creates a decoded image from a predicted image created by using the motion vector after the rounding processing and a reference image.05-27-2010
20090028244COMPRESSED NON-REFERENCE PICTURE RECONSTRUCTION FROM POST-PROCESSED REFERENCE PICTURES - A method of compressed picture reconstruction using a plurality of post-processed reference pictures. The method generally includes the steps of (A) generating a first of a plurality of reconstructed pictures by decoding a first of a plurality of compressed pictures using at least one of a plurality of non-post-processed reference pictures buffered in a reference memory, wherein the compressed pictures are received in an input bitstream, (B) generating a first of a plurality of processed pictures by artifact processing the first reconstructed picture to remove artifacts, (C) buffering in the reference memory both (i) the first reconstructed picture as one of the non-post-processed reference pictures and (ii) the first processed picture as one of the post-processed reference pictures and (D) generating a second of the reconstructed pictures by decoding a second of the compressed pictures using at least one of the post-processed reference pictures buffered in the reference memory.01-29-2009
20090028245Method for Deriving Coding Information for High Resolution Pictures from Low Resolution Pictures and Coding and Decoding Devices Implementing Said Method - The invention relates to spatially scalable encoding and decoding processes using a method for deriving coding information. More particularly, it relates to a method for deriving coding information for high resolution pictures from the coding information of low resolution pictures. The method mainly comprises the following steps: 01-29-2009
20090213936ENCODING DEVICE - An encoding method for encoding a sequence of image frames, the encoding method includes the steps of: selecting an image frame to be deleted from the plurality of image frames; detecting motion vectors between a pair of image frames that are either previous to and next to the selected image frames; deleting the selected image frame if the detected motion vectors meet a predetermined condition; and encoding remainder of the image frames in which any of the image frames has been deleted by the deleting step.08-27-2009
20090213935System and Method For Compressing Video By Allocating Bits To Image Tiles Based On Detected Intraframe Motion Or Scene Complexity - A system and method are described below for encoding interactive low-latency video using interframe coding. For example, one embodiment of a computer-implemented method for performing video compression comprises: logically subdividing each of a sequence of images into a plurality of tiles, each of the tiles having a defined position within each of the sequence of images, the defined position remaining the same between successive images; detecting motion or high scene complexity within the sequence of images occurring at each of the positions of each of the tiles; and encoding each tile within each image of the sequence of images using a specified number of bits, the number of bits selected based on the detected amount of motion at the position of each tile across the sequence of images.08-27-2009
20080285655DECODING WITH EMBEDDED DENOISING - Methods and systems for denoising embedded digital video decoding. Prediction and residue block of a current frame are obtained from motion vector. Variance of residue block is calculated using prior reference blocks, and a causal temporal linear minimum square error estimator is used to calculate a filter coefficient. The residue block is modified using the filter coefficient, and an output digital bitstream of blocks of pixels of the current frame is produced using the modified residue block and prior denoised prediction value of prior frames.11-20-2008
20110249753METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FO DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-13-2011
20110249743Super-block for high performance video coding - A system for encoding and/or decoding video that includes the use of super blocks. The use of super blocks permits a reduction in the bit-rate of the video bit stream.10-13-2011
20110249745BLOCK AND PARTITION SIGNALING TECHNIQUES FOR VIDEO CODING - A video block syntax element indicates whether all of the partitions of a video block are predicted based on a same reference list and no greater than quarter-pixel accuracy is used. If the video block syntax element is set, partition-level signaling of the reference lists is avoided. If the video block syntax element is not set, partition-level signaling of the reference lists occurs. If the video block syntax element is set, partition-level syntax elements may be used for each of the partitions of the video block, wherein the partition-level syntax elements each identify one of the reference lists and motion vector accuracy for a given one of the partitions.10-13-2011
20110249744Method and System for Video Processing Utilizing N Scalar Cores and a Single Vector Core - A multimedia processor may comprise a first scalar core, a second scalar core, and a vector core integrated on a single substrate of said multimedia processor. The multimedia processor may receive data and instructions associated with image processing. The multimedia processor may configure the received data and instructions into data and instructions associated with a first image processing program and into data and instructions associated with a second image processing program independent of the first image processing program. The first image processing program may be configured to be handled by the first scalar core and the vector core, while the data and instructions associated with the second image processing program may be configured to be handled by the second scalar core and the vector core. The vector core may communicate data to and from register files in each of the first and second scalar cores.10-13-2011
20110080955METHOD AND APPARATUS FOR MOTION VECTOR PROCESSING - A method for processing a plurality of motion vectors is disclosed. The method includes determining a number of different block sizes in the video frame; and, performing a variable block size motion vector process if the number of different block sizes in the video frame is greater than one, the variable block size motion vector process comprising constructing a pyramid of motion vectors from the plurality of motion vectors, the pyramid having at least a first layer and a second layer of motion vectors, each of the first and second layers having a set of motion vectors based on a particular block size. An apparatus for performing the inventive method is also disclosed.04-07-2011
20110080954MOTION VECTOR PREDICTION IN VIDEO CODING - A method and apparatus is disclosed herein for motion vector prediction and coding. In one embodiment, the method comprises: deriving N motion vector predictors for a first block that has N motion vectors corresponding to N lists of reference frames and a current frame, including constructing one of the N motion vector predictors when a second block that neighbors the first block and is used for prediction has at least one invalid motion vector, where N is an integer greater than 1; generating N differential motion vectors based on the N motion vectors and N motion vector predictors; and encoding the N differential motion vectors.04-07-2011
20100246679VIDEO DECODING IN A SYMMETRIC MULTIPROCESSOR SYSTEM - Systems and methods for decoding of compressed video enable the storing of compressed video data in a memory shared by a group of symmetric multiple processors. The video includes a plurality of frames and each of the plurality of frames has one or more slices. Such one or more slices are assigned, by a main processor, of the group of symmetric multiple processors to the group of multiple processors. The one or more assigned slices are partially decoded by the one or more of the group of multiple processors and the partially decoded one or more slices are stored in the memory. Subsequently, each of the plurality of frames having at least one partially decoded slice is assigned to one or more of the group of multiple processors. In a successive progression, the group of multiple processors in combination fully decodes each of the plurality of frames.09-30-2010
20100124280VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-20-2010
20110069761PARALLEL ENCODING DEVICE, RECORDING MEDIUM, AND IMAGING DATA ENCODING METHOD - According to one embodiment, a device includes a storage unit, a processing unit, a detection unit, a control unit. The storage unit stores control information indicating progress states of process modes for encoding with respect to process blocks. The processing unit parallelly executes executable process modes for executable process blocks, based on the control information and a dependency relationship between the process modes for the process blocks. The detection unit detects error occurring in processing of the processing unit. The control unit updates to a re-executable state, if the error occurring is detected, the progress state of an error process block and the progress state of a process block dependent on the error process block in the control information.03-24-2011
20110069760Apparatus and method for motion estimation of three dimension video - Disclosed is a 3D video motion estimating apparatus and method. The 3D video motion estimating apparatus may enable a motion vector of a color image and a motion vector of a depth image refer to each other, thereby increasing a compression rate.03-24-2011
20120201304METHOD AND SYSTEM FOR VIDEO ENCODING USING A VARIABLE NUMBER OF B FRAMES - An effective method for dynamically selecting the number of I, P and B frames during video coding is proposed. Short-term look-ahead analysis of a video sequence yields a variable number of B frames to be coded between any two stored pictures. The first picture of a group of frames (GOF) may be coded as a B picture. Motion speed is calculated for each picture of the GOF with respect to the first picture of the GOF. Subject to exceptions, as long as the subsequent pictures exhibit motion speeds that are similar and motion vector displacements that are co-linear with those of the first picture in the GOF, they may be coded as B pictures. When a picture is encountered having a motion speed that is not the same as that of the first picture in the GOF, the picture may be coded as a P picture.08-09-2012
20120201306METHOD AND APPARATUS FOR DEFINING AND RECONSTRUCTING ROIS IN SCALABLE VIDEO CODING - A multiple ROI (region of interest) setting method and apparatus in scalable video coding and an ROI reconstructing method and apparatus are provided. The multiple ROI setting apparatus includes: an ROI setting unit which sets at least one or more ROIs and allocates ROI identification numbers to the each of ROIs; a mapping unit which allocates at least one or more slice group identification numbers to the at least one or more ROI identification numbers; and a message generating unit which generates a message including ROI-associated information, slice-group-associated information, mapping information on mapping of the ROI identification number to the at least one or more slice group identification numbers, and scalability information.08-09-2012
20120201305EFFICIENT USE OF STORAGE IN ENCODING AND DECODING VIDEO DATA STREAMS - Some embodiments facilitate encoding/decoding of a frame by organizing frame data in a storage structure in a novel manner. Specifically, in a portion of the storage structure allocated for a frame slice, used partition entries are stored in a first section of the allocated portion and unused partition entries are stored in a second section of the allocated portion, the first and second sections each comprising a continuous area of storage in the storage structure so that used partition entries are not interspersed with nonused partition entries. In some embodiments, additional data useful in the encoding or decoding of video data is determined and stored into the unused bytes of used partition entries (such as macroblock header data or canonical reference frame index data). In some embodiments, two or more identical partitions of a macroblock are coalesced into a single partition.08-09-2012
20110150095IMAGE ENCODING/DECODING APPARATUS AND METHOD - Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.06-23-2011
20110150093METHODS AND APPARATUS FOR COMPLETION OF VIDEO STABILIZATION - Systems and methods for video completion. A set of global motion parameters may be determined for a current frame that is to be stabilized. Motion vectors for edge blocks of the current frame may then be calculated. For a prospective new block beyond the current frame, candidate blocks may be generated using a global motion vector and the calculated motion vectors. From the candidate blocks, a candidate block may be selected to be the new block, wherein the selected candidate block may be located at least partially within the outer boundary of the eventual stabilized version of the current frame.06-23-2011
20110150092EMULATION OF BI PREDICTED PICTURES USING ADJACENT PICTURES FOR IMPROVED VIDEO - A method and apparatus for emulation of Bi predicted B pictures is described where a B picture is constructed only from information from one preceding and successive frame without pixel averaging or motion vector computation. In the case of H.264 or analogous codecs, a top field of a B picture is formed from the successive I or P picture top field, and the bottom field formed from the previous P picture bottom field. B picture emulation may reverse the previous and successive pictures. For interlaced pictures, the odd and ever interlacing fields are treated as top and bottom fields, and also use information from both one preceding and successive frame. The resulting Bi predicted B pictures reduce inter-GOP flicker.06-23-2011
20110211642MOVING PICTURE ENCODING/DECODING APPARATUS AND METHOD FOR PROCESSING OF MOVING PICTURE DIVIDED IN UNITS OF SLICES - A moving picture encoding/decoding apparatus and method for processing a moving picture, which is divided in units of slices are provided. The encoding method includes: dividing a moving picture in units of slices when the moving picture is received; determining an encoding order of moving pictures divided in units of slices; and generating a bitstream by encoding moving pictures, which are divided in units of slices, according to a corresponding order when the encoding order had been determined.09-01-2011
20110211639COMPRESSION CODING AND COMPRESSION DECODING OF VIDEO SIGNALS - The invention relates to the compression coding of video signals, and in particular relates to the compression coding of two or more video signals. The invention is particularly suitable for the compression coding of two stereoscopic video signals in a 3 dimensional television system.09-01-2011
20110249752METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FO DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-13-2011
20080253458Image Preprocessing with Selective Lowpass Filtering from Motion Compensation - Preprocessing for motion-compensated video encoding such as MPEG includes lowpass filtering, temporal (10-16-2008
20100278269Systems and Methods for using DC Change Parameters in Video Coding and Decoding - The present application discloses systems and methods for using DC change parameters in video coding. In one embodiment, the method includes the steps of: (a) obtaining a DC change parameter; (b) decoding encoded video data to obtain reconstructed pixel values; and (c) using the reconstructed pixel values, a filter, and the DC change parameter to obtain filtered reconstructed pixel values with a DC change.11-04-2010
20100322316MOVING-PICTURE ENCODING APPARATUS AND DECODING APPARATUS - As the encoding mode, a moving-picture encoding apparatus includes an encoding mode that relies only on inference based on encoding information of a previously encoded unit block so as to encode a picture of a unit block. The encoding information in this encoding mode is imparted with secondary encoding information for improving the prediction performance, e.g., MV information. The MV information is produced by an MV-information producing unit 12-23-2010
20100309980APPARATUS AND METHOD FOR PROCESSING IMAGE - A motion detection unit detects a motion vector of each of blocks constituting interpolation frame F12-09-2010
20110211640METHOD AND APPARATUS FOR ENCODING MOTION VECTOR, AND METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING SAME - A method and an apparatus for encoding a motion vector, and a method and an apparatus for encoding/decoding an image using the same are closed. The apparatus includes: a prediction candidate selector for selecting one or more motion vector prediction candidates; a predicted motion vector determiner for determining a PMV among the one or more motion vector prediction candidates; and a differential motion vector encoder for calculating a differential motion vector encoder for calculating a DMV by subtracting the predicted motion vector having been determined, from the current motion vector, and encoding the d having been calculated. The apparatus encodes a motion vector by using the prediction motion vector which is more accurately predicted, and reduces an amount of bits required for encoding information of the predicted motion vector, thereby improving the compression efficiency.09-01-2011
20110176610PROPAGATION MAP - A method comprises receiving original encoded video stream as one input, accessing encoded data divided into slices which are further divided into blocks, receiving the list of possible changes or watermarks as another input, accessing at least one block, decoding each slice, setting down each slice, extracting from the list those changes that apply to the at least one block, and constructing propagation maps from inter-prediction or intra-prediction using changes for the at least one block. The method can further comprise decoding luminance data using the propagation maps, comparing the luminance data to a fidelity threshold, and applying possible changes or watermarks to those not exceeding the fidelity threshold.07-21-2011
20100118961HIGH-SPEED MOTION ESTIMATION APPARATUS AND METHOD - A high-speed motion estimation apparatus includes a current region memory, an integer-times motion estimation unit, and a decimal-times motion estimation unit. The current region memory receives pixel data of a current region from an external frame memory to store the pixel data. The integer-times motion estimation unit stores pixel data of an estimation region which are read from the frame memory, and predicts an integer-times motion vector by using the pixel data of the current region and the pixel data of the estimation region. The decimal-times motion estimation unit reads the pixel data of the estimation region, and predicts a decimal-times motion vector by using the read pixel data and the predicted integer-times motion vector.05-13-2010
20110249749Moving Picture Decoding Method and Moving Picture Encoding Method - High-quality video is provided using a small amount of coded bits. The moving picture decoding method performs inter-frame prediction processing. With the aforementioned inter-frame prediction processing, blocks with similar motion vectors from among the motion vectors in multiple blocks that have already been decoded are combined and a combined area is computed. A predicted vector for a target block to be decoded is computed using the motion vector of the aforementioned combined area, and a motion vector for the aforementioned target block is computed based on the aforementioned predicted vector and a difference vector which is included in a coded stream that is input. A predicted image is generated using the aforementioned motion vector, and a difference image which is included in the aforementioned coded stream and the aforementioned predicted image are added to generate a decoded image.10-13-2011
20100260264ADAPTIVE FILTERING BASED UPON BOUNDARY STRENGTH - Adjacent regions are identified in an image. Coding parameters for the adjacent regions are identified. Selective filtering is performed at the region between the identified adjacent regions.10-14-2010
20110249750IMAGING DEVICE - An imaging device includes: a frame rate conversion unit synthesizing images captured at a second frame rate higher than a first frame rate to convert the images into a synthesized image having the first frame rate; a motion estimation unit performing a motion estimation between consecutive frames of the images captured at the second frame rate; a motion vector synthesis unit synthesizing motion vectors having the second frame rate obtained as a result of the motion estimation, so as to generate a synthesized motion vector of a target macroblock in the synthesized image; a motion blur amount determination unit which counts, in an area surrounding the target macroblock, the number of macroblocks having the same synthesized motion vector as that of the target macroblock and compares a value derived from the number of counted macroblocks with a threshold value, the counting and the comparison being performed for each target macroblock; and a motion vector selection unit selecting the synthesized motion vector when the value derived from the number of counted macroblocks is determined, as a result of the comparison, to exceed the threshold value.10-13-2011
20080317127SYSTEM AND METHOD FOR CORRECTING MOTION VECTORS IN BLOCK MATCHING MOTION ESTIMATION - A system and method for processing video data is disclosed. In one embodiment, the method includes receiving a first video frame and a second video frame, where the video frames comprise a plurality of blocks of pixels. The method further includes obtaining motion vector information identifying positions of a plurality of matching blocks between the first frame and the second frame, and calculating a measure related to an angle between a first motion vector for a first block in the first frame and a second motion vector for a second block in the first frame, where the second block is located at a frame position in the first frame within a neighborhood of the frame position in the second frame identified by the first motion vector. The method further includes determining that the first and second motion vectors are conflicting based on the calculated angle measure and modifying at least one of the first motion vector and the second motion vector if the first and second motion vectors are determined to be conflicting.12-25-2008
20110176612Motion Prediction Method - The invention provides a motion prediction method. First, a plurality of candidate units corresponding to a current unit of a current frame is determined A plurality of motion vectors of the candidate units is then obtained. A plurality of temporal scaling factors of the candidate units is then calculated according to a plurality of temporal distances between a plurality of reference frames of the motion vectors and the current frame. The motion vectors of the candidate units are then scaled according to the temporal scaling factors to obtain a plurality of scaled motion vectors. Finally, a motion vector predictor for motion prediction of the current unit is then selected from the candidate units according to the scaled motion vectors.07-21-2011
20100098172VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-22-2010
20100098167VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-22-2010
20100098169METHOD AND APPARATUS FOR MOTION ESTIMATION USING COMPRESSED REFERENCE FRAME - An apparatus and a method for determining motion estimation with compressed frame, the method includes loading a macroblock of a current image into codec, transferring a compressed version of motion estimation search window data from previous frame to codec, and carrying out motion estimation to calculate motion vector for current macroblock by matching block to uncompressed version of previous frame data in search window.04-22-2010
20100098166VIDEO CODING WITH COMPRESSED REFERENCE FRAMES - A method and apparatus for video coding for reducing memory size and external memory access bandwidth in video coding, wherein the method compresses a reference frame prior to storing the reference frame to memory.04-22-2010
20100098171VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-22-2010
20100098170Transcoding device and transcoding method - A transcoding device includes a decoding unit that decodes both motion vectors of macroblocks and images from encoded images in a first encoding format; a first decoded image storing unit that stores therein the decoded motion vectors of macroblocks and the decoded images; a vector searching unit that searches for motion vectors of macroblocks in a second encoding format by using the decoded images stored in the first decoded image storing unit as reference images and by using the decoded motion vectors stored in the first decoded image storing unit; and a motion compensating unit that reads, from the first decoded image storing unit, areas in the decoded images, which are indicated by the motion vectors for which the vector searching unit has searched, and performs motion compensation by using the areas in the decoded images and the motion vectors for which the vector searching unit has searched.04-22-2010
20100098168VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-22-2010
20100098165DYNAMIC MOTION VECTOR ANALYSIS METHOD - The proposed Dynamic Motion Vector Analysis method applies to the motion compensation module of a video decoder system. The method analyzes the motion-vectors of a given region of picture frame and outputs a set of regions to be fetched from the reference frames stored in the external memory. The size and number of regions are decided by a hierarchical method that uses a set of user-defined input thresholds. Pre-processing of the motion vectors associated with the given region allows the method to handle reference data to be fetched from multiple reference frames in the same framework. A complementary dynamic batch (region of operation) size strategy that works along with MV-analysis is also proposed to help utilize the on-chip memory resources more efficiently.04-22-2010
20100080299FRAME FREQUENCY CONVERSION APPARATUS, FRAME FREQUENCY CONVERSION METHOD, PROGRAM FOR ACHIEVING THE METHOD, COMPUTER READABLE RECORDING MEDIUM RECORDING THE PROGRAM, MOTION VECTOR DETECTION APPARATUS, AND PREDICTION COEFFICIENT GENERATION APPARATUS - A frame-frequency conversion apparatus includes: a motion estimation section inputting a first and a second frames of a low-frequency image signal and estimating a plurality of candidate vectors indicating motions between the frames; a first pixel generation section generating a predicted pixel of a predicted frame corresponding to the second frame for each vector; a motion allocation section obtaining a correlation between the predicted pixel of the predicted frame and a second-frame pixel, selecting a candidate vector of a high-correlation predicted pixel, and allocating the selected candidate vector to a pixel of an interpolated frame interpolating the first and the second frames to determine the vector to be an allocated vector; a motion compensation section allocating a neighboring allocated vector to a vector-not-allocated pixel of the interpolated frame; and a second pixel generation section generating a pixel of the interpolated frame and outputting a high-frequency image signal.04-01-2010
20120033737IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device and method that can suppress decrease in a prediction efficiency accompanied with a secondary prediction.02-09-2012
20110150091SCALED MOTION SEARCH SECTION WITH PARALLEL PROCESSING AND METHOD FOR USE THEREWITH - A scaled motion search section can be used in a video processing device that processes a video input signal that includes a plurality of pictures. The scaled motion search section includes a downscaling module that downscales the plurality of pictures to generate a plurality of downscaled pictures. A reduced-scale motion search module generates a plurality of motion vector candidates at a downscaled resolution, based on the plurality of downscaled pictures. The reduced-scale motion search module includes a column buffer that stores a column of reference data and generates the plurality of motion vector candidates based on a parallel processing of the column of reference data for a group of adjacent macroblock pairs.06-23-2011
20110150096LOCAL CONSTRAINTS FOR MOTION MATCHING - A method and apparatus for estimating the motion of an image region (the “center” region) from a source video frame to a target video frame. The motion estimation is locally constrained in that the estimated motion of the “center region” is affected by the estimated motion of neighboring regions. Advantageously, this may reduce common motion matching problems such as false and ambiguous matches. In one embodiment, the locally-constrained motion estimation may be implemented by biasing an error map of the center region using error maps of the neighboring regions.06-23-2011
20090316791VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding apparatus comprises a frame memory/predictive image generator having a first predictive mode for generating a predictive image signal by selecting a combination from among a plurality combinations of a reference image number and a plurality of predictive parameters, and a second predictive mode for generating a predictive image signal according to a predictive parameter computed based on reference image numbers of reference images and an image-to-image distance, and a variable-length encoder to select one of the first and second prediction modes by the number of reference images, and encode orthogonal transformation coefficient information concerning a predictive error signal of a predictive image signal with respect to input video signal, mode information indicating an encoding mode, motion vector information and combination of selected reference image number with predictive parameter index information indicating combination of selected reference image information.12-24-2009
20090316789DEVICE, METHOD AND PROGRAM FOR GENERATING INTERPOLATION FRAME - An interpolation frame generation device that generates an interpolation frame that interpolates image frames that are obtained by decoding a coded image signal that is coded by motion compensation, includes a motion vector deriving unit and an interpolation frame generating unit. The motion vector deriving unit acquires a motion compensation vector of a coded block that forms the coded image signal. The interpolation frame generating unit generates the interpolation frame in accordance with the motion vector of the image block that forms an image frame by using the motion compensation vector of the coded block as the motion vector of the image block.12-24-2009
20090296814DETERMING AN INTERMEDIATE IMAGE - Included are embodiments for determining an intermediate image. At least one embodiment includes receiving data associated with a first motion vector and receiving data associated with a second motion vector, wherein the first motion vector and the second motion vector define a first image and a second image. Some embodiments include determining a single set of potential pixel values for an intermediate image, the single set of pixel values being determined from the first motion vector and the second motion vector and creating the intermediate image from the single set of potential pixel values.12-03-2009
20090285299Method and Apparatus for Encoding Enhancement Layer Video Data - A method for improving the performance of the BLSkip mode in SVC includes the steps of upsampling the motion field of the base layer, interpolating the motion vectors for the intra MBs, interpolating the 8×8 block motion field to a 4×4 block motion field, and generating a MV predictor for a 4×4 block in BLSkip mode using neighbor candidates.11-19-2009
20090022226Method and apparatus for enhancing resolution of video image - Provided is a technology which can prevent deterioration of image quality when enhancing resolution of a predetermined key frame in a video sequence. Specifically, an apparatus to enhance resolution of a video frame is provided. The apparatus includes a frame extraction unit which extracts a key frame and one or more neighboring frames of the key frame from a video sequence; an upsampling unit which upsamples the key frame and the neighboring frames; a motion-vector search unit which calculates a motion vector of the upsampled key frame using the upsampled neighboring frames as reference frames; and a key-frame estimation unit which enhances quality of the upsampled key frame using temporal information obtained from the motion vector and spatial information in the key frame.01-22-2009
20090022225METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.01-22-2009
20090022224METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is preformed by simple shifts.01-22-2009
20090180541Video motion compensation - A method and apparatus are provided for video motion compensation suitable for use in decoding compressed video. An input buffer receives lines of blocks of video data and outputs lines of these to a first block transpose unit 07-16-2009
20090141803VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.06-04-2009
20080304569Method and apparatus for encoding and decoding image using object boundary based partition - Provided are a method and apparatus for encoding and decoding an image. The image encoding method includes searching for a reference block for obtaining partition information of a current block, referring to at least one reference picture; dividing the current block based on the partition information obtained from the reference block and performing inter prediction with regard to each of a plurality of partitions included in the current block; and encoding the current block based on a result of the inter prediction.12-11-2008
20080304568METHOD FOR MOTION-COMPENSATED FRAME RATE UP-CONVERSION - The method for motion-compensated frame rate up-conversion includes the step of detecting a film-mode video signal comprising a sequence of 3-2 pull-down frames, and extracting a sequence of feature frames from the sequence of 3-2 pull-down frames. In addition, a motion vector for each pair of the sequence of feature frames is calculated. Also, a plurality of intermediate frames between each pair of the sequence of feature frames is interpolated based on the corresponding motion vector.12-11-2008
20080267291Method for Deriving Coding Information for High Resolution Images from Low Resolution Images and Coding and Decoding Devices Implementing Said Method - The invention relates to spatially scalable encoding and decoding processes using a method for deriving coding information. More particularly, it relates to a method for deriving coding information used to encode high resolution images from coding information used to encode low resolution images when the ratio between high resolution and low resolution images dimensions is a multiple of 3/2. The method mainly comprises the following steps: 10-30-2008
20110255604METHOD OF BLOCK MATCHING-BASED MOTION ESTIMATION IN VIDEO CODING - Motion estimation is efficient to reduce redundant information among successive frames in video compression applications. The blocks in the current frame can be replaced with the neighboring blocks in the spatial directions in the previous frame with small errors. Many types of motion estimation methods such as Block Matching Algorithm are widely used to take a balance between a good image quality and the computation complexity. A Block Matching Algorithm named as New Cellular Search (NCS) Algorithm utilizes two particular search patterns: HCSP and VCSP, in the horizontal and vertical directions to search the best motion vector. Three performance measurements including peak signal to noise ration (PSNR), Average Search Point (ASP), and Mean Square Error (MSE) are used to compare this new search algorithm with some major motion estimations like FS, TSS, CS, and NCDS. The NCS is very efficient in computation reduction while keeping the almost same picture quality.10-20-2011
20110255603METHOD AND APPARATUS FOR RATE DISTORTION OPTIMISATION - There is provided a method of optimising Rate Distortion Optimisation candidate assessment in hardware apparatus, comprising determining which Rate Distortion Optimisation candidates out of aplurality of candidates are separately processable, determining a processing delay of critical portions of candidate assessment hardware, determining a rule set governing how the separately processable candidates may be ordered for processing, determining an optimised processing order for processing the separately processable candidate assessments, dependent on the processing delay of critical portions of the candidate assessment hardware and the determined rule set, and processing the candidates according to the determined processing order. There is also provided an apparatus for carrying out the improved Rate Distortion Optimisation method.10-20-2011
20110255599APPARATUS AND METHOD FOR MOTION ESTIMATION - A device for motion estimation (10-20-2011
20110255597Method and System for Reducing Flicker Artifacts - A method of encoding a frame of a digital video sequence as an intracoded frame (I-frame) is provided that includes performing motion estimation on a macroblock of the frame to compute a motion estimation measure and a motion vector for the macroblock, wherein a previous original frame of the digital video sequence that was encoded as a predictive coded frame (P-frame) is used as a reference frame, and selectively encoding the macroblock or a motion-compensated macroblock from a reconstructed P-frame based on the motion estimation measure and an adaptive flicker threshold, wherein the reconstructed P-frame was generated by decoding the P-frame.10-20-2011
20080253455High Frame Motion Compensated Color Sequencing System and Method - A system and method for generating high frame rate motion compensated color sequencing data for a color sequential display system. A high frame rate motion compensation color sequencing system (10-16-2008
20080212678COMPUTATIONAL REDUCTION IN MOTION ESTIMATION BASED ON LOWER BOUND OF COST FUNCTION - A method for motion estimation comprising the steps of (A) determining whether a cost of encoding one or more prediction parameters for a current search position is less than a current best cost, (B) when the cost of encoding the one or more prediction parameters for the current search position is less than the current best cost, updating the current best cost if the current best cost is greater than or equal to a sum of the cost for encoding the one or more prediction parameters for the current search position and a distortion measurement for the current search position and (C) ending the search when the current best cost is less than or equal to the cost of encoding the one or more prediction parameters for the current search position and less than a minimum cost for encoding one or more prediction parameters for one or more remaining search positions.09-04-2008
20080205523VIDEO CODING WITH EMBEDDED MOTION - A method, system, and apparatus for video coding and decoding with embedded motion information are disclosed. Image data is associated with basis functions and motion data. A method of identifying one or more basis functions which are representative of image data and associating the basis function with the motion data. A method or receiving information indicative of a basis function and of motion data and determining a motion vector based on the motion data. A system where portions of an image representative of basis functions are further associated with motion data at an encoder and then communicated to a decoder. A decoder produces at least portions of a predicted image using basis functions parameters and motion data.08-28-2008
20080205525Calculating Transformation Parameters For Image Processing - The invention relates to a method for obtaining transformation parameters. A camera motion can be modeled by providing a vector field of motion vectors describing estimated motion vectors, projecting the vector field on at least one axis, and deriving the transformation vector parameters from the projection of the vector fields. As the camera motion can be modeled by way of translation, scale and rotation, the projections of the vector field on the axis can be used.08-28-2008
20080205526DEVICE FOR AND METHOD OF ESTIMATING MOTION IN VIDEO ENCODER - A motion estimator and an estimation method for a video encoder to reduce power consumption by reducing the computational complexity of the motion estimator. In an upper step, a full search for a ±4 pixel search region for a 4×4 pixel block is performed at ¼ video resolution, to detect two motion vector candidates. In a medium step, a partial search for two vector candidates selected in the upper step and one vector candidate using a spatial correlation is performed for a 8×8 block within a ±1 or ±2 search region, to decide one motion vector candidate. In a lower step, a partial search for the ±1 or ±2 search region on 16×16 block is performed at full resolution, and a half pixel search for a motion vector candidate obtained in the lower step is performed to estimate a final motion vector. A ±4 pixel search region is operatively divided into four search regions, and the estimator sequentially searches the four ±2 pixel search regions to sequentially output SAD values.08-28-2008
20110164684IMAGE PROCESSING APPARATUS AND METHOD - The present invention relates to an image processing apparatus and method capable of suppressing an increase in the number of computations.07-07-2011
20110164683SCALABLE VIDEO STREAM DECODING APPARATUS AND SCALABLE VIDEO STREAM GENERATING APPARATUS - A scalable video stream generating apparatus according to the present invention sorts encoded images into a plurality of encoded-image streams based on whether or the encoded images are to be used as reference frames, and assigns different identifiers to the plurality of encoded-image streams. A scalable video stream decoding apparatus according to the present invention (i) receives a plurality of encoded-image stream generated by the scalable video stream generating apparatus according to the present invention, (ii) reorders, in order of decoding, encoded images included in at least one encoded-image stream extracted based on identifiers assigned to the plurality of encoded-image stream, and (iii) decodes the encoded images thus reordered. Thus, it is possible to provide a scalable video stream system having a simple arrangement.07-07-2011
20110164682SYSTEMS AND METHODS FOR VISUAL SIGNAL EXTRAPOLATION OR INTERPOLATION - The present invention relates to computer-based systems and methods for visual signal extrapolation or interpolation based on statistic similarity estimation. Specifically, a first and a second reference pictures are provided, and motion estimation is conducted on the first and second reference pictures to generate motion vectors indicative of movement of at least one of the first and second reference pictures in relation to the other. Subsequently, an estimate picture is generated by extrapolation or interpolation from the first and/or the second reference picture using the motion vectors, followed by optional refinement of the estimate picture. Statistic similarity estimation is used either in motion estimation or in refining the estimate picture, or a combination of both, so as to provide improved visual signals.07-07-2011
20110164681MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE DECODING DEVICE - When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.07-07-2011
20100284466VIDEO AND DEPTH CODING - Various implementations are described. Several implementations relate to video and depth coding. One method includes selecting a component of video information for a picture. A motion vector is determined for the selected video information or for depth information for the picture. The selected video information is coded based on the determined motion vector. The depth information is coded based on the determined motion vector. An indicator is generated that the selected video information and the depth information are coded based on the determined motion vector. One or more data structures are generated that collectively include the coded video information, the coded depth information, and the generated indicator.11-11-2010
20100284470METHOD OF CODING AND DECODING IMAGE - A method of simplifying the arithmetic operation in a global motion compensation process approximates the motion vector field of the whole image without using many parameters. Motion vectors in the global motion compensation are found by the interpolation and/or extrapolation of the motion vectors of a plurality of representative points 11-11-2010
20100284469Coding Device, Coding Method, Composite Device, and Composite Method - The present invention relates to an encoding device, an encoding method, a decoding device, and a decoding method which are capable of suppressing deterioration of compression efficiency.11-11-2010
20110075737TRANSCODER - A generated code amount accumulation part adds up the amounts of generated codes of pictures in 1 GOP which are encoded up to the current stage. An upper limit code amount accumulation part adds up the upper limit amounts of codes of the pictures in the 1 GOP which are encoded up to the current stage. A transmission load of an image transmission system is taken into consideration in the setting of the upper limit amount of codes. An update ratio setting part outputs an update instruction to lower a target rate when the accumulated amount of generated codes exceeds the accumulated upper limit amount of codes. The update ratio setting part does not output the update instruction for lowering the target rate when the accumulated amount of generated codes does not exceed the accumulated upper limit amount of codes. A transcoder can predict whether or not there is a possibility that the load of transmitting image data will increase while each picture in 1 GOP is encoded.03-31-2011
20100329346Determining a vector field for an intermediate image - The invention relates to a method for generating a motion vector field for an intermediate image disposed between a first and a second image.12-30-2010
20100329350MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - According to a picture coding method of the present invention, a coded picture identified by a picture number is stored, as a reference picture, into a storage unit; commands indicating correspondence between picture numbers and reference indices for designating reference pictures and coefficients used for generation of predictive images are generated; a reference picture being used when motion compensation is performed on a current block in a current picture to be coded is designated by a reference index; a predictive image is generated by performing linear prediction on a block being obtained by motion estimation within the designated reference picture, by use of a coefficient corresponding to the reference index; a coded image signal including a coded signal obtained by coding a prediction error being a difference between the current block in the current picture to be coded and the predictive image, the commands, the reference index and the coefficient is outputted. At that time, information indicating the maximum reference index value is coded and included into the coded image signal, and the commands indicating correspondence between at least one picture number and a plurality of reference indices are generated.12-30-2010
20100329349EFFICIENT USE OF STORAGE IN ENCODING AND DECODING VIDEO DATA STREAMS - Some embodiments facilitate encoding/decoding of a frame by organizing frame data in a storage structure in a novel manner. Specifically, in a portion of the storage structure allocated for a frame slice, used partition entries are stored in a first section of the allocated portion and unused partition entries are stored in a second section of the allocated portion, the first and second sections each comprising a continuous area of storage in the storage structure so that used partition entries are not interspersed with nonused partition entries. In some embodiments, additional data useful in the encoding or decoding of video data is determined and stored into the unused bytes of used partition entries (such as macroblock header data or canonical reference frame index data). In some embodiments, two or more identical partitions of a macroblock are coalesced into a single partition.12-30-2010
20100329345Motion vector estimator - A data processing apparatus is provided which is configured to receive a down-sampled source block and a down-sampled reference frame portion. The data processing apparatus comprises interpolation circuitry configured to interpolate between pixels of the down-sampled reference frame portion to generate a set of interpolated down-sampled reference frame blocks. Cost function calculation circuitry calculates a cost function value indicative of a difference between the down-sampled source block and each interpolated down-sampled reference frame block. Minimisation circuitry identifies the lowest cost function value and estimation motion vector generation circuitry generates an estimate motion vector independence thereon.12-30-2010
20100329339TRANSMISSION APPARARUS, RECEPTION APPARATUS, FRAME RATE CONVERSION SYSTEM, AND FRAME RATE CONVERSION METHOD - [Object] To provide a transmission apparatus, a reception apparatus, a frame rate conversion system, and a frame rate conversion method that are capable of transmitting reference control information even when a data amount of the reference control information is large.12-30-2010
20110038419METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE BY CONTROLLING ACCURACY OF MOTION VECTOR - Disclosed are a method and apparatus for encoding an image whereby a current coding unit is predicted by variably controlling accuracy of a motion vector and motion compensation is performed according to the result of prediction, and a method and apparatus for decoding an image encoded by the method and apparatus for encoding an image.02-17-2011
20110038421Apparatus and Method for Generating a Coded Video Sequence by Using an Intermediate Layer Motion Data Prediction - In the scalable video coding in connection with motion compensation both in a base layer and in an enhancement layer, a prediction of the motion data of the enhancement layer is performed by using the motion data of the base layer to obtain a scalability concept, which provides, on the one hand, a maximum flexibility for the calculation of the motion data of the different layers and, on the other hand, allows a lower bit rate.02-17-2011
20110038420METHOD AND APPARATUS FOR ENCODING/DECODING MOTION VECTOR - Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding the motion vector includes: selecting, as a mode of encoding information about a motion vector predictor of the current block, a first mode in which information indicating the motion vector predictor from among at least one motion vector predictor is encoded or a second mode in which information indicating generation of the motion vector predictor based on blocks or pixels included in a previously encoded area adjacent to the current block is encoded; determining the motion vector predictor of the current block according to the selected mode and encoding the information about the motion vector predictor of the current block; and encoding a difference vector between the motion vector of the current block and the motion vector predictor of the current block.02-17-2011
20110135002MOVING IMAGE CODING DEVICE AND METHOD - The present invention relates to a moving image coding apparatus and method involving the simultaneous parallel running of respective modules, namely: a segment-unit-coding module in which an input image frame is divided into segment units and the integer pel (integer pixel) motion is estimated while at the same time the 1/n pixel images are generated with respect to the segments of the image coded in the coding module; and a macroblock-unit-coding module in which the segments of the image frame whose the integer pel motion has been estimated in the segment-unit-coding module are received as input in the form of macroblock units and are coded in macroblock units through the 1/n pixel motion estimation. By separating the coding units into different modules and employing the techniques of parallel processing and pipelining, the present invention makes it possible to effect high-speed encoding with reduced delay in the coding rate due to differences in the processing speeds of the respective modules.06-09-2011
20110135006MOVING IMAGE ENCODING DEVICE AND MOVING IMAGE DECODING DEVICE - This invention corrects a motion-compensated image by a method suitable for the local characteristics of the moving image, while preventing an increase in an amount of encoded data. A moving image encoding device of this invention includes three motion-compensated image correcting sections (06-09-2011
20110135005Encoder Optimization of Stereoscopic Video Delivery Systems - Controlling a feature of an encoding process for regions of an image pattern representing more than one image when the regions include an amount of disparity in the represented images that would result in cross-contamination between the represented images if encoded with the feature. The control may be, for example, any of turning the encoding feature off, using the encoding feature less often than when encoding an image pattern representing a single image, negatively biasing the encoding feature, and enabling the encoding feature for regions determined to have zero or near zero disparity and disabling the feature for all other regions. The represented images comprise, for example, any of a stereoscopic view, multiple stereoscopic views, multiple views of a same scene, and multiple unrelated views.06-09-2011
20110135004H.264 TO VC-1 AND VC-1 TO H.264 TRANSCODING - A method for transcoding from an H.264 format to a VC-1 format. The method generally comprises the steps of (A) decoding an input video stream in the H.264 format to generate a picture having a plurality of macroblock pairs that used an H.264 macroblock adaptive field/frame coding; (B) determining a mode indicator for each of the macroblock pairs; and (C) coding the macroblock pairs into an output video stream in the VC-1 format using one of (i) a VC-1 field motion compensation mode coding and (ii) a VC-1 frame motion compensation mode coding as determined from the mode indicator.06-09-2011
20110135001HIERARCHICAL MOTION ESTIMATION METHOD USING DYNAMIC SEARCH RANGE DETERMINATION - A hierarchical motion estimation method implemented in a plurality of levels is disclosed. The hierarchical motion estimation method is used for estimating motion vectors of a frame. The frame being partitioned into blocks at a first level, and each block of the first level is partitioned into a plurality of blocks at a second level. The method includes selecting reference blocks at the first level for a specific block at the second level and determining a search range for the specific block at the second level by referring to motion vectors, which are known, of the reference blocks at the first level. By using such a method, the motion vectors of a frame can be rapidly and accurately estimated.06-09-2011
20110255600METHOD FOR PERFORMING LOCALIZED MULTIHYPOTHESIS PREDICTION DURING VIDEO CODING OF A CODING UNIT, AND ASSOCIATED APPARATUS - A method for performing localized multihypothesis prediction during video coding of a coding unit includes: dividing the coding unit into a plurality of sub-coding units; and performing motion vector prediction of each of the sub-coding units. More particularly, the step of performing motion vector prediction of each of the sub-coding units further includes: obtaining a plurality of motion vectors for multihypothesis motion compensation of a specific sub-coding unit of the sub-coding units from a plurality of other sub-coding/coding units. The method further includes performing multihypothesis motion compensation on the specific sub-coding unit according to the plurality of motion vectors, and more particularly, includes utilizing a linear combination of a plurality of pixel values of the plurality of other sub-coding/coding units as a predicted pixel value of the specific sub-coding unit. An associated apparatus is also provided.10-20-2011
20100309982 METHOD AND DEVICE FOR SEQUENCE DECODING WITH ERROR CONCEALMENT - The invention concerns a method for decoding a video sequence encoded according to a predictive format, which video sequence includes predicted images containing encoded residual data representing differences between the respective predicted image and a respective reference image in the video sequence. The method of the invention comprises, applying to a current image which contains at least one area which is to be reconstructed, the steps of: 12-09-2010
20110261884Multi-Bus Architecture for a Video Codec - Embodiments of the present invention relate to a multi-bus architecture within a video codec that discretely and efficiently transports video components within the codec. This multi-bus architecture provides a relatively more efficient transport mechanism because the various buses are designed to specifically address unique characteristics of the video components or parameters being processed within the codec.10-27-2011
20120147966METHOD AND APPARATUS FOR ENCODING/DECODING MOTION VECTOR - Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding the motion vector includes: selecting, as a mode of encoding information about a motion vector predictor of the current block, a first mode in which information indicating the motion vector predictor from among at least one motion vector predictor is encoded or a second mode in which information indicating generation of the motion vector predictor based on blocks or pixels included in a previously encoded area adjacent to the current block is encoded; determining the motion vector predictor of the current block according to the selected mode and encoding the information about the motion vector predictor of the current block; and encoding a difference vector between the motion vector of the current block and the motion vector predictor of the current block.06-14-2012
20120147964MOVING PICTURE CODING APPARATUS AND MOVING PICTURE DECODING APPARATUS - A video encoder (06-14-2012
20120147963IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device and method, which can handle local nature within a frame.06-14-2012
20120147962MOTION VECTOR EXTRACTION METHOD AND APPARATUS - A motion vector extraction method includes: deciding on a search start position in an original video and performing a spiral motion search; and determining whether or not to perform a search in a sub-sampling video, during P picture search.06-14-2012
20120147961USE OF MOTION VECTORS IN EVALUATING GEOMETRIC PARTITIONING MODES - During a video encoding process, rectangular prediction units (PUs) for a coding unit (CU) are generated. Furthermore, a geometric partitioning mode is used to generate a first and a second geometric PU for the CU. The first and second geometric PUs are associated with different geometric partitions of a sample block of the CU. One of the rectangular PUs is identified as overlapping the first geometric PU. The motion vector of the identified rectangular PU is used to identify a given area of a reference frame. The given area of a reference frame is then used as a starting point of a search to identify a reference sample for the first geometric PU. A motion vector for the first geometric PU indicates a position of the reference sample relative to a position of the first geometric PU. A prediction block is generated using the motion vector for first geometric PU.06-14-2012
20120147958Parallel Video Encoding Based on Complexity Analysis - Embodiments of the invention provide techniques for encoding chunks of a video file in parallel. Embodiments may divide a source video file into a plurality of chunks, and may encode each chunk at a rate based upon complexity data associated with the chunk. The encoded chunks may then be reassembled to produce an encoded video file.06-14-2012
20100183074IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS AND COMPUTER READABLE STORAGE MEDIUM - An image processing method includes: a frame selection step for selecting a base frame and a reference frame; an image displacement amount calculation step for calculating an image displacement amount between the reference frame and the base frame; a weighting coefficient generation step for generating a weighting coefficient using at least one of an encoding type of the reference frame and the motion information of the encoded moving image data; and an image quality improvement step for improving an image quality of the base frame using the image displacement amount calculated in the image displacement amount calculation step and the weighting coefficient generated in the weighting coefficient generation step.07-22-2010
20090207917MOTION VECTOR DERIVATION METHOD, MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - A motion vector derivation unit includes a comparison unit for comparing a parameter TR08-20-2009
20110255596FRAME RATE UP CONVERSION SYSTEM AND METHOD - The invention is directed to a frame rate up conversion (FRUC) system and method. A motion estimation (ME) unit is configured to generate at least one motion vector (MV) according to a frame input. A triple-line buffer based motion compensation (MC) unit is configured to generate an interpolated frame according to the MV, a reference frame and a current frame, thereby generating a frame output with a frame rate higher than a frame rate of the frame input.10-20-2011
20110255601PREDICTION OF AN IMAGE BY COMPENSATION DURING FORWARD MOVEMENT - A method is provided for predicting an image by compensation during forward movement from at least one reference image. For at least one block of a reference image, referred to as a reference block, the prediction method includes the following steps: determining at least one piece of movement information, representing a movement between said reference block and a matching block in the image to be predicted; determining at least one enlarged block, including the reference block and at least one point of a block adjacent to said reference block in the reference image; and determining a prediction value for at least one point of the image to be predicted from the at least one enlarged block and from the movement information determined for the reference block.10-20-2011
20110255598METHOD FOR PERFORMING LOCAL MOTION VECTOR DERIVATION DURING VIDEO CODING OF A CODING UNIT, AND ASSOCIATED APPARATUS - A method for performing local motion vector derivation during video coding of a coding unit includes: processing a plurality of sub-coding units in the coding unit; and performing motion vector prediction of each of the sub-coding units. More particularly, the step of performing motion vector prediction of each of the sub-coding units further includes: deriving a motion vector of a specific sub-coding unit of the sub-coding units by utilizing at least one motion vector of at least one other sub-coding/coding unit. Thus, the method performs motion compensation on the specific sub-coding unit according to the motion vector of the specific sub-coding unit. An associated apparatus is also provided.10-20-2011
20080219352Motion vector searching apparatus, motion vector searching method and storage medium for storing motion vector searching program - A motion vector searching apparatus to which a reference image, an object image and weight parameters for the reference image are inputted and searches a motion vector based thereon is provides. The motion vector searching apparatus includes an inverse weighting section that generates an inverse weighted object image by performing, on the object image using the weight parameter, a weighting inverse from a weighting performed on the reference image using the weight parameter; an image comparing section that compares the generated inverse weighted object image with the reference image to obtain a comparison value indicating a degree of approximation between the two images; and a determination section that determines an optimum motion vector from the comparison value.09-11-2008
20080219351Apparatus of Predictive Coding/Decoding Using View-Temporal Reference Picture Buffers and Method Using the Same - Provided are an apparatus and method for predictive coding/decoding for improving a compression rate of multiview video using one or two additional reference frame buffers. The predictive encoding apparatus includes: a multiview reference picture providing unit for providing a reference picture for a predictive encoding according to temporal and spatial GOP structure information; a prediction unit for creating a vector by predicting which part of the reference picture inputted from the multiview reference picture providing unit is referred by a picture to currently encode; a transforming and quantizing unit for obtaining a difference signal between the predicted signal inputted from the prediction unit and a picture signal to currently encode, transforming the obtained difference signal, quantizing the transformed signal, and compressing the quantized signal; and an entropy encoding unit for encoding the quantized signal and the vectors according to a predetermined scheme and outputting the encoded signal.09-11-2008
20100202538VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-12-2010
20110096840VIDEO ENCODING METHOD, VIDEO ENCODING APPARATUS, VIDEO ENCODING PROGRAM AND STORAGE MEDIUM OF THE SAME - A motion detection portion of a video encoding apparatus conducts motion detection on each of frame macroblocks and field macroblocks to calculate motion vectors and respective detection cost. A motion vector evaluation value calculation portion calculates an evaluation value of the size of motion vectors. A motion vector threshold determination portion compares the evaluation value of the size of motion vectors to a predetermined threshold to determine whether the target area is a moving area or a still area. If the target area is a moving area, it is determined whether frame or field macroblock mode is to be used by comparing the detection costs. If the target area is a still area, it is determined whether frame or field macroblock mode is to be used in accordance with the size of the sum of absolute values of differences between neighboring pixels in a vertical direction regarding the frame macroblock and field macroblock.04-28-2011
20110096839METHODS AND APPARATUS FOR VIDEO CODING AND DECORING WITH REDUCED BIT-DEPTH UPDATE MODE AND REDUCED CHROMA SAMPLING UPDATE MODE - Methods and apparatus are provided for video coding and decoding with reduced bit-depth update mode and reduced chroma sampling update mode. An apparatus includes an encoder for encoding at least a portion of a picture using at least one of a reduced bit-depth update mode and a reduced chroma sampling update mode that respectively reduces at least one of a bit-depth and a chroma sampling of a residue signal corresponding to the portion.04-28-2011
20100202537VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-12-2010
20100215106EFFICIENT MULTI-FRAME MOTION ESTIMATION FOR VIDEO COMPRESSION - There is disclosed a method of digital signal compression, coding and representation, and more particularly a method of video compression, coding and representation system that uses multi-frame motion estimation and includes both device and method aspects. The invention also provides a computer program product, such as a recording medium, carrying program instructions readable by a computing device to cause the computing device to carry out a method according to the invention.08-26-2010
20100215103Method and apparatus for weighted prediction for scalable video coding - There are provided scalable video encoders, scalable video decoders, and corresponding methods for scalable video encoding and decoding. A scalable video encoder includes an encoder (08-26-2010
20100183073Method and Apparatus for Variable Accuracy Inter-Picture Timing Specification for Digital Video Encoding - A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.07-22-2010
20110103487METHOD AND DEVICE FOR ENCODING A SEQUENCE OF IMAGES IMPLEMENTING A TEMPORAL PREDICTION, CORRESPONDING SIGNAL, DATA STORAGE MEDIUM, METHOD AND DECODING DEVICE AND COMPUTER PROGRAM PRODUCTS - A method and apparatus are provided for coding a sequence of images. The method includes a step of coding at least one block of a current image of the sequence, implementing a prediction associating the block with at least one corresponding block in a reference image. The prediction includes the following steps, for at least one given block of the current image or of the reference image: determination of a plurality of control vectors for the block; at least one splitting of the block into sub-blocks; determination of a plurality of control vectors for the sub-blocks; and determination of a prediction value for at least one point of the current image. Moreover, the method includes a step of inserting, into a signal representative of the sequence, information regarding reconstruction of the control vectors for the given block.05-05-2011
20090238279Motion-compensated prediction of inter-layer residuals - Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video. Using motion compensation for the inter-layer residual video facilitates the use of separate motion vectors and separate codecs for the base layer video and inter-layer residual video.09-24-2009
20110200112METHOD AND APPARATUS FOR ENCODING/DECODING MOTION VECTORS OF MULTIPLE REFERENCE PICTURES, AND APPARATUS AND METHOD FOR IMAGE ENCODING/DECODING USING THE SAME - A motion vector encoding apparatus includes: an optimum motion vector determiner for determining optimum motion vectors for multiple reference pictures with respect to a current motion vector of a current block; a motion vector encoding mode determiner for determining a motion vector encoding mode according to whether a motion vector decoding apparatus can predict the optimum motion vectors for the multiple reference pictures; and a motion vector encoder for generating and encoding motion information on the multiple reference pictures by using the optimum motion vectors for the multiple reference pictures or preset default motion vectors for the multiple reference pictures according to the motion vector encoding mode, and generating motion vector encoded data by encoding the motion vector encoding mode. The motion vector encoding apparatus can more accurately predict a predicted motion vector of the current motion vector for multiple reference pictures, so as to improve the compression efficiency.08-18-2011
20100202536VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-12-2010
20100166074 METHOD AND APPARATUS FOR ENCODING OR DECODING FRAMES OF DIFFERENT VIEWS IN MULTIVIEW VIDEO USING GLOBAL DISPARITY - The present invention relates to a method and apparatus for encoding a multi-view video and a method and apparatus for decoding a multi-view video, and more particularly, to a method and apparatus for encoding a multi-view video and a method and apparatus for decoding a multi-view video that can perform encoding and decoding in consideration of global disparity between pictures captured at two different viewpoints to remove spatial redundancy. An embodiment of the invention provides an encoder for compressing data for pictures captured at different viewpoints using global disparity in a multi-view video. The encoder includes: an input unit that receives pictures captured at two or more viewpoints; a reference picture generating unit that generates a new reference picture on the basis of the global disparity between a target picture and a reference picture; and a motion predicting unit that calculates motion vectors of the target picture on the basis of the reference picture.07-01-2010
20100166073Multiple-Candidate Motion Estimation With Advanced Spatial Filtering of Differential Motion Vectors - Embodiments include a motion estimation method performed in a parallel processing system that determines a list of several candidate motion vectors for a macroblock of a video image and retains them through multiple computation passes. All candidate motion vectors are used as potential neighboring predictors, so that the best combination of differential vectors rises to the top of the candidate list. Numerous combinations of differential motion vectors are considered during the process that compares motion vectors among up to eight neighboring macroblocks, instead of simply between pairs of macroblocks. The motion estimation system is configured to use a large number of compute engines, such as on a highly parallel GPU platform. This is achieved by having no dependencies between macroblocks except one per pass. This allows the number of calculations per pass to be very large.07-01-2010
20100166075METHOD AND APPARATUS FOR CODING VIDEO IMAGE - A method and apparatus for coding a video image is provided, in which a first macro block is coded with intra coding modes, the number of which corresponds to the first macro block, a first intra coding mode having a minimum value and a first minimum value to which the first intra coding mode is applied are acquired, the first minimum value is compared with a threshold that is set for fast coding mode search, and it is determined whether to code a second macro block with intra coding modes, the number of which corresponds to the second macro block, based on the comparison.07-01-2010
20100166071Method and Apparatus for Motion Projection Error Concealment in Block-Based Video - There are provided a method and apparatus for block-based error concealment. The apparatus includes an error concealment module for concealing a current block in a lost picture of a video sequence by projecting positions of at least one block in a correctly received picture of the video sequence to a position of the current block in the lost picture using motion vectors of the at least one block in the correctly received picture so as to obtain a resultant projection, and selecting one of the at least one block in the correctly received picture based upon an amount of overlap in the resultant projection. The current block in the lost picture is then concealed using a motion vector of the selected one of the at least one block in the correctly received picture.07-01-2010
20100202535VIDEO ENCODING DECODING METHOD AND DEVICE AND VIDEO - A video encoding decoding method and device and a video codec are provided. The video encoding method includes the following steps. A first view picture is basic-layer encoded as a reference view picture, prediction information is extracted in combination with a second view picture, and the second view picture is re-created. A residual value is calculated according to a re-created second view picture and the original second view picture. When the residual value is greater than a threshold, both the residual value and the prediction information are enhanced-layer encoded simultaneously; otherwise, only the prediction information is enhanced-layer encoded. Encoded information is obtained by multiplexing the enhanced-layer encoding with the basic-layer encoding of the first video picture. The video decoding method includes the following steps. After de-multiplex, basic-layer encoded information and enhanced-layer encoded information are decoded respectively to obtain a first view picture, prediction information, and a residual value, and then a second view picture is re-created. The embodiments of the invention can realize the effective compression of stereo video data, reduce an encoding complexity, and are compatible with the conventional two dimensional displaying, so as to correctly and easily re-create a stereo view picture.08-12-2010
20100158122METHOD AND DEVICE FOR APPROXIMATING A DC COEFFICIENT OF A BLOCK OF PIXELS OF A FRAME - A method and a device for approximating a DC coefficient of a first block of pixels of a first frame are proposed. The method comprises: calculating a luminance DC average value based on DC coefficients of first frame's macro-blocks without an approximation error; and determining the DC coefficient of the first block based on the DC coefficient of a second block, wherein the second block is a part of a second frame, which is a reference frame of the first frame, the second block overlapping with a reference block of the first block and having the closest DC coefficient to the luminance DC average value.06-24-2010
20100158121MOTION VECTOR CODING MODE SELECTION METHOD AND CODING MODE SELECTION APPARATUS AND MACHINE READABLE MEDIUM USING THE SAME - A coding mode selection method for selecting a coding mode for motion vector estimation is disclosed. The method includes the following steps. First, a first coding mode is selected to perform motion vector estimation for a macroblock having M sub-blocks. M motion vectors corresponding to the M sub-blocks are separately calculated. It is determined whether correlations for the M motion vectors match to a predetermined condition. If not, the first coding mode is selected and the M motion vectors are utilized to perform a motion vector estimation; and if so, a second coding mode is selected and the N motion vectors corresponding to the second coding mode are utilized to perform the motion vector estimation, wherein the N motion vectors are generated by using the M motion vectors and 1≦N06-24-2010
20100195735APPARATUS AND METHOD FOR CONVERTING SIGNALS - An image-coding format converting apparatus comprising an EMPEG2 image decoder 08-05-2010
20100195736MOVING IMAGE DECODER, MOVING IMAGE DECODING METHOD, AND COMPUTER-READABLE MEDIUM STORING MOVING IMAGE DECODING PROGRAM - Matching processing reconstructs divided lost regions, which are obtained by dividing a lost region in an image of a Frame t into regions each including N×N pixels as a unit, from corresponding regions of an estimated image of a previously reconstructed Frame t−1 using a boundary matching method. Estimation pre-processing calculates local regions of the estimated image of Frame t−1, which correspond to local regions of each divided lost region in the image of Frame t using a block matching method, and calculates second motion vectors for respective pixels from local regions associated with region in the image of Frame t−1 for all pixels L×L included in each local region of divided lost region. Original image estimation processing defines a transition model and observation model from the result obtained by the estimation pre-processing, and estimates an original image using a Kalman filter algorithm.08-05-2010
20100195737VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-05-2010
20100195734LOW-POWER AND HIGH-PERFORMANCE VIDEO CODING METHOD FOR PERFORMING MOTION ESTIMATION - A method for performing motion estimation is provided. The method includes the following steps: selecting a current block in a current frame; comparing the current block with an initial reference block in a reference frame to obtain an initial comparison parameter, wherein position of the initial reference block in the reference frame is corresponding to position of the current block in the current frame; determining a predicted search window corresponding to the current block based on the initial comparison parameter; and comparing the current block with reference blocks in the predicted search window to obtain comparison parameters respectively, whereby a best-match reference block in the predicted search window is determined.08-05-2010
20100067580NON-SCALABLE TO SCALABLE VIDEO CONVERTER - Systems and methods are for implementing a NSV2SV converter that converts a non-scalable video signal to a scalable video signal. In an implementation, a non-scalable video signal encoded in H.264/AVC standard is decoded and segmented into spatial data and motion data. The spatial data is resized into a desired resolution by down-sampling the spatial data. The motion data is also resized in every layer, except in the top layer, of a scalable video coding (SVC) encoder by using an appropriate measure. Further, the motion data is refined based on the resized spatial data in every layer of the SVC encoder. The refined motion data and the down-sampled spatial data are then transformed and entropy encoded in the SVC standard in every layer. The SVC encoded output from every layer is multiplexed to produce a scalable video signal.03-18-2010
20100067579VIDEO ENCODING METHOD AND DECODING METHOD, APPARATUSES THEREFOR, PROGRAMS THEREFOR, AND STORAGE MEDIA FOR RECORDING THE PROGRAMS - A video encoding method, in which a video signal consisting of two or more signal elements is targeted to be encoded, includes a step of setting a downsampling ratio is set for a specific signal element in a frame, in accordance with the characteristics in the frame; and a step of generating a target video signal to be encoded, by subjecting the specific signal element in the frame to downsampling in accordance with the set downsampling ratio. The frame may be divided into partial areas in accordance with localized characteristics in the frame; and a downsampling ratio for a specific signal element in these partial areas may be set in accordance with the characteristics in each partial area.03-18-2010
20100040146Method and apparatus for multiple pass video coding and decoding - There are provided a video encoder, a video decoder and corresponding method for encoding and decoding video signal data using a multiple-pass video encoding scheme. The video encoder includes a motion estimator and a decomposition module. The motion estimator performs motion estimation on the video signal data to obtain a motion residual corresponding to the video signal data in a first encoding pass. The decomposition module, in signal communication with the motion estimator, decomposes the motion residual in a subsequent encoding pass.02-18-2010
20100034279VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-11-2010
20100202534VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-12-2010
20090310680Method and Apparatus for Decoding/Encoding a Video Signal - A method of decoding a current layer using inter-layer prediction is disclosed. The present invention includes determining whether a position of a current block is included in a sampled reference layer, the current block included in the current layer, obtaining a plurality of prediction flags when the position of the current block is included in the sampled reference layer, and decoding the current layer using the plurality of the prediction flags.12-17-2009
20110051813UTILIZING THRESHOLDS AND EARLY TERMINATION TO ACHIEVE FAST MOTION ESTIMATION IN A VIDEO ENCODER - Fast motion estimation in video encoding may be implemented using early termination. One or more section sizes in a current video picture may be determined for which a portion of motion estimation can be skipped during encoding of the current video picture. The portion of motion estimation may be performed on the current video picture on a section-by-section basis only for one or more section sizes not skipped. The picture may be encoded using the motion estimation performed in b) to produce an encoded picture. The resulting encoded picture may be stored or transmitted. The speedup achieved by skipping part of motion estimation may be regulated by selection of a quality control value.03-03-2011
20100202533VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-12-2010
20090296817MOTION IMAGE DISTRIBUTION SYSTEM, MOTION IMAGE DISTRIBUTION METHOD, SERVER FOR MOTION IMAGE DISTRIBUTION SYSTEM, AND USER TERMINAL FOR MOTION IMAGE DISTRIBUTION SYSTEM - A motion image distribution system includes a server and a use terminal. The server generates a feature quantity table CHT12-03-2009
20090274216DYNAMIC IMAGE ENCODING DEVICE, DYNAMIC IMAGE ENCODING METHOD, DYNAMIC IMAGE ENCODING PROGRAM, DYNAMIC IMAGE DECODING DEVICE, DYNAMIC IMAGE DECODING METHOD, AND DYNAMIC IMAGE DECODING PROGRAM - The object is to compensate motion at high precision even for an image having different characteristics in the horizontal direction and vertical direction, while decreasing code quantity of filter coefficients when a reference image with the fractional image accuracy is generated using a filter of each frame and is encoded and decoded with compensating motion. A video encoding device 11-05-2009
20110188578METHOD AND DEVICE FOR CODING - The invention relates to a method for coding a sequence of images, comprising the following steps: 08-04-2011
20110188576MOTION ESTIMATION AND COMPENSATION PROCESS AND DEVICE - In the motion estimation and compensation process for video frames, blocks O of pixels are considered. A number k of bit planes in a block O in a video frame F are compared with blocks O08-04-2011
20110188577Method and system for parallelizing video compression - Video data compression performance is improved through the use of multiple processors operating in parallel. The parallel processors perform motion or spatial estimation, where portions of a video frame are found to be similar to portions in reference frames. Because this estimation operation can be very time consuming, the use of multiple processors can reduce the overall time required, or they can enable higher-performing algorithms that might otherwise require a prohibitively long processing time. The motion or spatial estimation results are applied to reconstructed versions of the video frame data to enable high levels of video data compression.08-04-2011
20100158123Picture processing apparatus, picture processing method, and program - A picture processing apparatus is disclosed which includes: a memory; and a decoding circuit configured to decode encoded picture data; wherein the memory holds first and second fields of the decoded picture in different areas while holding field planes of a plurality of reference planes in different areas; the decoding circuit includes a motion compensation circuit configured to effect motion-compensating prediction by dividing into a plurality of divisions each of macro blocks making up the picture data in order to perform motion compensation in accordance with the motion-compensating prediction; and, upon transferring the decoded picture held in the memory during a motion compensation process, the compensation circuit rearranges transfer requests to at least either the same reference plane or the same field plane within a divided macro block on the basis of macro block division information and reference picture information, before transferring the rearranged transfer requests consecutively to the memory.06-24-2010
20090175347Method of decoding a macroblock based on a macroblock level of the macroblock - In one embodiment, the method includes obtaining a reference frame picture list including multiple reference frame pictures and determining reference frame picture index of the multiple reference frame pictures in the reference frame picture list based on display order information for the multiple reference frame pictures. Motion vector information for the current field macroblock and a reference field picture index associated with the current field marcoblock are obtained. A reference field picture having a different parity from the current field macroblock is selected if the reference field picture index is an odd value. The current macroblock is decoded based on the motion vector information and the selected reference field picture.07-09-2009
20090175345Motion compensation method and apparatus - Provided is a motion compensation method and apparatus. The motion compensation method includes performing register setting for motion compensation of an m07-09-2009
20090175343HYBRID MEMORY COMPRESSION SCHEME FOR DECODER BANDWIDTH REDUCTION - A method for reducing memory bandwidth in a video decoder begins by performing a data reduction operation on a decoded first coded image to produce a second set of image data. The second set of image data stored and is selectively used for subsequent image decoding, thereby reducing the memory bandwidth. The data reduction operation can include image downsampling, wherein the pixel density is reduced by a factor of two in each of the vertical and horizontal directions.07-09-2009
20090175344Method and Apparatus for Detection and Concealment of Reference and Non-Reference Video Frames - There are provided method and apparatus for detecting and concealing reference and non-reference video frames. A video decoder includes an entropy decoder, an error detector, and an error concealer. The entropy decoder is for decompressing a video bitstream intended to have a fixed frame rate and parsing the decompressed video bitstream to find picture order counts for frames of the decompressed video bitstream. The error detector is for determining that a particular frame of the decompressed video bitstream is missing based upon the picture order counts. The error concealer is for concealing the particular frame. The method is accomplished by decompressing and parsing the video bitstream to find picture order counts for frames of the decompressed video bitstream and then determining that a particular frame of the decompressed video bitstream is missing based upon comparison of their associated picture order counts, and then concealing that particular frame.07-09-2009
20100027675VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027677VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027672VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027671VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027670VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027668VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027667MOTION ESTIMATION FOR UNCOVERED FRAME REGIONS - In a motion estimation for a group of at least one image element in a frame of a video sequence, a global motion is determined between the frame and a reference frame. Uncovered groups present in an uncovered region of the frame are identified based on the determined global motion. The global motion is assigned as motion representation for these identified uncovered groups. The assigned motion representation is useful for constructing new frames in the sequence in a frame rate up-conversion.02-04-2010
20100027665VIDEO ENCODER WITH AN INTEGRATED TEMPORAL FILTER - A video encoder with an integrated temporal filter, which has an output carrying a sequence of encoded frames, includes: an input receiving input frame data; a temporal filter receiving the input frame data from the input and producing filtered frame data; motion processing modules receiving reconstructed frames derived from the sequence of encoded frames and the filtered frame data from the temporal filter and producing a residual error signal output; and a coder module which receives the input frame data and the residual error signal and produces the sequence of encoded frames. A method of encoding video includes: receiving a current frame to be encoded into a motion estimator and a temporal filter substantially at one time; receiving a previously encoded reference frame; generating a reconstructed motion-compensated reference frame from the previously encoded reference frame; and determining from the motion-compensated reference frame and the current frame whether and how much blending to perform between the motion compensated reference frame and the current frame.02-04-2010
20100027664Image Processing Apparatus and Image Processing Method - According to one embodiment, an image processing apparatus includes a resolution increasing module and a moving-image improving module. The resolution increasing module that performs, on receipt of a first video signal with first resolution, super resolution conversion on the first video signal to obtain a second video signal with second resolution that is higher than the first resolution by estimating an original pixel value from the first video signal and increasing the pixels. The moving-image improving module that increases the frame rate of the second video signal after the super resolution conversion.02-04-2010
20100020880FIELD PROGRAMMABLE OBJECT ARRAY HAVING IMAGE PROCESSING CIRCUITRY - A field programmable object array integrated circuit has video data compression capability. The integrated circuit comprises an array of programmable objects and a video compression co-processor communicatively coupled to the array of objects. The video compression co-processor comprises a set of search engines and a subpixel engine. The subpixel engine can interpolate subpixels from integer pixels and shift the integer pixels by a predetermined number of subpixels. The search engines can perform a plurality of sum of absolute differences (SAD) computations between search window pixels and macroblock pixels to locate the best SAD value using either integer pixels and/or the interpolated subpixels.01-28-2010
20100020878Transcoding for Systems Operating Under Plural Video Coding Specifications - A system and method that computes a threshold based on an average sum of absolute residual (SAR) values and a standard deviation, each SAR corresponding to the sum of absolute values of the residual signal of a non-intra encoded macroblock in a frame of a first video stream encoded according to a first video specification, decodes the macroblocks of the frame, compares a SAR of one of the macroblocks to the threshold, the one of the macroblocks having a first motion vector; and provides the first motion vector for encoding the one of the macroblocks according to a second video specification if the SAR of the one of the macroblocks is less than the threshold.01-28-2010
20100020877MULTIPLE REFERENCE FRAME MOTION ESTIMATION IN VIDEO CODING - Multiple reference frame motion estimation for video frame blocks is provided. A plurality of copies of a block list of a reference frame can be loaded into texture memory. Encoding of video blocks of the video frame can be ordered to allow concurrent encoding of the video blocks. Furthermore, motion vector prediction can be performed concurrently for independent video blocks, the motion vectors can be related to each one of the plurality of copies of the block list of the reference frame and determined for the at least a portion of the plurality of blocks ordered for concurrent encoding. Additionally, a fast motion estimation algorithm can be concurrently performed on a number of video blocks to search surrounding blocks and compute motion vectors. Further, concurrent processing of multiple slices can be performed. Such concurrent processes can leverage the parallel architecture of at least one graphical processing unit.01-28-2010
20100020876Method for Modeling Coding Information of a Video Signal To Compress/Decompress the Information - A method for context modeling of coding information of a video signal for compressing or decompressing the coding information is provided. An initial value of a function for probability coding of coding information of a video signal of an enhanced layer is determined based on coding information of a corresponding video signal of a base layer.01-28-2010
20110216833SHARING OF MOTION VECTOR IN 3D VIDEO CODING - Joint coding of depth map video and texture video is provided, where a motion vector for a texture video is predicted from a respective motion vector of a depth map video or vice versa. For scalable video coding, depth map video is coded as a base layer and texture video is coded as an enhancement layer(s). Inter-layer motion prediction predicts motion in texture video from motion in depth map video. With more than one view in a bit stream (for multi view coding), depth map videos are considered monochromatic camera views and are predicted from each other. If joint multi-view video model coding tools are allowed, inter-view motion skip issued to predict motion vectors of texture images from depth map images. Furthermore, scalable multi-view coding is utilized, where interview prediction is applied between views in the same dependency layer, and inter-layer (motion) prediction is applied between layers in the same view.09-08-2011
20110216832STATISTICAL CONTENT OF BLOCK MATCHING SCHEME FOR PRE-PROCESSING IN ENCODING AND TRANSCODING - Statistical content block matching for video pre-processing, for example in fast motion estimation, uses a second-order distortion criterion for processing steps such as identifying a best reference image portion for comparison with a current image portion. The second-order distortion criterion is a Lagrange-optimized combination of a mean squared error criterion with an entropy criterion. Then a fast motion estimation search advantageously includes performing a diamond search using the second-order distortion criterion to identify a candidate best reference image portion, and performing a nearest neighbor search starting using said second-order distortion criterion to identify the best reference image portion within a search range limited by an adaptive search range cap. A better motion vector can then be calculated.09-08-2011
20110216831APPARATUS AND METHOD FOR MOTION VECTOR FILTERING BASED ON LOCAL IMAGE SEGMENTATION AND LATTICE MAPS - A method and an apparatus for filtering motion vector fields provided by a motion estimator apparatus are disclosed. The method includes receiving an input image, determining a motion vector field associated with the input image, determining a local segmentation image, forming a lattice map to identify periodic structures, using the local segmentation image and the lattice map to obtain an image segment pixel count and an image/motion segment pixel count, and using the segment pixel count and the image/motion segment pixel count to provide a filtered motion vector field. Some embodiments further include a motion estimation apparatus including an image delay apparatus, a lattice detector to find lattice structures in the input and delayed images, a histogram generator and a histogram analyzer to provide a set of horizontal and vertical search masks, a motion vector estimator to provide a motion vector field, and a motion vector filter as provided herein.09-08-2011
20110002390METHODS AND SYSTEMS FOR MOTION VECTOR DERIVATION AT A VIDEO DECODER - Method and apparatus for deriving a motion vector at a video decoder. A block-based motion vector may be produced at the video decoder by utilizing motion estimation among available pixels relative to blocks in one or more reference frames. The available pixels could be, for example, spatially neighboring blocks in the sequential scan coding order of a current frame, blocks in a previously decoded frame, or blocks in a downsampled frame in a lower pyramid when layered coding has been used.01-06-2011
20100027663INTELLEGENT FRAME SKIPPING IN VIDEO CODING BASED ON SIMILARITY METRIC IN COMPRESSED DOMAIN - This disclosure provides intelligent frame skipping techniques that may be used by an encoding device or a decoding device to facilitate frame skipping in a manner that may help to minimize quality degradation due to the frame skipping. In particular, the described techniques may implement a similarity metric designed to identify good candidate frames for frame skipping. In this manner, noticeable reductions in the video quality caused by frame skipping, as perceived by a viewer of the video sequence, may be reduced relative to conventional frame skipping techniques. The described techniques advantageously operate in a compressed domain.02-04-2010
20110032991IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD - To provide a method of efficiently compressing information by performing improved removal of signal correlations according to statistical and local properties of a video signal in a 4:4:4 format which is to be encoded, an image encoding device for dividing each picture of a digital video signal into predetermined unit regions, and carrying out, for each of the predetermined unit regions, compression encoding using a motion compensation prediction includes: a prediction unit for searching for a motion vector based on virtual-pixel-accuracy specification information for specifying an upper limit of an accuracy of a pixel position indicated by the motion vector, and generating, based on the motion vector that is searched for, a motion-compensation predicted image; and an encoding unit for multiplexing the virtual-pixel-accuracy specification information with a bit stream, and multiplexing, based on a magnitude of the motion vector that is searched for and a magnitude of a motion vector used for prediction of the motion vector that is searched for, motion vector data to be encoded with the bit stream.02-10-2011
20120307908MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMS THEREOF - In a moving picture encoding apparatus, a primary candidate reference motion vector-setting unit sets N primary candidate reference motion vectors. A degree of reliability calculation unit calculates the reliability of each primary candidate reference motion vector, which represents effectiveness in predicting a motion vector of a block to be decoded, using coded or decoded image information. A reference motion vector determination unit selects M (M12-06-2012
20120147960Image Processing Apparatus and Method - The invention relates to an image processing apparatus and method capable of improving an encoding efficiency.06-14-2012
20120307907MOTION VECTOR REFINEMENT FOR MPEG-2 TO H.264 VIDEO TRANSCODING - A method for transcoding that includes (A) generating a decoded frame by decoding an MPEG-2 input video stream, the decoded frame including decoded macroblocks; (B) determining a search center for encoding a current macroblock corresponding to a pair of the decoded macroblocks on consecutive macroblock rows, when (i) the encoding uses a predictive field mode and (ii) a current field being encoded is a second field of a current frame that has a first field as a reference field, the search center is a temporally scaled version of a decoded motion vector from an upper or a lower macroblock in the pair; (C) generating a refined motion vector by searching in a temporal search direction about the search center; and (D) generating an H.264 output video stream by encoding the current macroblock based on the refined motion vector.12-06-2012
20120147959MOVING IMAGE DECODING APPARATUS, MOVING IMAGE CODING APPARATUS, MOVING IMAGE DECODING CIRCUIT, AND MOVING IMAGE DECODING METHOD - A moving image decoding apparatus which enables reduction in the memory bandwidth and the memory access latency for the motion compensation filter coefficients for use in inter-picture prediction involving motion compensation using variable coefficients includes: a decoding unit (06-14-2012
20120307906ADAPTIVE SECONDARY PREDICTION-BASED IMAGE ENCODING/DECODING METHOD, DEVICE AND RECORDING MEDIUM - The present disclosure provides a video encoding/decoding method including: selectively frequency transforming a first residual block generated by subtracting a predicted block from a current block, generating a first quantized block for the first residual block or the frequency transformed first residual block, generating a second quantized block, if the first quantized block is a quantized first residual block from quantizing the first residual block, through selectively performing a secondary prediction on the quantized first residual block by using a secondary predicted motion vector set, encoding information on whether the frequency transforming is performed and selectively encoding information on the secondary prediction, encoding the first quantized block or the second quantized block into a bitstream, and decoding the same.12-06-2012
20120307905METHOD AND APPARATUS FOR ENCODING/DECODING A MOTION VECTOR BY SELECTING A SET OF PREDICTED CANDIDATE MOTION VECTORS, AND METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING USING THE SAME - A method of encoding a motion vector includes: selecting one of a plurality of predicted candidate motion vector sets by using motion information of neighboring blocks of a current block; selecting one of predicted candidate motion vectors within a selected predicted candidate motion vector set, as a predicted motion vector; encoding a differential motion vector representing a difference between a current motion vector or motion vector of the current block and a selected predicted motion vector; and encoding a predicted motion vector index indicating the selected predicted motion vector. As a motion vector is encoded after selecting an efficient predicted candidate motion vector set, the size of a differential vector to be encoded can be reduced without necessarily encoding additional information to indicate which set of predicted candidate motion vectors has been selected, resulting in improved compression efficiency of motion vectors and in turn the improved video compression efficiency.12-06-2012
20120307904PARTIAL FRAME UTILIZATION IN VIDEO CODECS - Embodiments of the present invention provide techniques for efficiently coding/decoding video data during circumstances where a decoder only requires or utilizes a portion of coded frames. A coder may exchange signaling with a decoder to identify unused areas of frames and prediction modes for the unused areas. An input frame may be parsed into a used area and an unused area based on the exchanged signaling. If motion vectors of the input frame are not limited to the used areas of the reference frames, the unused area of the input frame may be coded using low complexity. If the motion vectors of the input frame are limited to the used areas of the reference frames, the pixel blocks in the unused area of the input frame may not be coded, or the unused area of the input frame may be filled with gray, white, or black pixel blocks.12-06-2012
20120307903MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding apparatus includes: a motion vector predictor candidate calculation unit which calculates motion vector predictor candidates and the number of motion vector predictor candidates; an inter prediction control unit which selects an optimum motion vector predictor candidate; and a variable length coding unit which sets the motion vector predictor candidate list size to the number of motion vector predictor candidates, and assigns a bit string according to the motion vector predictor candidate list size to a motion vector predictor index used for coding a motion vector, thereby performing variable length coding.12-06-2012
20120307902IMAGE CODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING METHOD, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes: determining a maximum number of merging candidates; deriving first merging candidates based on blocks spatially or temporally neighboring a current block; determining whether or not a total number of the first merging candidates is smaller than the maximum number; deriving, by making a combination out of the derived first merging candidates, a second merging candidate for bi-directional prediction when it is determined that the total number of the first merging candidates is smaller than the maximum number; selecting a merging candidate to be used for the coding of the current block from the first merging candidates and the second merging candidate; and coding, using the determined maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.12-06-2012
20120307901HYBRID MOTION IMAGE COMPRESSION - A system and method for processing images of a scene captured by an imaging platform include a correction processor configured to determine a plurality of coefficients associated with transformations that substantially correct expected inter-frame changes in the images caused by relative motion between the scene and the imaging platform; a transformation processor configured to transform the captured images using the plurality of coefficients and transformations so as to substantially correct said expected inter-frame changes; and a module configured to store the plurality of coefficients in image metadata associated with the images.12-06-2012
20080310509Sub-pixel Interpolation and its Application in Motion Compensated Encoding of a Video Signal - Reducing computational complexity when generating sub-pixel values for sub-pixel motion estimation from integer pixels. In an embodiment, half pixels in vertical and horizontal directions are computed by a applying a filter of first complexity on integer pixels, and a half pixel in diagonal direction is computed using a filter of lower complexity as compared to the filter of first complexity. Quarter (and other lower resolution pixels) pixels may also be generated using the half pixel in the diagonal direction. Thus, overall computational complexity is reduced in generating sub-pixels for sub-pixel motion estimation.12-18-2008
20100329342VIDEO CODING BASED ON FIRST ORDER PREDICTION AND PRE-DEFINED SECOND ORDER PREDICTION MODE - This disclosure describes video encoding and decoding techniques in which a first order prediction process and a second order prediction process are used in combination to generate predictive video blocks for video coding. First order prediction may be similar to conventional motion estimation and motion compensation that generates residual video blocks. The second order prediction may involve a process similar to conventional intra-prediction, but is performed on the residual video blocks. The techniques of this disclosure may pre-define the second order prediction to a specific mode, such as a mode similar to the intra-DC mode used in intra coding. In addition, the techniques of this disclosure may combine aspects of the first order and second order prediction into a single process so that the effects of second order prediction on the residuals are taken into account during the first order prediction process, which may improve compression.12-30-2010
20110116549METHODS AND SYSTEMS FOR REDUCING BLOCKING ARTIFACTS WITH REDUCED COMPLEXITY FOR SPATIALLY-SCALABLE VIDEO CODING - A method for characterizing of a block boundary between neighboring blocks when at least one of said neighboring blocks is encoded using inter-layer texture prediction (I_BL) including characterizing the block boundary with a first boundary strength indicator when a luma sample from one of the neighboring blocks is encoded using an intra-prediction mode other than the I_BL characterizing the block boundary with a second boundary strength indicator when no luma sample from the neighboring blocks has intra-prediction mode encoding other than the I_BL, and any of the neighboring blocks and blocks from which the neighboring blocks are predicted have non-zero transform coefficients or characterizing the block boundary with a third boundary strength indicator when no luma sample from the neighboring blocks is encoded using an intra-prediction mode other than the I_BL and all of the neighboring blocks and blocks from which the neighboring blocks are predicted have no transform coefficients.05-19-2011
20110116548IMAGE DECODING APPARATUS, INTEGRATED CIRCUIT, IMAGE DECODING METHOD, AND IMAGE DECODING SYSTEM - The transfer unit (05-19-2011
20090168881CONFIGURABLE MOTION ESTIMATION - In some embodiments, a motion estimation method and engine are provided.07-02-2009
20120039393Video decoding apparatus and method - A video decoding apparatus for decoding an encoded video bitstream having frames of video data encoded in rows of macroblocks. The video decoding apparatus comprises a parsing unit configured to receive the encoded video bitstream and to interpret the encoded video bitstream to generate items of macroblock information to be used for reconstructing the video frames of video data. The parsing unit is configured to store the items of macroblock information in a memory in bitstream order. The video decoding apparatus further comprises a line control unit configured to generate line control information associated with each row of macroblocks, the line control information comprising a sequence of pointers to the items of macroblock information stored in the memory, such that sequentially reading the sequence of pointers accesses the items of macroblock information in raster scan order. The line control information is stored in said memory in association with said items of macroblock information. A reconstruction pipeline is configured to reconstruct the frames of video data with reference to the line control information.02-16-2012
20110305280COMPRESSED DYNAMIC IMAGE ENCODING DEVICE, COMPRESSED DYNAMIC IMAGE DECODING DEVICE, COMPRESSED DYNAMIC IMAGE ENCODING METHOD AND COMPRESSED DYNAMIC IMAGE DECODING METHOD - A compressed dynamic image encoding device is provided, in which a motion vector is generated by searching a reference image read from a frame memory for an image area most similar to an image area of a video input signal; a motion-compensated reference image is generated from the motion vector and the reference image read from the frame memory; a prediction residual is generated, by subtracting the motion-compensated reference image from the video input signal; the reference image to be stored in the frame memory is generated, by adding the motion-compensated reference image and the result of processing of orthogonal transform, quantization, inverse quantization, and inverse orthogonal transform performed to the prediction residual; and an encoded video output signal is generated by the processing of orthogonal transform, quantization, and variable-length encoding performed to the prediction residual. The reference image comprises on-screen reference images A, B, and C, located inside a video display screen, and an off-screen reference image D located outside the video display screen, and the off-screen reference image D is generated based on the positional relationship of plural similar reference images A and B of the on-screen reference images A, B, and C.12-15-2011
20110142130PICTURE DECODER - A picture decoder having a stream buffer, an H.264/AVC decoder, and a processor is provided. The stream buffer stores stream data. The H.264/AVC decoder decodes the stream data and performs an operation on a slice layer specified in the H.264/AVC standard to reorder reference pictures recorded in a reference picture list according to the stream data and generate a plurality of decoded pictures. The processor executes a program to perform an operation on a sequence layer specified in the H.264/AVC standard and mark the decoded pictures.06-16-2011
20110142129MPEG VIDEO RESOLUTION REDUCTION SYSTEM - An MPEG video resolution reduction system includes an MPEG decoder, a down-sampler, and a partial MPEG re-encoder. The MPEG decoder decodes an input resolution MPEG stream to an input resolution baseband, and determines coding information from decoding the input resolution MPEG stream. The down-sampler down-samples the input resolution baseband to a reduced resolution baseband. The partial MPEG re-encoder uses the coding information to encode the reduced resolution baseband to a reduced resolution MPEG stream.06-16-2011
20100054336FRAME INTERPOLATION DEVICE AND FRAME INTERPOLATION METHOD - A frame interpolation device includes: a unit dividing two temporally different reference frames of moving image signal into block units; a unit detecting motion vectors in block units in accordance with correlation between blocks of the reference frames; a unit obtaining at least first and second motion vectors from the statistical amount of the motion vectors; a unit estimating the first or second motion vector for each block in accordance with the obtained first and second motion vectors; a unit translating the first and second motion vectors through a generated pixel in an interpolated frame between the reference frames, setting local areas at four points of the start and end points of the first and second motion vectors as search areas, and identifying the first or second motion vector from the search areas; and a unit performing motion compensation on the pixel by using the first or second motion vector.03-04-2010
20100290530MOTION VECTOR PROCESSING - This disclosure describes techniques for processing motion vectors such that the resulting motion vectors better correlate with the true motion of a video frame. In one example, the techniques may include comparing a block motion vector corresponding to a video block to a sub-block motion vector corresponding to a sub-block contained within the video block. The techniques may further include selecting one of the block motion vector and the sub-block motion vector as a spatially-estimated motion vector for the sub-block based on the comparison. Motion vectors that better correlate with true motion may be useful in applications such as motion compensated frame interpolation (MCI), moving object tracking, error concealment, or other video post-processing that requires the true motion information.11-18-2010
20120207217VIDEO CODING BASED ON GLOBAL MOVEMENT COMPENSATION - A method for video coding of at least one digital picture sequence is disclosed. The pictures of said sequence can be intermediary pictures or key pictures used as references for the coding by motion compensation of intermediary pictures. The intermediary pictures are coded per area based on a global motion compensation GMC in the forward and backward direction from key pictures, the areas of the intermediary picture being constituted either by merging of global motion compensated key picture areas, or by conventional coding, the choice between merging and conventional coding being made according to the result of a measurement of coherency between the signals of global motion compensated key picture areas. A video coding device and a video decoding device are also disclosed.08-16-2012
20100166072Motion Estimation Techniques - Techniques for motion estimation are disclosed. For example, embodiments may determine error metric lower bound values for a block in a current image, where each of the error metric lower bound values corresponds to a search position in a reference image. Based on a separation threshold, a plurality of candidate positions may be identified from the search positions. A matching position is then identified from the candidate positions. Based on the matching position, a motion vector is determined.07-01-2010
20100027666MOTION VECTOR DETECTING APPARATUS, MOTION VECTOR DETECTING METHOD, AND PROGRAM - A motion vector detecting apparatus includes an evaluation value information forming unit to form evaluation value information of motion vectors evaluating a possibility that a reference pixel is a candidate motion of a target pixel on the basis of pixel value correlation information between the target pixel in one of frames on a time axis in moving image data and the reference pixel in a search area in another of the frames, perform counting on at least one of the target pixel and reference pixel when a strong correlation is determined on the basis of the pixel value correlation information, and determine an evaluation value to be added to the evaluation value information on the basis of a count value obtained through the counting; a motion vector extracting unit to extract candidate motion vectors; and a motion vector determining unit to determine a motion vector among the candidate motion vectors.02-04-2010
20090262835SKIP MACROBLOCK CODING - Various techniques and tools for encoding and decoding (e.g., in a video encoder/decoder) binary information (e.g., skipped macroblock information) are described. In some embodiments, the binary information is arranged in a bit plane, and the bit plane is coded at the picture/frame layer. The encoder and decoder process the binary information and, in some embodiments, switch coding modes. For example, the encoder and decoder use normal, row-skip, column-skip, or differential modes, or other and/or additional modes. In some embodiments, the encoder and decoder define a skipped macroblock as a predicted macroblock whose motion is equal to its causally predicted motion and which has zero residual error. In some embodiments, the encoder and decoder use a raw coding mode to allow for low-latency applications.10-22-2009
20130010871Method, System and Computer Program Product for Selecting a Motion Vector in Scalable Video Coding - From among blocks within a region of a first image, a search is performed for a highest scoring match to a block of a second image. Searching for the highest scoring match includes penalizing scores of blocks outside a portion of the region versus scores of blocks within the portion of the region. A motion vector is coded between the block of the second image and the highest scoring match.01-10-2013
20130010872METHOD OF AND APPARATUS FOR VIDEO ENCODING AND DECODING BASED ON MOTION ESTIMATION - Provided is a method of and apparatus for video encoding and decoding based on motion estimation. The method includes generating a motion vector by searching a reference picture using pixels of a current block, generating a prediction motion vector that is a prediction value of the motion vector by searching the reference picture using previously encoded pixels located adjacent to the current block, and encoding the current block based on the motion vector and the prediction motion vector. By accurately predicting the motion vector of the current block, the number of bits required for encoding the motion vector can be reduced, thereby improving the compression rate of video data.01-10-2013
20130010873SYSTEM AND METHOD OF ADAPTIVE VERTICAL SEARCH RANGE TRACKING FOR MOTION ESTIMATION IN DIGITAL VIDEO - A system and method which determines an adaptive vertical search range used to provide motion estimation in digital video content are disclosed. In some embodiments, a fixed-size vertical search range for the motion estimation is defined and utilized. A reference frame and target frame are stored in memory, and a block in the reference frame is selected for consideration. An offset value is determined which is indicative of a directional shift of the fixed-size vertical search range and the vertical search range is shifted based on the offset value. A motion vector is then estimated using the shifted vertical search range.01-10-2013
20100008425IMAGE QUALITY EVALUATING METHOD, IMAGE QUALITY EVALUATING APPARATUS AND IMAGE QUALITY EVALUATING PROGRAM - To estimate an image quality deterioration level at a high accuracy. An image quality deterioration level is estimated by judging whether image quality deterioration is suppressed or not by error concealment processing when decoding is not correctly performed, based on information obtained in decoding processing. When it is judged that error concealment is effectively operated, it is estimated that deterioration of an image quality even in an image region not correctly decoded is small. When it is estimated that error concealment is not effectively operated, it is estimated that image deterioration is heavy.01-14-2010
20120147965VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.06-14-2012
20120099654VIDEO DECODING METHOD - Video decoding device is disclosed. The video decoding device comprises a demultiplexer, a first decoder and a controller. The demultiplexer receives a Transport Stream to recover video Packetized Elementary Stream (PES) to determine a presentation time stamp (PTS) and a decoding time stamp (DTS) in a PES header of the PES. The first decoder retrieves a video frame from the video PES to determine temporal reference of the video frame. The controller receives the PTS, the DTS, and the temporal reference to determine whether there is a missing video frame.04-26-2012
20120099653METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING - A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.04-26-2012
20120099651METHOD TO IMPROVE DETECTION OF MOTION WITH PHASE CORRELATION - Phase correlation is an established method for computing motion which relies on the ability to find peaks in a computed phase correlation surface. Two methods to improve the ability to detect peaks in the phase correlation surface are described herein. The first method applies a theoretically-derived and spatially-varying gain to the phase correlation surface. The gain compensates for peaks whose amplitudes have been decreased due to windowing effects; such effects are unavoidable in phase correlation. The second method uses concepts from matched filters to improve detection of peaks whose amplitudes are diminished due to a spreading of the peak energy into surrounding positions in the phase correlation surface. Peak detection filters allow such low-amplitude peaks to be properly detected. It is possible to use only the first method, or only the second method or both methods combined.04-26-2012
20120063516Motion Estimation in Enhancement Layers in Video Encoding - A method for encoding a video sequence in a scalable video encoder is provided that includes selecting a first search window configuration for coding a current picture of the video sequence in an enhancement layer encoder of the scalable video encoder based on motion vectors generated by a reference layer encoder when encoding the current picture, and coding the current picture in the enhancement layer encoder using the first search window configuration.03-15-2012
20120063517METHOD AND APPARATUS FOR HIERARCHICAL PICTURE ENCODING AND DECODING - A residual picture is decoded first by demultiplexing an input enhancement layer bitstream into one or more bitstreams corresponding to an order of quality layers. Next, a residual picture is restored by independently decoding the bitstream for each quality layer. The restored residual picture is stored in a frame buffer. A finally restored residual picture is output by adding, to the restored residual picture, a picture that has undergone motion compensation in a reference frame within a same enhancement layer.03-15-2012
20080267293Video Encoder Software Architecture for VLIW Cores - This invention is a method of video encoding. The number N macroblocks stored in a temporary buffer depends upon an estimated number of motion vectors. N macroblocks of current and prior frame data is transferred to the temporary buffer. The invention determines for each macroblock whether to be inter frame predicted or intra frame predicted. The inter and intra macroblocks are separately encoded based upon this determination and stored in an output buffer. Output macroblocks are output from the output buffer in raster scan order. This technique permits the process to loop over differing number of macroblocks in differing parts of the encoding process. Entropy encoding complexity from separating inter and intra macroblock encoding is avoided by separating a symbol generation phase from an encoding phase.10-30-2008
20110064138DEVICE AND METHOD FOR PERFORMING HALF PIXEL ACCURACY FAST SEARCH IN VIDEO CODING - Methods, devices, and systems for performing half-pixel accuracy fast search in video coding are disclosed. In one embodiment, a method for obtaining a motion vector between a first macroblock contained in a first frame and a second macroblock contained in a second frame of video image data comprises determining an integer pixel location having a lowest mean of absolute difference (“MAD”) value in the second frame relative to the first frame; identifying a first conjugate sub-pixel value in a first direction relative to the integer pixel location having a lowest first direction MAD value; identifying a second conjugate sub-pixel value in a second direction relative to the integer pixel location having a lowest second direction MAD value; and determining a motion vector representing the distance between the first macroblock and the second macroblock using the integer pixel location and a sub-integer pixel location, wherein the sub-pixel location is obtained from the first conjugate sub-pixel value and the second conjugate sub-pixel value having the lowest MAD value.03-17-2011
20120155545VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.06-21-2012
20090238278VIDEO COMPRESSION USING SEARCH TECHNIQUES OF LONG-TERM REFERENCE MEMORY - Particular embodiments generally relate to video compression. In one embodiment, a store of reference frames is provided in memory. The reference frames may be classified based on a plurality of classifiers. The classifiers may correspond to features that are found in the reference frame. A frame to encode is then received. The frame is analyzed to determine features found in the frame. As macroblocks in the frame are encoded, a macroblock is analyzed to determine which feature may be included in the macroblock. The feature is used to determine a classifier, which is used to determine a subset of the reference frames. The subset is then searched to determine a reference frame for the macroblock.09-24-2009
20110158322SERVER APPARATUS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD, AND pROGRAM - Disclosed is a server apparatus receives a stream or a packet, which includes a moving image or a still image, from a first terminal, performs conversion that enhances resolution and image quality of the received moving image signal or still image signal, and transmits said converted signal to a terminal other than said first terminal.06-30-2011
20110158320METHODS AND APPARATUS FOR PREDICTION REFINEMENT USING IMPLICIT MOTION PREDICTIONS - Methods and apparatus are provided for prediction refinement using implicit motion prediction. An apparatus includes an encoder for encoding an image block using explicit motion prediction to generate a coarse prediction for the image block and using implicit motion prediction to refine the coarse prediction.06-30-2011
20110158319ENCODING SYSTEM USING MOTION ESTIMATION AND ENCODING METHOD USING MOTION ESTIMATION - Provided are an encoding system using motion estimation and an encoding method using motion estimation for achieving high-speed motion estimation according to a multi-processing unit. The encoding system using motion estimation, comprises a multi-processing unit calculating motion estimation on many macroblocks of an input image, a motion estimator estimating motion vectors of the macroblocks of the input image using the motion estimation on the plurality of macroblocks, previously calculated by the multi-processing unit, and an encoder encoding the image based on the motion vectors of the macroblocks, estimated by the motion estimator. According to the present invention, motion estimation to be used for motion estimation can be calculated in advance according to the multi-processing unit capable of processing high-speed parallel processing to reduce an image encoding time and improve an encoding speed.06-30-2011
20110158321PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS AND THE METHODS - A weighting factor mode determination unit determines whether to code an interlaced picture in a field mode or a frame mode, based on a value of a flag “AFF” indicating whether or not to switch between the field mode and the frame mode on a block-by-block basis and notifies switches and a multiplexing unit of the determined mode. The switches select either the field mode or the frame mode according to the notified mode. A field weighting factor coding unit or a frame weighting factor coding unit performs respectively the coding of respective weighting factors when the respective modes are selected.06-30-2011
20110090967IMAGE-ENCODING METHOD AND A DEVICE THEREFOR, AND IMAGE-DECODING METHOD AND A DEVICE THEREFOR - An image encoding method is provided, in which image data divided into basic blocks is classified in units of groups and subgroups, wherein each group comprises at least one basic block and each subgroup comprises at least one basic block and is included in each group; an encoding mode for a predetermined group is determined in order to encode the predetermined group, wherein the encoding mode represents a mode for encoding data included in the predetermined group in units of one data processing unit selected from a group, a subgroup, and a basic block; and the data of the predetermined group is encoded according to the determined encoding mode. Detailed operations in the image encoding method are performed in consideration of the encoding mode of the group.04-21-2011
20110090966VIDEO PREDICTIVE CODING DEVICE AND VIDEO PREDICTIVE DECODING DEVICE - According to one embodiment, a video coding device includes: a bi-directional predictor that generates a predicted image of an image to be coded by using a reference image, which includes a decoded image of a bi-directionally predictive coded image, and motion vector information; and a coder that codes a prediction error between the image to be coded and the predicted image. The bi-directional predictor generates the predicted image while switching a plurality of arithmetic methods that use different rounding methods.04-21-2011
20110090965Generation of Synchronized Bidirectional Frames and Uses Thereof - A digital video processing method implementable on an apparatus, comprising performing on a reconstructed digital video frame, by a processor, a transform 04-21-2011
20110090964METHODS AND APPARATUS FOR ADAPTIVELY CHOOSING A SEARCH RANGE FOR MOTION ESTIMATION - Systems, methods, and computer program products that can be used to determine a search range (SR) when performing motion estimation at, for example, a video encoder or decoder. Determining a motion vector for a current block during motion estimation may involve searching within a search window that may reside in a reference frame, or in a previously decoded block that spatially or temporally neighbors the current block. Such a search seeks a motion vector that minimizes a metric, such as a sum of absolute differences between corresponding blocks of reference frames. A motion vector that minimizes such a metric may be a good candidate for use in motion estimation. The search may become more efficient if a search range is determined such that the extent of the search is bounded. A search range may be determined at the block level or at the picture level.04-21-2011
20110090963METHOD AND APPARATUS FOR ZOOM MOTION ESTIMATION - In accordance with an example embodiment of the present invention, the present invention provides method and apparatus for motion compensated prediction. Apart from translational motion, zoom motion is taken into account by sampling an interpolated frame with one or more selected sampling rates to generate one or more zoom reference frames; matching a frame with the zoom reference frames; and determining one or more motion data.04-21-2011
20110317766APPARATUS AND METHOD OF DEPTH CODING USING PREDICTION MODE - A depth image coding method may calculate a depth offset of a depth image, may generate a prediction mode based on the depth offset, may minimize a prediction error of the depth image having a low correlation between adjacent points of view and a low temporal correlation and may enhance a compression rate. The depth offset may be calculated based on a representative value of adjacent pixels included in a template as opposed to using a depth representative value of pixels in a block and header information may not be needed to encode an offset and the offset may be generated by a depth image decoding apparatus. When a plurality of objects is included in a block, a depth offset is calculated for each of the plurality of objects and a motion vector is calculated for each of the plurality of objects and the depth image may be accurately predicted.12-29-2011
20110317765Encoding apparatus, electronic device, imaging apparatus, and imaging system - Disclosed herein is an encoding apparatus including: an encoding execution block configured to encode moving image data in accordance with setting; and a setting block configured to make setting for the encoding execution block to execute the encoding. If an image of the moving image data is darker than usual, the setting block makes the setting so as to decrease a code amount of the darker image of the moving image data, and the encoding execution block encodes the darker image of the moving image data in accordance with the setting for decreasing the code amount of the darker image.12-29-2011
20120044998TECHNIQUE FOR ESTIMATING MOTION AND OCCLUSION - A method and apparatus for estimating motion and occlusion is disclosed. In one aspect, a method of estimating motion and occlusion between three or more frames in a video stream includes identifying a plurality of motion vector candidates for each of a forward direction and a backward direction, generating a plurality of candidate pairs, determining an energy for at least some of the plurality of candidate pairs using a processor by jointly evaluating the forward motion vector and the backward motion vector of at least some of the plurality of candidate pairs based on interframe difference, spatial motion correlation, temporal motion correlation, and spatial occlusion correlation, and estimating motion and occlusion between the three or more frames by selecting a candidate vector from the plurality of candidate vectors based on the determined energies.02-23-2012
20120044997SYSTEM AND METHOD FOR BOUNDARY MOTION VECTOR CORRECTION IN MOTION COMPENSATED FRAME RATE - A method of processing video data includes: receiving a first video frame with first blocks of pixels associated with a known motion vector and a second video frame with second blocks of pixels, the second blocks corresponding to the first blocks, and uncovered blocks adjacent to the first frame boundary not corresponding to the first blocks in the first video frame; determining a first block for each line segment in the second video frame corresponding to a block in the first video frame, wherein the first block has the known motion vector from the first video frame; and assigning a motion vector for at least one of the line segments in the second video frame to the uncovered blocks in the line segment of the second video frame between first block and the first frame boundary.02-23-2012
20120044996IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device an method whereby processing efficiency can be improved.02-23-2012
20080232474BLOCK MATCHING ALGORITHM OPERATOR AND ENCODER USING THE SAME - Provided are a block matching algorithm (BMA) operator and an encoder, in which Sum of Absolute Differences (SAD) data is obtained by performing a BMA operation in a parallel manner, encoding in real time is performed using a search range of ±32 or more, and moving image data is compressed at a high rate by using such a wide search range.09-25-2008
20120002728SYSTEM AND METHOD FOR TRANSCODING BETWEEN SCALABLE AND NON-SCALABLE VIDEO CODECS - Systems and methods are provided for performing transcoding in video communication system that use scalable video coding. The systems and methods can be used to transcode or convert input signals having certain characteristics into desired output signals having different characteristics requirements. The systems and methods are based on compressed domain processing, partial decoding-reencoding, or full decoding-reencoding with side information, depending on the specific characteristics of the input and desired output signals.01-05-2012
20100067581SYSTEM AND METHOD FOR SCALABLE VIDEO CODING USING TELESCOPIC MODE FLAGS - Systems and methods for scalable video coding using special inter-layer prediction modes (called telescopic modes) are provided. These modes facilitate accelerated operation of encoders with improved coding efficiency.03-18-2010
20120207218MOTION DETECTION DEVICE AND METHOD, VIDEO SIGNAL PROCESSING DEVICE AND METHOD AND VIDEO DISPLAY DEVICE - In a motion detection device that detects motion from two frames of a video signal, a pattern matching detector determines pattern similarity between pixel blocks centered on a pixel of interest in the two frames to detect pattern motion. An edge detector detects edge presence and direction in a vicinity of the pixel of interest. A frame difference detector generates a smoothed frame difference signal for the pixel of interest. The smoothing is carried out within appropriate extents selected according to the detected pattern motion and edge direction. A motion information corrector generates motion information for the pixel of interest from the frame difference signal. Appropriate selection of the smoothing extent reduces motion detection mistakes. The motion information is useful in motion adaptive video signal processing.08-16-2012
20100284467IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE CODING METHOD, AND IMAGE DECODING METHOD - An input image signal is divided into MC block units and, when coding processing is performed in these divided units, a motion compensation section generates a motion-compensated prediction image by detecting movement amounts in predetermined MC block units, a smoothing filter section performs, with respect to the prediction image, smoothing of pixels located at the boundaries of adjoining MC blocks on the basis of predetermined evaluation criteria, and a prediction residual signal, which is obtained from the difference between the prediction image obtained by the smoothing, and the input image signal, is encoded.11-11-2010
20120008691METHOD AND APPARATUS FOR REGION-BASED WEIGHTED PREDICTION WITH IMPROVED GLOBAL BRIGHTNESS DETECTION - A method and apparatus for determining a region-based weighted prediction with improved global brightness detection. The method includes applying a global brightness change detection methods by computing the weighted prediction parameters, determining if the brightness change is different amount of change for the different regions, if the change is not different, calculate motion estimation and setting Refidx to 1 and setting Refidx is set to 0 when there is change, determining the best motion vector, motion vector cost and the best reference input, and determining a region-based weighted prediction with improved global brightness detection based on the motion vector data.01-12-2012
20120008686MOTION COMPENSATION USING VECTOR QUANTIZED INTERPOLATION FILTERS - The present disclosure describes use of dynamically assignable interpolation filters as part of motion compensated prediction. An encoder and a decoder each may store common codebooks that define a variety of interpolation filters that may be applied to predicted video data. During runtime coding, an encoder calculates characteristics of an ideal interpolation filter to be applied to a reference block that would minimize prediction error when the reference block would be used to predict an input block of video data. Once the characteristics of the ideal filter are identified, the encoder may search its local codebook to find a filter that best matches the idea filter. The encoder may filter the reference block by the best matching filter stored in the codebook as it codes the input block. The encoder also may transmit an identifier of the best matching filter to a decoder, which will use the interpolation filter on predicted block as it decodes coded data for the block.01-12-2012
20120008692IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - The image processing device generating an interpolated picture between two temporally former and latter original pictures included in an inputted moving picture to convert a frame rate of the moving picture includes: a motion vector detection unit configured to detect a motion vector quantity between the original pictures for each of blocks obtained by dividing the original picture; a compensation strength determination unit configured to determine, for each predetermined region composed of the blocks a motion compensation strength indicating a degree of matching between the original picture and the interpolated picture based on the detected motion vector quantities; and an interpolated picture generation unit configured to generate, for each predetermined region, the interpolated picture in accordance with the determined motion compensation strength.01-12-2012
20120008690METHODS AND APPARATUSES FOR ENCODING AND DECODING MOTION VECTOR - Encoding and decoding a motion vector using a motion vector of a current block of a current picture, which indicates a region corresponding to the current block in a first reference picture and one of generating a motion vector predictor from a motion vector of the adjacent block having a motion vector referring to the first reference picture among adjacent blocks encoded before the current block and a motion vector of an adjacent block referring to a second reference picture other than the first reference picture.01-12-2012
20120008689FRAME INTERPOLATION DEVICE AND METHOD - To interpolate a frame between two frames of a video signal, sets of reference images are generated, each set having a different resolution level. Motion between the two frames is estimated at each resolution level by using these sets of reference images. For each pixel processed at each resolution level, multiple motion vector candidates are obtained. Information indicating the multiple motion vector candidates is used to select motion search ranges at the next higher resolution level. To determine the motion search range for a pixel, selected motion vector candidates pertaining both to the pixel itself and to its neighboring pixels are used. An interpolated frame of high image quality is thereby obtainable without increased computation and with reduced risk of major image defects due to erroneous motion estimation.01-12-2012
20120008688Method and Apparatus of Temporal Motion Vector Prediction - An apparatus and method for motion vector prediction for a current block in a picture are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector. In conventional temporal MVP, the predictor is often based on a single candidate such as the co-located motion vector in the previous frame/picture. If the co-located motion vector in the previous frame/picture does not exist, the predictor for the current block is not available. A technique for improved MVP is disclosed where the MVP utilized multiple candidates based on co-located motion vectors from future and/or past reference pictures. The candidates are arranged according to priority order to provide better availability of MVP and also to provide more accurate prediction. Furthermore, the MVP technique disclosed can be operated in a closed-loop fashion so that no additional side information or minimum additional side information is required.01-12-2012
20120008687VIDEO CODING USING VECTOR QUANTIZED DEBLOCKING FILTERS - The present disclosure is directed to use of dynamically assignable deblocking filters as part of video coding/decoding operations. An encoder and a decoder each may store common codebooks that define a variety of deblocking filters that may be applied to recovered video data. During run time coding, an encoder calculates characteristics of an ideal deblocking filter to be applied to a mcblock being coded, one that would minimize coding errors when the mcblock would be recovered at decode. Once the characteristics of the ideal filter are identified, the encoder may search its local codebook to find stored parameter data that best matches parameters of the ideal filter. The encoder may code the reference block and transmit both the coded block and an identifier of the best matching filter to the decoder. The decoder may apply the deblocking filter to mcblock data when the coded block is decoded. If the deblocking filter is part of a prediction loop, the encoder also may apply the deblocking filter to coded mcblock data of reference frames prior to storing the decoded reference frame data in a reference picture cache.01-12-2012
20100172416FILTERING STRENGTH DETERMINATION METHOD, MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - A moving picture coding apparatus including an inter-pixel filter having the filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries. The filters include a filter A07-08-2010
20120014454Method and Apparatus for Parallel Context Processing - A method and apparatus for parallel context processing for example for high coding efficient entropy coding in HEVC. The method comprising retrieving syntax element relating to a block of an image, grouping at least two bins belonging to similar context based on the syntax element, and coding the grouped bins in parallel.01-19-2012
20120014453IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing method according to the present invention comprises the step of; inputting a plurality of images; reducing a first image of the plurality of images to a reduced image in a predetermined ratio; specifying a feature point included in the reduced image, on the basis of image data of the reduced image; designating a feature point in the first image so that the feature point corresponds to the feature point in the reduced image; calculating a corresponding point which is similar to the feature point in the first image, from a second image of the plurality of images by using a filter, the filter being corresponding to the predetermined ratio at time of reducing the first image; and determining a motion vector between the first image and the second image on the basis of the feature point and the calculated corresponding point.01-19-2012
20120014452MULTI-PARAMETER MOTION FOR EFFICIENT PREDICTION IN VIDEO COMPRESSION - Motion Compensated Prediction (MCP) has been a key factor in most advanced video compression schemes. For further reduction in the residual signal energy in B-frames, bidirectional prediction where two motion-compensated signals are superimposed has also been utilized in most prior video coding standards such as MPEG-2 or MPEG-4/AVC. Syntax changes and appropriate motion vector prediction that allows efficient use of multi-parameter MCP is described. The prediction signal is constructed by linearly combining the motion-compensated signals from each parameter (or motion vector).01-19-2012
20120014449METHOD AND APPARATUS FOR MULTI-VIEW VIDEO ENCODING USING CHROMINANCE COMPENSATION AND METHOD AND APPARATUS FOR MULTI-VIEW VIDEO DECODING USING CHROMINANCE COMPENSATION - Methods and apparatuses for efficiently coding and decoding multi-view video are provided. A method of decoding multi-view video includes: interpreting a first picture type indicating whether a current picture of the multi-view video is a reference video type for inter prediction; interpreting a block type indicating a method of determining a motion vector of a current block of the current picture; interpreting a chrominance compensation value of the current block based on at least one of the interpreted first picture type and the interpreted block type; and performing chrominance compensation on the current block by using the interpreted chrominance compensation value.01-19-2012
20120057635Technique for Bringing Encoded Data Items Into Conformity with a Scalable Coding Protocol - A technique for making media content in the form of encoded data items decodable by a decoder operating in accordance with a scalable coding protocol that defines two or more media layers is provided. A method implementation of this technique comprises the steps of generating one or more dummy data items that define a first media layer of the scalable coding protocol, and marking the encoded data items as belonging, to a second media layer of the scalable coding protocol.03-08-2012
20120057632IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device and method which enable increase in compressed information to be suppressed, and also enable prediction precision to be improved.03-08-2012
20120057631Method and device for motion estimation of video data coded according to a scalable coding structure - A technique for searching a reference picture including a plurality of reference blocks for a block that best matches a current block in a current picture. A subset of current blocks is designated in a current picture. A first search operation is applied to the subset of current blocks and a second search operation is applied to current blocks outside of the subset. A search area within a corresponding reference picture is of a variable size in the first operation, whereas the second operation is a basic four-step motion search.03-08-2012
20120014451Image Encoding Methods, Image Decoding Methods, Image Encoding Apparatuses, and Image Decoding Apparatuses - In an embodiment, an image encoding method is provided. The image encoding method may include a first partial encoding step, wherein first partially encoded image data is generated based on first input data after the first input data is available; a second partial encoding step, wherein second partially encoded image data is generated based on second input data after the second input data is available, before the first input data is available; and an encoded image data generating step, wherein encoded image data is generated based on the first partially encoded image data and the second partially encoded image data.01-19-2012
20100142622VIDEO CODING METHOD AND DEVICE - The video coding method comprises: 06-10-2010
20120250770 MOVING PICTURE CODING METHOD AND A MOVING PICTURE DECODING METHOD - A moving picture coding apparatus includes a motion estimation unit (10-04-2012
20120250771IMAGE PROCESSING APPARATUS AND METHOD AS WELL AS PROGRAM - An image processing apparatus and method that can be applied to an image encoding apparatus that carries out encoding in accordance with, for example, a H.264/AVC method. A high-symmetry interpolation filter of variable filter coefficients has a number of pixels, to which symmetry determined in advance is applied, greater than that of a low-symmetry interpolation filter. The high-symmetry interpolation filter carries out a filter process for a reference image from a frame memory using filter coefficients calculated by a high-symmetry filter coefficient calculation portion and outputs the reference image after the variable filter process to a selector. The selector selects, when a slice of a processing object is a B slice, the reference image after the variable filter from the high-symmetry interpolation filter and outputs the selected image to a motion prediction second and a motion compensation portion under control of a control part.10-04-2012
20120250768VIDEO DECODING SWITCHABLE BETWEEN TWO MODES - Video decoder apparatus and method, for decoding a motion-compensated transform-coded video stream. The apparatus has: a first mode in which it is operable to decode the video stream at a first resolution, and wherein a motion-compensation step of the decoding is performed in the image-domain. It also has a second mode in which it is operable to decode the video stream at a second resolution, and wherein at least one motion-compensation step is performed in the transform-domain. The decoder is adapted to switch between the two modes while decoding the video stream.10-04-2012
20090168887One step sub-pixel motion esitmation - A novel Lucas-Kanade sub-pixel motion estimation method is provided. The motion estimation algorithm enables the estimating of a motion vector with reduced computation cost while maintaining high sub-pixel accuracy. The novel algorithm consists of two processing stages. In the first stage, a conventional motion estimation method is applied to obtain the motion vector at integer-pixel level. In the second stage, the Lucas-Kanade algorithm is applied to improve the motion vector to sub-pixel accuracy based on gradient information. Experimental result shows that the proposed method reaches comparable PSNR performance as conventional ⅛-pel algorithm but with significant saving on computation cost.07-02-2009
20090022227ADAPTIVE THRESHOLD SIGMA-DELTA ALGORITHM MOVEMENT DETECTION DEVICE AND METHOD - Movement detection method comprising at least the following steps: 01-22-2009
20130170552APPARATUS AND METHOD FOR SCALABLE VIDEO CODING FOR REALISTIC BROADCASTING - A scalable video coding apparatus and method for realistic broadcasting are provided. The scalable video coding apparatus may include a spatial scalable coding unit to perform intra-view predictive coding in base layers of a color image and a depth image and prediction in enhancement layers by referencing motion information of the base layer, a signal-to-noise ratio (SNR) scalable coding unit to perform coding using quantization which is a method for SNR scalability of the color image, and a motion estimation device to code the base layer of the depth image using the motion information of the base layer of the color image as prediction data.07-04-2013
20120027096Video compression and encoding method - Disclosed herein is a method for encoding at least one video frame having a plurality of blocks including a current block, including determining motion vectors for each of at least some of blocks surrounding the current block, identifying surrounding blocks having that have the same motion vector and assigning the identified surrounding blocks to a plurality of groups, determining a number of blocks in at least two of the plurality of groups and selecting a motion vector to encode the current block based on the determined number of blocks in the at least two groups.02-02-2012
20120027097METHOD FOR PERFORMING LOCALIZED MULTIHYPOTHESIS PREDICTION DURING VIDEO CODING OF A CODING UNIT, AND ASSOCIATED APPARATUS - A method for performing localized multihypothesis prediction during video coding of a coding unit includes processing the coding unit. More particularly, the step of processing the coding unit further includes: obtaining at least two sets of motion information derived from a set of coded units for multihypothesis motion compensation of the coding unit; and utilizing a linear combination of a plurality of pixel values derived from the at least two sets of motion information derived from the set of coded units as a predicted pixel value of the coding unit. An associated apparatus is also provided.02-02-2012
20120027095MOTION VECTOR DETECTION APPARATUS, MOTION VECTOR DETECTION METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - A motion vector detection apparatus comprising, a memory for storing a reference image for motion prediction encoding, a unit for detecting a first motion vector by comparing the reference image with an encoding target block of a plurality of blocks obtained by dividing a field image, a converter for converting the field image into a frame image by performing interlace/progressive conversion, a unit for generating a reduced image by reducing the frame image, a frame memory for storing the reduced image, and a unit for detecting a second motion vector based on a reference reduced image and a reduced image of the encoding target block of reduced images stored in the frame memory, wherein the second motion vector detected with respect to the reduced image of the encoding target block is used to determine a search area for detecting the first motion vector.02-02-2012
20120027093METHOD AND DEVICE FOR MODIFICATION OF AN ENCODED DATA STREAM - Embodiments provide methods for modification of an encoded data stream of data packets, wherein each data packet comprises one information bit. In the data stream, the information bits of sequential data packets display time intervals from each other which differ from desired time intervals and which are adapted to the desired time intervals by insertion of an artificially encoded, first data packet into the encoded data stream in the encoded domain temporally after a second data packet, or by removal of a fourth data packet present in the encoded data stream from the encoded data stream in the encoded domain.02-02-2012
20120027092IMAGE PROCESSING DEVICE, SYSTEM AND METHOD - According to one embodiment, an image processing device includes a motion detector, a weight predictor, a reference frame selector, an inter-frame predictor, a subtractor, an orthogonal-transferring-quantization module, and an encoder. The motion detector is configured to generate a motion vector using a luminance component of a first reference frame and a luminance component of an encoding target macro block in an input video signal. The weight predictor is configured to generate a second reference frame. The reference frame selector is configured to select one of the first reference frame and the second reference frame as an optimum reference frame. The inter-frame predictor is configured to generate an inter-frame prediction image based on the motion vector and the selected optimum reference image. The subtractor is configured to calculate a prediction residual image between the encoding target macro block and the inter-frame prediction image.02-02-2012
20120027091Method and System for Encoding Video Frames Using a Plurality of Processors - Methods and system provide for the encoding of video frames using a plurality of processors. In one example, a first processor provides a location of a plurality of non-stationary pixels in a current frame by comparing pixel data in the current frame with corresponding pixel data in a previous frame for use by a second processor. The first processor also provides pixel data describing substantially only non-stationary pixels in the current frame, for use by the second processor. The second processor calculates motion vector data for the plurality of non-stationary pixels based on the non-stationary pixel location information and the pixel data describing substantially only non-stationary pixels. The first processor encodes the current frame using the motion vector data for the plurality of non-stationary pixels from the second processor.02-02-2012
20120057634Systems and Methods for Video Content Analysis - Video analytics systems and methods are described that typically comprise a video encoder operable to generate macroblock video analytics metadata (VAMD) from a video frame. Functional modules receive the VAMD and an encoded version of the video frame is configured to generate video analytics information related to the frame using the VAMD and the encoded video frame. The downstream decoder can use the VAMD to obtain a global motion vector related to the frame, detect and track motion of an object within the frame and monitor a line provided or found within the frame. Traversals of the line by a moving object can be detected and counted using information in the VAMD and the line may be part of a polygon that delineates an area to be monitored within the encoded frame. The VAMD can comprise macroblock level and video frame level information.03-08-2012
20120057633Video Classification Systems and Methods - Video encoder systems and methods are described that employ table-based content classification. One or more tables relate quantization parameters and P-points for a frame of video that typically comprises macroblocks. A deviation representative of a difference between original and decoded versions of a macroblock is determined, the deviation being further representative of a distribution frequency of the value of a distortion for a P-point. The P-point corresponds to a distortion value that is associated with a minimum rate difference between encoding modes for a macroblock. A motion complexity index is updated using a quantization parameter and non-zero coefficients of the encoded frame. An encoding mode for the macroblock can be retrieved from the tables using the motion complexity index to reference mode information maintained in the tables.03-08-2012
20120207219PICTURE ENCODING APPARATUS, PICTURE ENCODING METHOD, AND PROGRAM - A picture encoding apparatus includes a feature quantity generation unit and a reference picture list creation unit. The feature quantity generation unit generates feature quantity indicative of dominant one of parallax prediction using reference pictures the viewpoints of which are different from each other and temporal prediction using reference pictures in the temporal direction when a picture is encoded. When an encoding target picture is encoded, the reference picture list creation unit updates a reference picture list including the reference pictures based on the feature quantity generated in a picture which was encoded before the corresponding encoding target picture is encoded.08-16-2012
20120063515Efficient Coding of Video Parameters for Weighted Motion Compensated Prediction in Video Coding - This disclosure relates to techniques for efficient coding of video parameters for weighted motion compensated prediction in video encoding and decoding. A video coding device may code a video block using weighted motion compensated prediction with respect to prediction data generated based on at least one motion vector and video parameter values. The video parameter values may include scale and/or offset parameter values. The techniques reduce signaling overhead by only signaling video parameter values when the motion vector points to a predefined sub-pixel position of a reference block. The techniques include storing a list of predefined sub-pixels associated with the video parameters. When the motion vector points to a sub-pixel position included in the list of predefined sub-pixels, the video coding device may code the video parameter values. The list of predefined sub-pixels may be signaled to a video decoder at a video coding unit or higher level.03-15-2012
20090135910VIDEO APPARATUS TO COMBINE GRAPHICAL USER INTERFACE (GUI) WITH FRAME RATE CONVERSION (FRC) VIDEO AND METHOD OF PROVIDING A GUI THEREOF - A video apparatus to combine a graphical user interface (GUI) with a frame rate conversion (FRC) video. The video apparatus combines a GUI with an area of a video in which a frame rate is converted. By performing a FRC, a moving image having increased quality is provided for a user, and minimizing artifacts from occurring around a boundary of a still image such as a GUI.05-28-2009
20090135913VECTOR SELECTION DECISION FOR PIXEL INTERPOLATION - Methods and apparatus, including computer program products, implementing and using techniques for determining motion vectors to be used for interpolation of intermediary frames in a digital video sequence are disclosed. A first image frame including several image patches is received. A second image frame including one or more image patches corresponding to the image patches in the first image frame is received. For each image patch that occurs in both frames, the following operations occur: forward and backward motion vectors are determined for the image patch in the first image frame, forward and backward motion vectors are determined for the image patch in the second image frame, one motion vector from the first image frame and one motion vector from the second frame are selected and the selected motion vectors are used to establish an intermediary position of the image patch in an interpolated frame between the frames.05-28-2009
20090135914IMAGE INFORMATION ENCODING METHOD AND ENCODER, AND IMAGE INFORMATION DECODING METHOD AND DECODER - In an image information encoder (05-28-2009
20090135912VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.05-28-2009
20120155546VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.06-21-2012
20120155544VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.06-21-2012
20120155541PRUNING DURING VIDEO ENCODING - A method for encoding a first set of pixels in a first image in a sequence of images. From a set of encoding modes, the method selects a first mode for encoding the first set of pixels. The method then determines whether encoding the first set of pixels in the first mode satisfies a set of quality criteria. The method foregoes encoding the first set of pixels in a second mode from the set of encoding modes, when the first mode encoding satisfies the set of quality criteria. Some embodiments provide a video encoding method that examines different methods for encoding a set of pixels in a first image. From a list of possible encoding modes, the method eliminates a set of encoding modes that are not likely to provide a suitable encoding solution. The method then examines different encoding solutions based on the remaining encoding modes in the list.06-21-2012
20120207220METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING ADAPTIVE MOTION VECTOR RESOLUTION - The present disclosure relates to a method and apparatus for improving the encoding efficiency by adaptively changing the resolution of the motion vector in the inter prediction encoding and inter prediction decoding of a video. The video encoding/decoding apparatus includes: a video encoder for determining a motion vector resolution of each area or motion vector of a video and performing an inter prediction encoding of the video by using a motion vector according to the motion vector resolution determined for each area or motion vector; and a video decoder for reconstructing a resolution by extracting resolution information from a bitstream, and then performing an inter prediction decoding by using a motion vector according to the motion vector resolution of each reconstructed area or motion vector.08-16-2012
20120300850IMAGE ENCODING/DECODING APPARATUS AND METHOD - Motion vector for input coding unit is generated, motion compensation is performed on the basis of generated motion vector to generate prediction signal, weight parameter is generated on prediction unit basis, weight parameter is applied to the prediction signal to generate prediction macro block, and residue value is generated on the basis of received coding unit and the prediction block. The same motion parameter is allocated to the merged blocks, and the blocks are transmitted to decoder. Image encoding/decoding method selects interpolating filters to be used in inter-frame prediction based on motion compensation, for units more precise than picture unit, wherein said more precise units include at least one of slice unit and partition unit, and calculates sub-pixel values. According to present invention, quality of encoded image can be improved, and efficiency of encoding high resolution images having resolution higher than high definition (HD) class can be improved.11-29-2012
20120300849ENCODER APPARATUS, DECODER APPARATUS, AND DATA STRUCTURE - An encoding device of the present embodiment includes: an adaptive filter (11-29-2012
20120300848APPARATUS AND METHOD FOR GENERATING AN INTER-PREDICTION FRAME, AND APPARATUS AND METHOD FOR INTERPOLATING A REFERENCE FRAME USED THEREIN - The present disclosure provides an apparatus and a method for generating an inter-prediction frame, and an apparatus and a method for interpolating a reference frame used therein. The apparatus for interpolating the reference frame includes a directivity determiner for determining directivity of a quarter pixel located at the intersection of a left diagonal line and a right diagonal line of a half-pixel unit based on surrounding pixels of the quarter pixel; and an interpolation processor for interpolating a pixel value for the quarter pixel by differently applying a linear interpolation method depending on the directivity determined by the directivity determiner.11-29-2012
20120300847Method and Apparatus for Multiple Description Video Coding - A method and apparatus for utilizing temporal prediction and motion compensated prediction to accomplish multiple description video coding is disclosed. An encoder receives a sequence of video frames and divides each frame into non-overlapping macroblocks. Each macroblock is then encoded using either an intraframe mode (I-mode) or a prediction mode (P-mode) technique. Both the I-mode and the P-mode encoding techniques produce an output for each of n channels used to transmit the encoded video data.11-29-2012
20120300845METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR IMAGE MOTION PREDICTION - A video processing system, method and computer program storage device cooperate to provide a resource and performance efficient sub-pixel motion search operation. Using on the fly calculations it is possible to provide approximations of sub-pixel positions on one image with respect to another image in an image sequence. A sub-pixel position used to set a motion vector for an encoding process may then be identified with reduced processing and memory resources relative to conventional techniques. Also, by later performing a full encoding cost analysis on the earlier identified sub-pixel position, and keeping track of differences, an interpolation accuracy may be dynamically improved by applying the differences to subsequent image frames.11-29-2012
20120155542METHOD AND APPARATUS FOR ENCODING AND DECODING MOTION VECTOR - Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding a motion vector includes: selecting a mode from among a first mode in which information indicating a motion vector predictor of at least one motion vector predictor is encoded and a second mode in which information indicating generation of a motion vector predictor based on pixels included in a previously encoded area adjacent to a current block is encoded; determining a motion vector predictor of the current block according to the selected mode and encoding information about the motion vector predictor of the current block; and encoding a difference vector between a motion vector of the current block and the motion vector predictor of the current block.06-21-2012
20120155543VIDEO CODEC AND MOTION ESTIMATION METHOD - The invention provides a video codec. In one embodiment, the video codec is coupled to an outer memory storing a reference frame, and comprises an interface circuit, an in-chip memory, a motion estimation circuit, and a controller. The interface circuit obtains in-chip data from the reference frame stored in the outer memory. The in-chip memory stores the in-chip data. The motion estimation circuit retrieves search window data from the in-chip data with a search window, and performs a motion estimation process on a current macroblock according to the search-window data. The controller shifts the location of the search window when the current macroblock is shifted, marks a macroblock shifted out from the search window as an empty macroblock, and controls the interface circuit to obtain an updated macroblock for replacing the empty macroblock in the in-chip memory from the reference frame stored in the outer memory.06-21-2012
20120155540PIXEL RETRIEVAL FOR FRAME RECONSTRUCTION - A video decoder receives data representing an encoded image frame partitioned into one or more partitions. The video decoder stores the motion vector associated with each partition. For partitions of size (k*S), k being an integer, and S being the smallest allowed size for a partition, the video decoder stores (k) separate entries of a same value as the value of the motion vector of the corresponding partition. When performing motion compensation to reconstruct the encoded macro-block, such a manner of storing enables the video decoder to retrieve pixel values of best-match partitions associated with each of the corresponding ones of the one or more partitions without having to process partition information specifying the type of the partitions.06-21-2012
20120207221VIDEO CODING DEVICE AND VIDEO DECODING DEVICE - The present invention relates to a device including (i) a spatial-direction prediction vector generating section (08-16-2012
20110069762IMAGE PROCESSING APPARATUS, ELECTRONIC DEVICE, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM STORING IMAGE PROCESSING PROGRAM - An image processing apparatus that performs image registration processing between a plurality of images through a motion vector calculation sets a plurality of motion vector measurement regions on an image, calculates a motion vector in each of the plurality of motion vector measurement regions, specifies a region of interest on the image, determines whether or not each of the plurality of motion vector measurement regions is included in the region of interest, calculates a contribution of each motion vector such that the contribution of the motion vector of a motion vector measurement region included in the region of interest is larger than the contribution of the motion vector of a motion vector measurement region not included in the region of interest, and determines an inter-image motion vector by integrating the motion vectors calculated respectively in the plurality of motion vector measurement regions in accordance with the calculated contribution.03-24-2011
20110075736MOVING IMAGE ENCODING APPARATUS, CONTROL METHOD THEREOF AND COMPUTER-READABLE STORAGE MEDIUM - The present invention enables searching for an appropriate motion vector even with respect to a moving image with a large amount of motion. Further, the present invention enables searching for an appropriate motion vector even with respect to a moving image including an object that does not uniformly move in a frame image. One aspect of embodiments of the present invention relates to a moving image encoding apparatus configured to divide an input image into a plurality of blocks, and to perform predictive encoding using motion compensation for each of the plurality of blocks, the moving image encoding apparatus.03-31-2011
20120121021PREDICTION OF A MOVEMENT VECTOR OF A CURRENT IMAGE PARTITION POINTING TO A REFERENCE ZONE THAT COVERS SEVERAL REFERENCE IMAGE PARTITIONS AND ENCODING AND DECODING USING ONE SUCH PREDICTION - A method and apparatus are provided for predicting a movement vector of a current image partition in relation to a movement vector of a reference partition having the same form as the current image partition and belonging to a reference image (IN-05-17-2012
20120121020MOTION IMAGE ENCODING APPARATUS, MOTION IMAGE DECODING APPARATUS, MOTION IMAGE ENCODING METHOD, MOTION IMAGE DECODING METHOD, MOTION IMAGE ENCODING PROGRAM, AND MOTION IMAGE DECODING PROGRAM - A motion image decoding apparatus for generating a prediction signal in blocks is provided with a low-resolution block decoder for generating a low-resolution block with a smaller number of pixels than that of a prediction block by decoding encoded data. The motion image decoding apparatus is further provided with an enhanced block generator for enhancing a low-resolution block generated by a decoded low-resolution block to a block with the same number of pixels as that of the prediction block using a decoded image. Furthermore, the motion image decoding apparatus is provided with a block divider for generating plural small blocks by dividing an enhanced block based on a predetermined division rule and a small block predictor for generating a predicted small block of a small block using a decoded image and the plural small blocks.05-17-2012
20120121018Generating Single-Slice Pictures Using Paralellel Processors - A video encoding system generates (e.g., H.264) single-slice pictures using parallel processors. Each picture is divided horizontally into multiple segments, where each different parallel processor processes a different segment. Each parallel processor (other than the first parallel processor of the uppermost segment) only partially processes the macroblocks in the first row of its segment. Subsequently, a final processor completes the processing of the partially encoded, first-row macroblocks based on the encoding results for the macroblocks in the last row of the segment above and across the segment boundary. The encoding of the first-row macroblocks is constrained to enable the encoding of all other rows of macroblocks to be completed by the parallel processors, without relying on the final processor.05-17-2012
20100172415VIDEO ENCODER, VIDEO DECODER, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND VIDEO ENCODING AND DECODING SYSTEM - A method and a video decoder for decoding an encoded bitstream of video data in a picture encoding and decoding system are disclosed. The video decoder includes a motion compensation unit for calculating a position for a sample image portion using an encoded bitstream of video data having a motion vector and rounding information. The calculated position of a sample image is rounded with the rounding information. The rounding information indicates the accuracy for rounding, and it is decoded from the bitstream. An image reconstruction unit reconstructs a decoded image portion of the video data from the sample image portion.07-08-2010
20110103486IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The present invention relates to an image processing apparatus and an image processing method capable of preventing a decrease in compression efficiency. A template motion prediction/compensation unit 05-05-2011
20110103485Image Processing Apparatus and Method - The present invention relates to image processing apparatus and method which make it possible to prevent a decrease in compression efficiency without increasing computational complexity.05-05-2011
20110103484Scalable Video Encoder/Decoder with Drift Control - A system, method and computer-readable media are introduced that relate to data coding and decoding. A computing device encodes received data such as video data into a base layer of compressed video and an enhancement layer of compressed video. The computing device controls drift introduced into the base layer of the compressed video. The computing device, such as a scalable video coder, allows drift by predicting the base layer from the enhancement layer information. The amount of drift is managed to improve overall compression efficiency.05-05-2011
20110103483VIDEO ENCODING APPARATUS AND METHOD - A video encoding apparatus includes a motion estimation module, an information providing module, a filtering module, a motion compensation module, and a converting module. The motion estimation module performs a plurality of modes of motion estimations on macro-blocks included in an input frame and provides a motion-estimated frame which conforms to a predetermined standard. The information providing module receives motion vectors and mode information of the plurality of modes of motion estimations to provide an encoding information signal. The filtering module filters the motion-estimated frame to provide a filtered frame based on the encoding information signal. The motion compensation module performs motion compensation on the filtered frame to provide a motion-compensated frame. The converting module performs a spatial conversion on the motion-compensated frame.05-05-2011
20110103480GLOBAL MOTION PARAMETER ESTIMATION USING BLOCK-BASED MOTION VECTORS - Techniques for estimating global motion parameters based on block-based motion vectors are described. Horizontal and vertical motion parameters are estimated independently. A video processing device, in one example, generates horizontal motion parameter candidates for each row and vertical motion parameter candidates for each column, and selects the median of the horizontal motion parameter candidates as the global horizontal motion parameter and the median of the vertical motion parameter candidates as the global vertical motion parameter. The video processing device may further eliminate candidates by calculating error values for each candidate and remove those candidates with error values below an error threshold. The video processing device may also use pre-calculated values of matrices when calculating each of the candidates to further improve efficient calculation of the global motion parameters.05-05-2011
20120134416Method and Apparatus for Derivation of MV/MVP Candidate for Inter/Skip/Merge Modes - A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block. The co-located reference blocks comprise an above-left reference block of the bottom-right neighboring block of the co-located block. The reference motion vectors associated with the co-located reference blocks are received and used to derive the temporal MVP. Various configurations of co-located reference blocks can be used to practice the present invention. If the MVP cannot be found based on the above-left reference block, search for the MVP can be continued based on other co-located reference blocks. When an MVP is found, the MVP is checked against the previously found MVP. If the MVP is the same as the previously found MVP, the search for MVP continues.05-31-2012
20120121019IMAGE PROCESSING DEVICE AND METHOD - The present invention relates to an image processing device and method enabling second order prediction to be performed even in the event that adjacent pixels adjacent to a reference block exist outside an image frame.05-17-2012
20120170659ADVANCE VIDEO CODING WITH PERCEPTUAL QUALITY SCALABILITY FOR REGIONS OF INTEREST - A video compression framework based on parametric object and background compression is proposed. At the encoder, an object is detected and frames are segmented into regions corresponding to the foreground object and the background. The encoder generates object motion and appearance parameters. The motion or warping parameters may include at least two parameters for object translation; two parameters for object scaling in two primary axes and one object orientation parameter indicating a rotation of the object. Particle filtering may be employed to generate the object motion parameters. The proposed methodology is the formalization of the concept and usability for perceptual quality scalability layer for Region(s) of Interest. A coded video sequence format is proposed which aims at “network friendly” video representation supporting appearance and generalized motion of object(s).07-05-2012
20120170658Concealment Of Data Loss For Video Decoding - In an embodiment, a system includes a receiver for receiving a video signal over a lossy medium and a decoder coupled to the receiver and arranged to decode the video signal for output to a display. The decoder includes a concealment module for regenerating a portion of image data lost from the video signal over said medium, by interpolating or extrapolating from other image data of the video signal received over the medium. The decoder comprises a controller configured to select, based on a measure of loss effect estimated for the portion of image data, whether (i) to apply the concealment module to regenerate the portion of image data, or alternatively (ii) to freeze preceding image data of the video signal in place of the portion of image data.07-05-2012
20100091876VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091872VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091870VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091868VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091877VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091869VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091863Low-Power And High-Throughput Design Of Fast Motion Estimation VLSI Architecture For Multimedia System-On-Chip Design - A method of fast motion estimation in VLSI architecture with low-power and high-throughput for multimedia System-on-Chip design is disclosed. The method uses the data prediction and data reuse technique to find out the best matching block within the search range of the reference frame for the target block in the current frame in order to obtain the respective motion vector. The external memory bandwidth and the internal memory size in the video coding system are significantly reduced so as to speed up the process of motion estimation and most of the power consumption for the motion estimation process is further saved in the embedded video coding systems.04-15-2010
20100091867VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091866VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.04-15-2010
20100091859MOTION COMPENSATION APPARATUS AND A MOTION COMPENSATION METHOD - A motion compensation apparatus and a motion compensation method are provided. The motion compensation apparatus comprises: a memory, a motion vector generator, a deviation calculator, a determining module, a selector and a motion compensator. The memory stores a plurality of frame encode information and a plurality of decoded frames; the motion vector generator generates a motion vector according to the plurality of frame encode information; the deviation calculator calculates a deviation data according to the motion vector and the plurality of decoded frames; the determining module determines a confidence level of the motion vector according to the deviation data; the selector selects a plurality of pixels from the plurality of decoded frames according to the motion vector when the confidence level is high; and the motion compensator compensates the plurality of decoded frames according to the plurality of pixels.04-15-2010
20100290532MOVING IMAGE ENCODER AND MOVING IMAGE DECODER - A moving image encoder includes a luminance variation detection/compensation section (11-18-2010
20100290531METHOD AND DEVICE FOR CODING A VIDEO SEQUENCE - To code a video sequence, the similarity is calculated (11-18-2010
20100290528REAL-TIME VIDEO IMAGE PROCESSING - A video processing device includes a video preprocessor and a video processor. The video processor is configured to facilitate inputting preprocessed digital video data ready for further processing by an encoder or a transcoder, compressing the preprocessed digital video data to form compressed digital video data, and outputting the compressed digital video data. The video preprocessor operable to receive digital video raw data, configured to facilitate preprocessing a macroblock of the digital video raw data so as to output the preprocessed digital video data ready for an encoder or transcoder of the video processor when the macroblock does not indicate SKIP, and not preprocessing the macroblock of the digital video raw data when the macroblock is a SKIP macroblock indicating SKIP, but jumping to process the SKIP macroblock by an entropy encoder of the video processor instead.11-18-2010
20100246683Error Resilience in Video Decoding - A method for decoding an encoded video stream is provided that includes when a sequence parameter set in the encoded video stream is lost, wherein the sequence parameter set includes a frame number parameter, a picture order count parameter, a picture height parameter, a picture width parameter, and a plurality of non-critical parameters, assigning default values to the plurality of non-critical parameters, setting the picture height parameter and the picture width parameter based on a common pixel resolution, when a slice header of an instantaneous decoding refresh picture is available, determining the frame number parameter from the slice header, and determining the picture order count parameter using the frame number parameter, the default values, the pixel height parameter, and the picture width parameter, and using the parameters to decode a slice in the encoded video stream.09-30-2010
20100246680REFERENCE PICTURE PREDICTION FOR VIDEO CODING - A video coder includes a forward coder and a reconstruction module determining a motion compensated predicted picture from one or more previously decoded pictures in a multi-picture store. The reconstruction module includes a reference picture predictor that uses only previously decoded pictures to determine one or more predicted reference pictures. The predicted reference picture(s) are used for motion compensated prediction. The reference picture predictor may include optical flow analysis that uses a current decoded picture and that may use one or more previously decoded pictures together with affine motion analysis and image warping to determine at least a portion of at least one of the reference pictures.09-30-2010
20100246682SCALED MOTION SEARCH SECTION WITH DOWNSCALING AND METHOD FOR USE THEREWITH - A scaled motion search section can be used in a video processing device that processes a video input signal that includes a plurality of pictures. The scaled motion search section includes a downscaling module that downscales the plurality of pictures to generate a plurality of downscaled pictures. A reduced-scale motion search module generates a plurality of motion vector candidates at a downscaled resolution, based on the plurality of downscaled pictures. A full-scale motion search module generates a plurality of motion search motion vectors at a full resolution, based on a plurality of reference pictures and further based on the plurality of motion vector candidates.09-30-2010
20100246684VIDEO ENCODER AND ITS DECODER - A video encoder according to the present invention improves coding efficiency of a super high definition video by setting an area of MB size and optimally determining size of the area. A locally decoded image (a) is subjected to frequency analysis in a frequency analyzing unit. Based on the result, an area setting unit sets a local area in a picture to which the maximum MB size is applied. An area boundary correcting unit corrects an area boundary in accordance with a representative motion characteristic, and an N-value calculating unit determines the maximum MB size (N×N) of each area based on a result of encoding a neighboring picture. The area setting and the N-value calculation are performed step by step.09-30-2010
20100246681ADAPTIVE PARTITION SUBSET SELECTION MODULE AND METHOD FOR USE THEREWITH - A partition subset selection module selects a subset of available partitions for a macroblock pair of the plurality of macroblock pairs, based on motion search motion vectors generated by a motion search section, and further based on a macroblock adaptive frame and field indicator. A motion refinement module generates refined motion vectors for the macroblock pair, based on the subset of available partitions for a macroblock pair.09-30-2010
20120213286LOCAL PICTURE IDENTIFIER AND COMPUTATION OF CO-LOCATED INFORMATION - Video decoding innovations for using local picture identifiers and computing co-located information are described. In one aspect, a decoder identifies reference pictures in a reference picture list of a temporal direct prediction mode macroblock that match reference pictures used by a co-located macroblock using local picture identifiers. In another aspect, a decoder determines whether reference pictures used by blocks are the same by comparing local picture identifiers during calculation of boundary strength. In yet another aspect, a decoder determines a picture type of a picture and based on the picture type selectively skips or simplifies computation of co-located information for use in reconstructing direct prediction mode macroblocks outside the picture.08-23-2012
20120163459DIRECTIONAL MOTION VECTOR FILTERING - An appropriate motion vector to assign to a pixel in a digital video frame is performed by a comparison of motion vectors of particular surrounding pixels. Direction of at least one of color transition or color brightness transition in the digital video frame is detected to detect direction of object boundaries in the digital video frame. The particular surrounding pixels are selected and grouped (filtered) according to the detected object boundary direction at each pixel. A comparison of the motion vectors of the surrounding pixels then provides information on which group of pixels to assign a current pixel being processed based in part on how close the motion vectors of the surrounding groups match a group pixels to which the pixel being processed belongs.06-28-2012
20120128073VIDEO ENCODING APPARATUS AND A VIDEO DECODING APPARATUS - According to one embodiment, a video encoding apparatus is a video encoding apparatus for subjecting a video image to motion compensated prediction coding, includes an acquisition module to acquire available blocks of blocks having motion vectors from encoded blocks adjacent to a to-be-encoded block and number of the available blocks, an acquisition/selection module to select one selection block from the encoded available blocks, a selection information encoder to encode selection information specifying the selection block using a code table corresponding to the number of available blocks, and an image encoder to subject the to-be-encoded block to motion compensated prediction coding using a motion vector of the selection block.05-24-2012
20120128072IMAGE CONVERTING APPARATUS, IMAGE REPRODUCING APPARATUS, AND IMAGE CONVERTING METHOD - An image reproducing apparatus that achieves a higher readiness, high-speed backward reproduction, and a minimum amount of data, at a time of executing a backward reproduction. An encoder-side intra predictor transcodes decode images of a front end and a back end of a GOP of an image stream. An encoder-side motion compensator transcodes a decode image other than that of the front end of the GOP of the image stream by setting a motion vector to 0 and using an immediately preceding reference image.05-24-2012
20120128071APPARATUS AND METHOD FOR PERFORMING ERROR CONCEALMENT OF INTER-CODED VIDEO FRAMES - An embodiment relates to performing error concealment of a corrupted block in a video frame, which is capable of performing a real time reconstruction of corrupted blocks which allow to precisely recover small details and fine movements, in particular, the error concealment apparatus and method according to an embodiment selects a replacement block by taking into account the luminance distortion and the motion characteristics of the video sequence. The latter is represented by the distance of the motion vectors chosen as candidate replacements and the average value of the motion vectors of the blocks surrounding the missing block in the current frame.05-24-2012
20120163467METHOD, MEDIUM, AND SYSTEM ENCODING AND/OR DECODING MOVING PICTURES BY ADAPTIVELY APPLYING OPTIMAL PREDICATION MODES - A method, medium, and system encoding and/or decoding a moving picture. The moving picture encoding method may include selecting a prediction mode that is optimal for the macro blocks, which correspond to each other, of the color components of a current image based on the characteristics of a predetermined image, generating a predicted image for the current image according to the selected prediction mode, and encoding a moving picture using the predicted image. An optimal prediction mode can be adaptively applied to the macro blocks, which correspond to each other, of the color components, thereby increasing the moving picture's encoding and decoding efficiencies.06-28-2012
20120163464CONCEPT FOR ENCODING DATA DEFINING CODED ORIENTATIONS REPRESENTING A REORIENTATION OF AN OBJECT - Embodiments of the present invention provide an encoder for encoding data defining coded orientations representing a reorientation of an object based on spatio-temporal data representing a time series of orientations of the object. The encoder includes a deriver, a selector, and a coder. The deriver is configured for deriving a plurality of components describing an orientation change difference between a last coded orientation change from a second last coded orientation to a last coded orientation, and a current orientation change from the last coded orientation to a current orientation of the object. The selector is configured for selecting a component of the plurality of components describing the orientation change difference. The coder is configured for coding the current orientation of the object based on the select component of the plurality of components describing the orientation change difference, thereby defining a current coded orientation.06-28-2012
20120163461MOTION ESTIMATION APPARATUS AND METHOD - Disclosed is a motion estimation apparatus and method capable of reduce a memory bandwidth by accessing reference image data occupying the largest part of the memory bandwidth based on a result of motion estimation skip determination. The motion estimation apparatus includes a motion estimation skip determination unit, a sum absolute of absolute difference (SAD) processing unit and a multiplexer (MUX) unit. The motion estimation skip determination unit determines the presence of motion estimation skip by reading current image data and skip reference image data, and outputs a motion vector in a skip mode. The SAD processing unit calculates an SAD value by reading the current image data and reference image data and outputs a motion vector in a normal mode. The MUX unit outputs the motion vector in the skip mode or the motion vector in the normal mode as a final motion vector based on a skip flag signal.06-28-2012
20120163460SUB-PIXEL INTERPOLATION FOR VIDEO CODING - In one example, an apparatus includes a video coder configured to determine a first set of support pixels used to interpolate a value for a first sub-integer pixel position of a pixel of a reference block of video data; determine a second, different set of support pixels used to interpolate a value for a second sub-integer pixel position of the pixel; determine a third, different set of support pixels used to interpolate a value for a third sub-integer pixel position of the pixel; combine corresponding values from the first, second, and third sets of support pixels; apply an interpolation filter to the combined values to calculate a value for a fourth sub-integer-pixel comprising a one-eighth-integer position of the pixel and code a portion of a current block of the video data relative to the fourth one-eighth-integer pixel position of the reference block.06-28-2012
20120163466IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes: adding, to a candidate list, a first adjacent motion vector as a candidate for a predicted motion vector to be used for coding the current motion vector; selecting the predicted motion vector from the candidate list; and coding the current motion vector, wherein in the adding, the first adjacent motion vector indicating a position in a first reference picture included in a first reference picture list is added to the candidate list for the current motion vector indicating a position in a second reference picture included in a second reference picture list.06-28-2012
20120163465METHOD FOR ENCODING A VIDEO SEQUENCE AND ASSOCIATED ENCODING DEVICE - The invention concerns a method for encoding a video sequence comprising generating first and second reconstructions of the same first image using different reconstruction offsets when inverse quantizing transformed blocks, these two reconstructions being possible reference images for encoding another image in the sequence, wherein generating the second reconstruction comprises selecting a subset from the possible reconstruction offsets; generating image reconstructions of the first image using each offset of the subset; determining, as a first optimum offset θ06-28-2012
20120163463CONCEPT FOR ENCODING DATA DEFINING CODED POSITIONS REPRESENTING A TRAJECTORY OF AN OBJECT - Encoder for encoding data defining coded positions representing a trajectory of an object based on spatio-temporal data representing a time series of positions of the object. The encoder comprises a deriver, a selector, and a coder. The deriver is configured for deriving a plurality of components of a motion vector difference between a last coded motion coded vector pointing from a second last coded position to a last coded position and a current motion vector pointing from the last coded position to a current position of the object. The selector is configured for selecting a component of the plurality of components of the motion vector difference. The coder is configured for coding the current motion vector based on the selected component of the motion vector difference to obtain a current coded motion vector, thereby defining a current coded position.06-28-2012
20120163462MOTION ESTIMATION APPARATUS AND METHOD USING PREDICTION ALGORITHM BETWEEN MACROBLOCKS - Disclosed is a motion estimation apparatus and method using a prediction algorithm between macroblocks. In the motion estimation method, an average of a motion vector of a macroblock 06-28-2012
20080317129SYSTEM AND METHOD FOR PERIODIC PATTERN DETECTION FOR MOTION COMPENSATED INTERPOLATION - A method for detecting a pattern in an image includes defining a set of pixel values in an image using a window and calculating a Fourier transform of the pixel values. In one embodiment, the Fourier transform of the pixel values forms a spectrum. The method further comprises analyzing the spectrum of the Fourier transform to find a peak and analyzing the peak to determine whether the peak is indicative of the presence of a pattern in the image.12-25-2008
20100208824MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE DECODING DEVICE - When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.08-19-2010
20100208821VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.08-19-2010
20100208823MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE DECODING DEVICE - When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.08-19-2010
20100208820MOTION ESTIMATION APPROACH FOR REAL-TIME EMBEDDED MULTIMEDIA DESIGN - A method for performing motion estimation is provided. The method includes the following steps: selecting a current block in a current frame; obtaining motion vectors and residual data of a plurality of neighboring blocks adjacent to the current block; setting a predetermined threshold value according to the residual data of the plurality of neighboring blocks; comparing the current block with an initial reference block in a reference frame to obtain an initial comparison result, and comparing the predetermined threshold value with the initial comparison result; determining a predicted motion vector of the current block according to the motion vectors of the plurality of neighboring blocks if the initial comparison result is larger than the predetermined threshold value; and performing a block-matching operation in a search window corresponding to the predicted motion vector to determine a corresponding reference block which best matches the current block.08-19-2010
20110182361IMAGE DECODING METHOD AND IMAGE CODING METHOD - The present invention is directed to improve compression efficiency by variable-length coding in accordance with characteristics of image data to be processed. An apparatus for compressing quantized data by variable-length coding includes: a statistical information storing memory (07-28-2011
20120314771METHOD AND APPARATUS FOR INTERPOLATING REFERENCE PICTURE AND METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING SAME - The present disclosure relates to a method and apparatus for interpolating a reference picture and a method and apparatus for encoding/decoding a video using the same. The apparatus for interpolating the reference picture selects a plurality of filters for interpolating the reference picture and generates a reference picture having a target precision through a multi-stage filtering of the reference picture by using a plurality of filters. The compression efficiency of the video may be improved by interpolating a reference picture through the determination of a filter of a filter coefficient for interpolating the reference picture according to characteristics of the video and interpolating the reference picture through a multi-stage filtering or adaptively changing resolutions of motion vectors in the unit of predetermined areas.12-13-2012
20120314772OPTICAL FLOW BASED MOTION VECTOR ESTIMATION SYSTEMS AND METHODS - Certain aspects of a method and system for optical flow based motion vector estimation for picture rate up-conversion (PRUC) may include generating one or more motion vectors based on extracted picture rate up-conversion (PRUC) data by minimizing a cost function. The cost function may be constrained by any combination of a block matching constraint, a smoothness constraint and a bias constraint. The PRUC data may be extracted from a compressed video data stream while the compressed video data stream is being decompressed by a video decompression engine. The PRUC data may comprise local block motion vectors, block coding modes, quantization levels, quantized residual data and decoded pictures. A plurality of interpolated pictures may be generated based on extracting the PRUC data.12-13-2012
20120213287PICTURE ENCODING METHOD AND PICTURE DECODING METHOD - A picture encoding method of the present invention is a picture encoding method of predictively encoding an input picture with reference to pictures stored in a picture buffer, decoding the encoded input picture, judging whether or not the decoded picture is a picture for reference and whether or not the decoded picture is a picture for output which needs to be stored until its display time, and storing, in the picture buffer, the picture for reference and the picture for output based on the determination result.08-23-2012
20120213288VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, AND DATA STRUCTURE - As a prediction vector is set a prediction vector selected from one of a first prediction vector candidate and a prediction vector candidate in accordance with an encoding cost. The prediction vector candidate is a prediction vector candidate selected from one of a second prediction vector candidate and a third prediction vector candidate in accordance with a predictive accuracy of the third prediction vector candidate. The first prediction vector candidate is a median of motion vectors assigned to respective partitions surrounding a target partition. The second prediction vector candidate is a motion vector assigned to a partition adjacent to a left side of the target partition. The third prediction vector candidate is a motion vector assigned to a collocate partition identical in location to the target partition of a decoded frame.08-23-2012
20120213285MOTION VECTOR DETECTION APPARATUS AND METHOD - According to one embodiment, a motion vector detection apparatus includes following units. The layering unit generates layers with different resolutions for each of first and second images. The first extraction unit extracts a space candidate vector. The second extraction unit extracts a time candidate vector. The third extraction unit extracts a layer candidate vector. The determination unit determines a motion vector to be assigned to the target block, based on correlations between the target block and blocks, the blocks being located in a layer which corresponds to the second image and being specified by assigning, to the target block, the space, time, and layer candidate vectors.08-23-2012
20120134419METHODS FOR ENCODING AND DECODING A SIGNAL OF IMAGES, CORRESPONDING ENCODING AND DECODING DEVICES, SIGNAL AND COMPUTER PROGRAMS - A method is provided for encoding an image signal that includes motion information, by selecting a motion vector from among a set of at least three candidate vectors for at least one actual block of an actual image to be encoded. The method includes: determining an optimal-selection subset containing some of the candidate vectors; selecting the motion vector from among the vectors of the optimal-selection subset; and inserting into the signal a piece of information designating the motion vector selected from among the vectors of the optimal-selection subset.05-31-2012
20100195733VIDEO SCENE CHANGE DETECTION AND ENCODING COMPLEXITY REDUCTION IN A VIDEO ENCODER SYSTEM HAVING MULTIPLE PROCESSING DEVICES - A method of encoding a video frame is disclosed in which video slices of the video frame are initially encoded in parallel using both interframe encoding and intraframe encoding. Then, after a first predetermined minimum amount of the video frame has been encoded, the method includes periodically determining whether the amount of intraframe encoded information for the frame achieves a first threshold, and when the first threshold is achieved, encoding the remainder of the video frame using only intraframe encoding. The method may include determining whether a lower second threshold is achieved based on relative complexity of the frame and quantization. The method may include performing similar comparisons on a slice by slice basis in which any one or more of the processing devices skips motion estimation and interframe encoding for corresponding video slices. A video encoder is disclosed which includes multiple processing devices and a shared memory.08-05-2010
20120213289DECODING DEVICE, CONTROL METHOD FOR A DECODING DEVICE, TRANSMISSION SYSTEM, AND COMPUTER-READABLE RECORDING MEDIUM HAVING A CONTROL PROGRAM RECORDED THEREON - A decoding device outputs an output signal by receiving, as an input, an encoded signal including a signal in which an original signal is encoded, the original signal being indicative of contents of at least one of image and audio, and the output signal being indicative of the contents. The decoding device includes a decoding process section that generates a decoded signal, and a nonlinear process section that generates a nonlinear process signal (i) in which positive and negative signs of a low-frequency-free signal are retained, which low-frequency-free signal is obtained by removing from the input signal at least a direct current of frequency components included in the decoded signal, and (ii) which broadly monotonically increases nonlinearly with respect to the low-frequency-free signal when values of the low-frequency-free signal are at least in the vicinity of 0. The nonlinear process signal is added to the decoded signal.08-23-2012
20120213284MULTIMEDIA DEVICE AND MOTION ESTIMATION METHOD THEREOF - A motion estimation method is provided for generating a motion vector of a to-be-generated frame between two continuous reference frames. The method includes the following steps. A candidate motion vector is obtained according to the position of a to-be-generated block of a to-be-generated frame. Two first reference blocks are obtained from the two reference frames by extending the candidate motion vector from the to-be-generated block to the two reference frames, respectively. Two second reference blocks are obtained from the two reference frames by extending the candidate motion vector from one reference frame to another reference frame. Whether the candidate motion vector is valid is determined according to the positions of the two reference blocks obtained in each obtaining step. The corresponding motion vector of the to-be-generated block is determined according to the valid candidate motion vector.08-23-2012
20120213282METHOD AND APPARATUS FOR ENCODING AND DECODING MULTI-VIEW VIDEO - A method and apparatus for encoding and decoding a multi-view video by encoding and decoding a current block the multi-view image using a reference frame having a view different than a view of a current frame of the current block.08-23-2012
20090060045MOVING PICTURE ENCODING APPARATUS AND MOVING PICTURE ENCODING METHOD - According to one embodiment, a reference macroblock determination module determines, with respect to each of the peripheral macroblocks corresponding to the to-be-encoded macroblock, whether the macroblock is an encoded macroblock or not, determines, if the macroblock is the encoded macroblock, the macroblock as a reference macroblock which is to be used in order to determine a prediction mode candidate of the to-be-encoded macroblock, and to determine, if the macroblock is a non-encoded macroblock, an encoded macroblock, which is present in an encoded picture immediately preceding the to-be-encoded picture and which is present at the same spatial position as the macroblock, as the reference macroblock. A reference macroblock with a lowest cost is selected from these reference macroblocks, and the same prediction mode as the prediction mode of the selected reference macroblock is determined as a prediction mode candidate.03-05-2009
20090060044DIGITAL BROADCASTING SYSTEM AND DATA PROCESSING METHOD - The present invention provides a method of processing data in digital broadcasting system. The method includes receiving a broadcast signal including mobile broadcast service data and main broadcast service data, wherein the mobile broadcast service data configures a data group, wherein the data group is divided into a plurality of regions, wherein N number of known data sequences are inserted in some regions among the plurality of regions, and wherein a transmission parameter is inserted between a first known data sequence and a second known data sequence, among the N number of known data sequences, detecting the transmission parameter from the mobile broadcast service data, controlling power based upon the detected transmission parameter, thereby receiving a data group including requested mobile broadcast service data, extracting video data from the mobile broadcast service data and decoding the extracted video data, the decoding step comprising performing overlap smoothing on the video data and performing loop filtering on the overlap-smoothed video data.03-05-2009
20090060043MULTIVIEWER BASED ON MERGING OF OUTPUT STREAMS OF SPATIO SCALABLE CODECS IN A COMPRESSED DOMAIN - A viewer system, components and method that are operable to efficiently merge data streams prior to decoding them, and then transmit the merged data stream for decoding and displaying. Unlike prior art multiple encoded image viewing solutions, the present system and method enables the use of significantly less bandwidth and less resources for decoding the data stream to provide a more efficient viewer system.03-05-2009
20090060041SYSTEM AND METHOD FOR MOTION VECTOR COLLECTION FOR MOTION COMPENSATED INTERPOLATION OF DIGITAL VIDEO - A system and method of collection motion vectors for motion compensated interpolation of digital video are disclosed. For example, one embodiment includes a method of identifying motion vectors for interpolating a portion of a digital video signal. The method comprises identifying a plurality of motion vectors indicative of differences between first and second frames of a digital video signal and projecting each of the motion vectors to a location within a third frame at a time associated with the third frame. The method further includes determining a measure of overlap of each projected location with a portion of a third frame to be interpolated, selecting at least one motion vector based on the measure, and generating at least a portion of a third frame based on the selected at least one motion vector selected. Other embodiments include a system and device configured to perform the method.03-05-2009
20120250769HYBRID VIDEO CODING - A further coding efficiency increase is achieved by, in hybrid video coding, additionally predicting the residual signal of a current frame by motion-compensated prediction using a reference residual signal of a previous frame. In other words, in order to further reduce the energy of the final residual signal, i.e. the one finally transmitted, and thus increase the coding efficiency, it is proposed to additionally predict the residual signal by motion-compensated prediction using the reconstructed residual signals of previously coded frames.10-04-2012
20120170653BLOCK BASED SAMPLING CODING SYSTEMS - A block based sampling (BBS) encoding system to process an incoming video signal into a compressed video bitstream. The BBS encoding system includes a processor to determine anchor blocks in a picture from the incoming video signal. The processor is also to encode the anchor blocks in the picture, and may also encode interpolated blocks in the picture using at least one of the encoded anchor blocks. There is also a block based sampling (BBS) decoding system to decode pictures from an incoming compressed video bitstream. The BBS decoding system includes a processor to receive the incoming compressed video bitstream including anchor block coding decisions about anchor blocks in a pattern in a picture, and decode the received anchor block coding decisions to form the anchor blocks in the pattern in the picture.07-05-2012
20120170661SCALABLE VIDEO CODING METHOD AND APPARATUS AND SCALABLE VIDEO DECODING METHOD AND APPARATUS - Provided are a scalable video coding method and apparatus, and a scalable video decoding method and apparatus. The coding method generates a base layer bitstream of video by using one of a plurality of codecs, determines whether the used codec supports enhancement layer coding, decodes the base layer bitstream according to the result of the determination in order to extract coded information used for the generation of the base layer bitstream, and generates an enhancement layer bitstream of the original video based on the extracted information. Accordingly, it is possible to provide high-quality video and increase coding efficiency while using the various existing codecs.07-05-2012
20120170660REFINEMENT OF MOTION VECTORS IN HIERARCHICAL MOTION ESTIMATION - A method of motion estimation (ME) refinement. The method generally includes the steps of (A) generating an initial motion vector (MV) by conducting a first ME on an initial block in a picture, the initial block covering an initial area of the picture, (B) generating a current MV by conducting a second ME on a current block in the picture, (i) the current block covering a subset of the initial area and (ii) the second ME being seeded by the initial MV, (C) generating at least one additional MV by conducting at least one third ME on the current block, the at least one third ME being seeded respectively by at least one neighboring MV spatially adjacent to the current MV and (D) generating a refined MV of the current block by storing in a memory a best among the current MV and the additional MV.07-05-2012
20120170657COMPENSATION DE-INTERLACING IMAGE PROCESSING APPARATUS AND ASSOCIATED METHOD - A motion compensation de-interlacing image processing apparatus is provided. The apparatus includes a motion compensation module, a still compensation module, a motion detection module, and a de-interlacing blending module. The motion compensation module generates a motion compensation pixel according to at least one of a current field, a previous field, and a next field of a target pixel to be interpolated. The still compensation module generates a still compensation pixel according to the previous field and the next field of the target pixel. The motion detection module determines a motion index according to the previous field and the next field of the target pixel. The de-interlacing blending module generates the target pixel by weighted averaging the motion compensation pixel and the still compensation pixel according to the motion index.07-05-2012
20120170656IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus includes: an image processing section adapted to calculate a motion vector of an image signal between a plurality of frames; a first control section adapted to programmably control the image processing section to execute motion detection; and a second control section adapted to control the first image processing section in a processing state determined in advance to execute motion detection.07-05-2012
20120170655VIDEO FRAME ENCODING TRANSMITTER, ENCODING METHOD THEREOF AND OPERATING METHOD OF VIDEO SIGNAL TRANSMITTING AND RECEIVING SYSTEM INCLUDING THE SAME - An encoding method comprises receiving a plurality of video frames including first and third reference frames (F07-05-2012
20120170654VIDEO CODING SYSTEM USING IMPLIED REFERENCE FRAMES - A video coding/decoding system builds implied reference frames from a plurality of reference frames developed during coding. Coded data of reference pictures are decoded and stored in a reference picture cache. An implied reference frame may be derived from a plurality of reference frames and may be stored in the reference picture cache. Thereafter, coding of new input data may proceed using the implied reference frame as a source of prediction. The method may be used to identify visual elements such as background elements that may persist in video over a longer period that can be captured by the system under conventional reference frames assembly and eviction. Implied reference frames may be built at both an encoder and a decoder to serve as sources of prediction.07-05-2012
20120230415METHOD AND APPARATUS FOR MPEG-2 TO H.264 VIDEO TRANSCODING - A method for transcoding from an MPEG-2 format to an H.264 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the MPEG-2 format to generate a plurality of macroblocks; (B) determining a plurality of indicators from a pair of the macroblocks, the pair of the macroblocks being vertically adjoining; and (C) coding the pair of the macroblocks into an output video stream in the H.264 format using one of (i) a field mode coding and (ii) a frame mode coding as determined from the indicators.09-13-2012
20120224633VIDEO DECODER WITH SHARED MEMORY AND METHODS FOR USE THEREWITH - A video decoder includes an entropy decoding device that includes a first processor that generates first entropy decoded (EDC) data from a first portion of an encoded video signal and further that generates second EDC data from a second portion of the encoded video signal. A general video decoding device includes a second processor that generates a first portion of a decoded video signal from the first EDC data and that further generates a second portion of the decoded video signal from the second EDC data. A shared memory includes at least one buffer that is accessed by the general video decoding device via absolute memory addressing.09-06-2012
20120257676APPARATUS AND METHOD FOR CODING USING MOTION VECTOR SEGMENTATION - Disclosed herein is a method for encoding a video signal having at least one frame with a plurality of blocks having pixels. The method includes determining motion vectors for a first block in the at least one frame and at least some of the blocks that are neighbors to the first block, identifying neighboring blocks having motion vectors that are similar to the motion vector of the first block, assigning the first block and the identified neighboring blocks to a segment using a processor, applying a segment parameter to at least one block in the segment and encoding the at least one block using the segment parameter.10-11-2012
20120257677ENCODING AND DECODING MOTION VIA IMAGE SEGMENTATION - A system and method for encoding and decoding a video image having a plurality of frames is disclosed. The method includes a previously reconstructed frame that is segmented to create an alternate reference frame used to encode a current frame. The segments of the previously reconstructed frame are assigned motion parameters, which are used to compile the alternate reference frame. The current frame is encoded and the segmentation parameters and motion parameters are transmitted in the bitstream. The segmentation parameters and motion parameters can be used by a decoder to recreate the alternate reference frame in order to decode the encoded current frame.10-11-2012
20090122866DOMINANT MOTION ESTIMATION FOR IMAGE SEQUENCE PROCESSING - Herein is described a method of estimating dominant motion between a current frame n and another frame m of an image sequence having a plurality of frames, the method comprising generating integral projections of the images and using gradients of those projections and using differences between the projections. The input may be any sequence of image frames from an image source, such as a video camera, an IR or X-ray imagery, radar, or from a storage medium such as computer disk memory, video tape or a computer graphics generator.05-14-2009
20090110074Method and System for Motion Compensated Picture Rate Up-Conversion Using Information Extracted from a Compressed Video Stream - Certain aspects of a method and system for motion-compensated picture rate up-conversion (PRUC) using information extracted from a compressed video stream may include extracting PRUC data from a compressed video data stream while the compressed video data stream is being decompressed by a video decompression engine. The PRUC data may comprise, for example, local block motion vectors, block coding modes, quantization levels, quantized residual data and decoded pictures. A plurality of interpolated pictures may be generated based on extracting the PRUC data.04-30-2009
20120076208MEMORY REDUCED H264/MPEG-4 AVC CODEC - A method for reducing memory utilization in a digital video codec. The method generally includes the steps of (A) generating a second reference picture by downsampling a first reference picture using a pattern, wherein the pattern (i) comprises a two-dimensional grid and (ii) is unachievable by performing a vertical downsampling and separately performing a horizontal downsampling, (B) generating a third reference picture by upsampling the second reference picture and (C) processing an image in a video signal using the third reference picture.03-29-2012
20120076207MULTIPLE-CANDIDATE MOTION ESTIMATION WITH ADVANCED SPATIAL FILTERING OF DIFFERENTIAL MOTION VECTORS - A system and method of performing motion estimation in a video encoder is enclosed. The system and method include calculating one or more candidate motion vectors for each macroblock of a video image to form a list of candidate motion vectors, calculating a second one or more candidate motion vectors using a sub-region of at least one macroblock of the video image to include in the list of candidate motion vectors, and comparing the calculated candidate motion vectors of a first macroblock with the calculated candidate motion vectors of at least one sub-region of the first macroblock to provide the estimated contribution to the candidate motion vector of the macroblock. The calculating a second one or more candidate motion vectors using a sub-region of at least one macroblock may include using an approximation different from the calculating one or more candidate motion vectors for each macroblock.03-29-2012
20120314770METHOD AND APPARATUS FOR GENERATING INTERPOLATED FRAME BETWEEN ORIGINAL FRAMES - A method and apparatus for generating an interpolated frame are provided. The method includes: generating a motion vector for generating a third frame by performing motion estimation based on first image data and second image data, the first image data being a portion of image data of a first frame and the second image data being a portion of image data of a second frame; restoring the image data of the first frame based on the first image data and the image data of the second frame based on the second image data; and generating the third frame by performing motion compensation based on at least one of the restored image data of the first frame and the restored image data of the second frame and the generated motion vector.12-13-2012
20080205524Multiple Instance Video Decoder For Macroblocks Coded in Progressive and an Interlaced Way - The present invention relates to a video decoder (DEC) for decoding a bit stream (BS) corresponding to pictures (P) of a video signal, the coded pictures being likely to include macroblocks coded in a progressive and in an interlaced way. This decoder comprises a decoding unit (DEU) for decoding macroblocks coded in a progressive way and, according to the invention, a multiple instance unit (MIU) for presenting, for each field-predicted macroblock, a motion compensation vector associated with each field, constructing as many predicted entire macroblocks as fields with each corresponding motion compensation vector, and reconstructing said field-predicted macroblock by re-interlacing fields respectively taken from each corresponding predicted entire macroblock. Use: Mobile devices08-28-2008
20100272184System and Method for Real-Time Super-Resolution - A method and system are presented for real time Super-Resolution image reconstruction. According to this technique, data indicative of a video frame sequence compressed by motion compensated compression technique is processed, and representations of one or more video objects (VOs) appearing in one or more frames of said video frame sequence are obtained. At least one of these representations is utilized as a reference representation and motion vectors, associating said representations with said at least one reference representation, are obtained from said data indicative of the video frame sequence. The representations and the motion vectors are processed, and pixel displacement maps are generated, each associating at least some pixels of one of the representations with locations on said at least one reference representation. The reference representation is re-sampled according to the sub-pixel accuracy of the displacement maps, and a re-sampled reference representation is obtained. Pixels of said representations are registered against the re-sampled reference representation according to the displacement maps, thereby providing super-resolved image of the reference representation of said one or more VOs.10-28-2010
20100272183Inter-frame prediction coding method, device and system - Inter-frame prediction coding method, device and system are provided. The inter-frame prediction coding method includes: calculating distortions between a template area of current encoding block and each of M matching templates in L reference frames, to determine M offset vectors; acquiring M hypothesis prediction values of the encoding block to which the M matching templates correspond according to the determined M offset vectors, and calculating the template matching prediction value of the current encoding block according to the M hypothesis prediction values; comparing the template matching prediction value and original value of the current encoding block to acquire the residual of the current encoding block, and encoding the residual. The technical solution improves prediction performance of the video coding system and increases coding efficiency.10-28-2010
20100272181IMAGE PROCESSING METHOD AND IMAGE INFORMATION CODING APPARATUS USING THE SAME - Disclosed herein is an image information coding method for performing a motion vector search based on hierarchical search in an image compression information device adapted to output image compression information, the image information coding method including the steps of, compressing a plurality of frame images at a predetermined compression ratio to generate a plurality of reduced screens of lower hierarchical levels, searching for a first motion vector using the plurality of reduced screens, switching between search areas in a memory in which the frame images are stored, and searching for a second motion vector using the first motion vector in the switched search area.10-28-2010
20120177120IDENTIFICATION OF SAMPLES IN A TRANSITION ZONE - During a video encoding or decoding process, a predicted prediction block is generated for a CU. The CU may have two or more prediction units (PUs). A computing device selects a neighbor region size. After the computing device selects the neighbor region size, samples in a transition zone of the prediction block are identified. Samples associated with a first PU are in the transition zone if neighbor regions that contain the samples also contain samples associated with a second PU. Samples associated with the second PU may be in the transition zone if neighbor regions that contain the samples also contain samples associated with the first PU. The neighbor regions have the selected neighbor region size. A smoothing operation is then performed on the samples in the transition zone.07-12-2012
20100027674VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination.02-04-2010
20100027662METHOD AND SYSTEM FOR DETERMINING A METRIC FOR COMPARING IMAGE BLOCKS IN MOTION COMPENSATED VIDEO CODING - Method and system for determination of a metric measuring a difference between two image blocks used in motion compensated video coding of scenes are described. Only selected pixels in a block in the scene are processed for enhancing the speed of the metric computation.02-04-2010
20100008423Method and Apparatus for Periodic Structure Handling for Motion Compensation - A motion compensated picture rate converter for determining a dominant motion vector for a block appearing in two images includes a high-pass filter and a low-pass filter, transform calculators responsive to the filters for performing transforms on at least two images to produce a frequency-domain representation of the images, estimating calculators for estimating a plurality of motion vectors based on the frequency-domain representations, and a periodic structure detection and elimination module responsive to the transform calculators and the estimating calculators for identifying a period based on the frequency-domain representation of the images and for selecting a dominant motion vector based on the estimated motion vectors and the identified period. A method of operation is also disclosed.01-14-2010
20100008422VIDEO ENCODING METHOD AND DECODING METHOD, APPARATUSES THEREFOR, PROGRAMS THEREFOR, AND STORAGE MEDIA WHICH STORE THE PROGRAMS - A video encoding method includes selecting a reference vector target frame and a reference frame from among already-encoded frames; encoding information for designating each frame; setting a reference vector for indicating an area in the reference vector target frame with respect to an encoding target area; encoding the reference vector; performing a corresponding area search by using image information of a reference vector target area, which belongs to the reference vector target frame and is indicated by the reference vector, and the reference frame; determining a reference area in the reference frame based on the search result; generating a predicted image by using image information of the reference frame, which corresponds to the reference area; and encoding differential information between image information of the encoding target area and the predicted image.01-14-2010
20120314773Drift-Free, Backwards Compatible, Layered VDR Coding - A visual dynamic range (VDR) signal and a standard dynamic range (SDR) signal are received. A first (e.g., MPEG-2) encoder encodes a base layer (BL) signal. A second encoder encodes an enhancement layer (EL). The EL signal represents information with which the VDR signal may be reconstructed, e.g., using the BL and the EL signals. The first encoder encodes the SDR signal with inverse discrete cosine transform (IDCT) coefficients that have a fixed precision, e.g., which represent fixed-point approximations of transform coefficients that may have arbitrary precisions. The BL signal is encoded in a stream that conforms with an Advanced Television Standards Committee (ATSC) standard. The EL is encoded in a stream that conforms with an ATSC enhanced vestigial sideband (E-VSB) standard. The BL and EL signals are combined; e.g., multiplexed, and transmitted together.12-13-2012
20120224632ENCODING AND DECODING OF VIDEO DATA - An embodiment of the invention relates to a method for providing a compressed video bitstream related to consecutive pictures of a video sequence, wherein the pictures are defined by pixels, said method comprising the steps of: 09-06-2012
20120224635METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING ADAPTIVE MOTION VECTOR RESOLUTION - The present disclosure relates to a method and apparatus for improving the encoding efficiency by adaptively changing the resolution of the motion vector in the inter prediction encoding and inter prediction decoding of a video. The apparatus includes: a predicted motion vector calculator for calculating a predicted motion vector of a current block to be encoded using motion vectors of one or more surrounding blocks; and a skip mode encoder for encoding a result of performing a prediction of the current block and information indicating that the current block is a skip block when the predicted motion vector satisfies a skip condition, wherein at least one motion vector among the motion vectors of the surrounding blocks and the motion vector of the current block has a resolution different from resolutions of the other motion vectors.09-06-2012
20120224634VIDEO DECODING METHOD, VIDEO CODING METHOD, VIDEO DECODING DEVICE, AND COMPUTER-READABLE RECORDING MEDIUM STORING VIDEO DECODING PROGRAM - A video decoding method of decoding coded data of a multi-view video, the method includes, determining, in a case where a decoding target block is coded in a temporal direct-mode, whether or not a block at a same position of a picture that becomes a reference of the temporal direct-mode with respect to the decoding target block has a disparity vector referring to a block of another view point. The method also includes calculating, in a case where the block at the same position has the disparity vector, a motion vector of the decoding target block by using a motion vector belonging to the block of another view point to which the disparity vector refers; and decoding the decoding target block by using the calculated motion vector.09-06-2012
20110110428Method of Storing Motion Vector Information and Video Decoding Apparatus - A video decoding apparatus includes a bitstream parser, a calculator and a memory. The bitstream parser is provided to receive a video bitstream and extracting a set of constraints associated with the video bitstream, wherein the set of constraints has information associated with a direct_8×8_inference flag for a macroblock of a picture, wherein the macroblock has N sub-macroblock partitions. The calculator is provided to calculate first motion vector information associated with the macroblock and obtain second motion vector information associated with K of the N sub-macroblock partitions from the first motion vector information according to the information associated with the direct_8×8_inference flag, wherein K is less than N. The memory is provided to store the second motion vector information.05-12-2011
20120263236IMAGE INFORMATION ENCODING METHOD AND ENCODER, AND IMAGE INFORMATION DECODING METHOD AND DECODER - An image decoding method includes decoding encoded image data to generate a decoded image signal including a luma signal and a chroma signal. The method further includes scaling, when a reference field has a different parity from a current field for motion compensation and when the decoded image signal is in a format in which the number of chroma pixels is vertically different from the number of luma pixels, a chroma motion vector of the chroma signal according to an accuracy for a luma motion vector of the luma signal so that a reference frame will coincide in phase of the chroma signal with a current frame. The method also includes performing motion compensation of the decoded image signal using the scaled chroma motion vector according to the accuracy of the luma motion vector of the luma signal.10-18-2012
20120263238VIDEO ENCODER AND VIDEO DECODER - A video encoder includes: a motion compensation picture signal generator to generate a plurality of motion compensation picture signals in accordance with an encoding target signal and a plurality of reference pictures; a prediction signal generator to generate a prediction signal of the encoding target signal by utilizing the plurality of motion compensation picture signals; a prediction error signal generator to generate a prediction error signal; a selector to select, from among a plurality of scan patterns prepared for generating encoded information from the prediction error signal, a scan pattern that is expected to minimize an information amount of an encoded state of the prediction error signal, in accordance with the plurality of motion compensation picture signals; and a zigzag scanner to generate encoded information from the prediction error signal by using the scan pattern selected by the selector.10-18-2012
20120263239METHOD AND APPARATUS FOR ESTIMATING AND COMPENSATING SPATIOTEMPORAL MOTION IMAGE - A method of estimating and compensating for motion in image decoding are provided. The method involves determining a reference block of a reference frame indicated by a motion vector of a current block of a current frame being decoded, and generating a spatiotemporal estimation block of the current block by using the current frame and the reference frame, when some pixels of the reference block are outside the reference frame.10-18-2012
20120082229SYSTEM FOR NESTED ENTROPY ENCODING - Methods and systems for improving coding efficiency of video.04-05-2012
20120082228NESTED ENTROPY ENCODING - Methods and systems for improving coding efficiency of video.04-05-2012
20120082227METHOD AND APPARATUS FOR MANAGING BIT RATE - A crawl motion vector is determined based on a speed and direction of the crawling text to be displayed in a text crawl area. A determination whether to re-encode macroblocks in the plurality of pictures is made. The macroblocks in the plurality of pictures that are to be re-encoded are either macroblocks having motion vectors pointing to the text crawl area or macroblocks within the text crawl area. A lowest bit rate coding option for each macroblock to be re-encoded is determined, and each macroblock is re-encoded using the lowest bit rate coding option for the macroblock.04-05-2012
20120328021MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding apparatus includes: a motion vector predictor candidate calculation unit which calculates one or more motion vector predictor candidates and the number of available predictor candidates; an inter prediction control unit which selects an optimum motion vector predictor candidate; and a variable length coding unit which sets the motion vector predictor candidate list size to the number of available predictor candidates, and variable-length codes a motion vector predictor index used for coding a motion vector, by assigning a bit string according to the motion vector predictor candidate list size to the index.12-27-2012
20120257678Parallel Motion Estimation in Video Coding - Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.10-11-2012
20120263235MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS AND MOVING PICTURE CODING AND DECODING APPARATUS - By the moving picture coding method and the moving picture decoding method, it is possible to improve coding efficiency. The moving picture coding apparatus includes a merge block candidate calculation unit that (i) specifies merge block candidates at merge mode, by using colpic information such as motion vectors and reference picture index values of neighbor blocks of a current block to be coded and a motion vector and the like of a collocated block of the current block which are stored in a colPic memory, and (ii) generates a combined merge block by using the merge block candidates.10-18-2012
20120328019MOVING PICTURE ENCODING DEVICE, MOVING PICTURE DECODING DEVICE, MOVING PICTURE ENCODING METHOD, MOVING PICTURE DECODING METHOD, PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM STORING PROGRAM - An object of the present invention is to express a predicted picture signal with light overheads, and to provide motion compensation of different pixel accuracy. A moving picture encoding device 12-27-2012
20120328018OPTIMIZED SEARCH FOR REFERENCE FRAMES IN PREDICTIVE VIDEO CODING SYSTEM - A system and method for efficiently performing motion estimation during temporal prediction for coding. When a new frame is presented for coding, an encoder may identify a limited number of pixel blocks within the input frame that are complex. The encoder may perform motion estimation searches to find reference frame(s) that are adequate prediction references for the complex pixel blocks. The encoder may search for prediction references for the remaining pixel blocks of the new frame, confining the search to the reference frame(s) that were selected as prediction references of the complex pixel blocks.12-27-2012
20120328016Method and Device for Adapting the Throughput of a Compressed Video Stream Transmitted in a Constrained Environment - A method is provided for adapting the throughput of a video stream comprising a plurality N of compressed images with a plurality of spatial resolutions and/or a plurality of quality layers, the images being compressed separately from one another.12-27-2012
20120328017VIDEO DECODER AND VIDEO DECODING METHOD - According to one embodiment, a video decoder includes a detector and an interpolation module. The detector is configured to detect an error in a macroblock contained in stream data including multiview video images. The interpolation module is configured to perform interpolation on a slice including an error-detected macroblock. If the slice is to be decoded with reference to a picture of a same view, the interpolation module performs interpolation on the slice by using a macroblock included in the picture in the same view. If the slice is to be decoded with reference to a picture of a different view, the interpolation module performs interpolation on the slice by using a macroblock comprised in the picture of the different view.12-27-2012
20120230411Method and Apparatus of Transform Unit Partition with Reduced Complexity - Three block concepts are introduced in HEVC: coding unit (CU), prediction unit (PU), and transform unit (TU). The overall coding structure is characterized by the various sizes of CU, PU and TU in a recursive fashion. For transform processing in current HEVC, a hierarchy RQT (Residual Quad Tree) is used and the TU size is related to the CU size, but independent of the PU size. This results in high encoding complexity and also causes increased processing time to process the syntax of residual quad tree. Accordingly a modified transform unit partition with reduced complexity is disclosed. According to an embodiment, the TU size may be restricted to the minimum of PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In another embodiment, the maximum TU size equals to maximum of PU width and height, and the minimum TU size equals to minimum of the PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In yet another embodiment, the TU size is selected between 2N×2N and N×N for the 2N×2N, 2N×N, N×2N and N×N partition types. The syntax element, split_transform_flag, is used to indicate the selection of 2N×2N or N×N TU size when needed. Furthermore, a method with reduced complexity of selecting the best merge candidate for the 2N×2N CU merge mode is disclosed. The method relies on R-D cost associated with the motion vector of merge candidate to reduce required computation.09-13-2012
20120230412MULTI-VIEW VIDEO CODING METHOD - In a multi-view video coding method using a hierarchical B-picture (HBP) prediction structure, multiple image sequences in the HBP prediction structure are grouped into main-view image sequences, and auxiliary-view image sequences, each of which is configured to be disposed between corresponding two adjacent main-view image sequences. Each picture to be encoded in each main-view image sequence serves as a first target picture, and is divided into multiple macroblocks. Video data in each macroblock of the first target picture is encoded based on a first reference macroblock unit in accordance with first decision criteria. Each picture to be encoded in each auxiliary-view image sequence serves as a second target picture, and is divided into multiple macroblocks. Video data in each macroblock of the second target picture is encoded based on a second reference macroblock unit in accordance with second decision criteria.09-13-2012
20120230410MULTI-FORMAT VIDEO DECODER AND METHODS FOR USE THEREWITH - A multi-format video decoder includes an entropy decoding device that generates entropy decoded (EDC) data from an encoded video signal. A multi-format video decoding device includes a memory module that stores format configuration data corresponding to a plurality of video coding formats. A plurality of vector processor units generate a decoded video signal from the EDC data, wherein the plurality of vector processing units are configured, based on the configuration data, to a selected one of the plurality of video coding formats.09-13-2012
20080285649Method and Apparatus for Encoding a Picture Sequence Using Predicted and Non-Predicted Pictures Which Each Include Multiple Macroblocks - In MPEG, most video frames are encoded in inter mode. Every now and than a video frame is encoded in intra mode in order to limit error propagation and to enable access points for starting decoding of the video sequence. According to the invention, however, it is sufficient to encode in an intra frame only those pixel blocks in intra mode of which at least one pixel is used for predicting some future picture content information, whereas the other blocks can be encoded in inter mode. In order to check which blocks in the intra frame can be encoded in inter mode, a motion compensation pre-analysis of the following P-frame is performed, in order to find those blocks that need not be encoded in intra mode because no pixel in such blocks is used for the prediction of that following P-picture.11-20-2008
20120230413INTERPOLATION FILTER SELECTION USING PREDICTION UNIT (PU) SIZE - In one embodiment, a method for encoding or decoding video content is provided. The method includes determining a set of interpolation filters for use in interpolating sub-pel pixel values and a mapping between interpolation filters in the set of interpolation filters and different sizes of prediction units (PUs) of video content. A PU of video content is received and a size of the received PU is determined The method determines an interpolation filter in the set of interpolation filters based on a mapping between the interpolation filter and the size of the received PU to interpolate a sub-pel pixel value for use in a temporal prediction process for the PU.09-13-2012
20110122953IMAGE PROCESSING APPARATUS AND METHOD - The present invention relates to an image processing apparatus and method that allow the generation of a high-accuracy prediction image without increasing the processing load.05-26-2011
20110122952MOTION ESTIMATION DEVICE - A motion estimation device configured to estimate motion for blocks included in an input picture using a reference picture includes an internal reference memory configured to store the reference picture transferred from outside the motion estimation device; a motion estimator configured to estimate motion information for a target block that is a block of the input picture and where motion is to be estimated, using pixel data of the reference picture stored in the internal reference memory; a motion compensator configured to perform motion compensation for the target block using the motion information estimated by the motion estimator; and a reference memory manager configured to control the internal reference memory. The reference memory manager is configured to control the internal reference memory to store a luminance reference picture and a color-difference reference picture as the reference picture.05-26-2011
20110122951VIDEO SIGNAL PROCESSING APPARATUS AND VIDEO SIGNAL PROCESSING METHOD - A frame rate conversion apparatus compares a first frame image and a second frame image, detects a motion vector for each of blocks obtained by dividing a frame image into blocks, detects a scroll vector which indicates a uniform motion in an entire frame image based on the detected motion vector, and determines whether frame interpolation using the scroll vector is possible or not for each block in the first frame image, based on a correlation value in block matching of the block in the first frame image with an area obtained by shifting the block in the second frame image by an amount of the scroll vector, and a correlation value in block matching of the block in the first frame image with an area obtained by shifting the block in the second frame image by an amount of the motion vector.05-26-2011
20110122950VIDEO DECODER AND METHOD FOR MOTION COMPENSATION FOR OUT-OF-BOUNDARY PIXELS - Methods and systems for decoding motion compensated video. In the decoding process a virtual predicted block is defined within memory to hold the pixel values of a reference block used in motion compensation with respect to a macroblock being reconstructed. If the reference block includes out-of-boundary pixels from the reference frame, the corresponding pixels within the virtual predicted block are padded using the boundary values of the reference frame. This avoids the need to pad the entire reference frame.05-26-2011
20100183075IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS AND COMPUTER READABLE STORAGE MEDIUM - An image processing method includes: a frame selection step; a motion vector calculation step for calculating a motion vector value from one frame image to another frame image by tracking each pixel of one or a plurality of frame images; and a motion vector correction step for calculating an imaginary motion vector when a motion vector that can be tracked to a tracking destination pixel corresponding to a pixel tracked up to a midway point does not exist due to an encoding type of a block including the pixel tracked up to the midway point.07-22-2010
20110002391DIGITAL IMAGE COMPRESSION BY RESOLUTION-ADAPTIVE MACROBLOCK CODING - Disclosed is an image encoder that divides a digital image into a set of “macroblocks.” If appropriate, a macroblock is “downsampled” to a lower resolution. The lower-resolution macroblock is then encoded by applying spatial (and possibly temporal) prediction. The “residual” of the macroblock is calculated as the difference between the predicted and actual contents of the macroblock. The low-resolution residual is then either transmitted to an image decoder or stored for later use. In some embodiments, the encoder calculates the rate-distortion costs of encoding the original-resolution macroblock and the lower-resolution macroblock and then only encodes the lower-resolution macroblock if its cost is lower. When a decoder receives a lower-resolution residual, it recovers the lower-resolution macroblock using standard prediction techniques. Then, the macroblock is “upsampled” to its original resolution by interpolating the values left out by the encoder. The macroblocks are then joined to form the original digital image.01-06-2011
20110002389METHODS AND SYSTEMS TO ESTIMATE MOTION BASED ON RECONSTRUCTED REFERENCE FRAMES AT A VIDEO DECODER - Methods and systems to apply motion estimation (ME) based on reconstructed reference pictures in a B frame or in a P frame at a video decoder. For a P frame, projective ME may be performed to obtain a motion vector (MV) for a current input block. In a B frame, both projective ME and mirror ME may be performed to obtain an MV for the current input block. The ME process can be performed on sub-partitions of the input block, which may reduce the prediction error without increasing the amount of MV information in the bitstream. Decoder-side ME can be applied for the prediction of existing inter frame coding modes, and traditional ME or the decoder-side ME can be adaptively selected to predict a coding mode based on a rate distribution optimization (RDO) criterion.01-06-2011
20120263237VIDEO ENCODER AND VIDEO DECODER - A video encoder includes: a motion compensation signal generator to generate a plurality of motion compensation signals in accordance with an encoding target signal and a plurality of reference pictures; a prediction signal generator to generate a prediction signal of the encoding target signal by utilizing the plurality of motion compensation signals; a prediction error signal generator to generate a prediction error signal; a selector to select, from among a plurality of generation rules for generating encoded information of the prediction error signal, a generation rule that is expected to reduce an information amount of an encoded state of the prediction error signal, in accordance with the plurality of motion compensation signals; and an encoded information generator to generate encoded information of the prediction error signal in accordance with the generation rule selected by the selector.10-18-2012
20110007810RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Image decoding method including: receiving an encoded bitstream including information of I and P frames; and executing motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and a previously-decoded reference image. The motion compensation includes calculating intensity values at points where no pixels actually exist by bilinear interpolation performable using a positive rounding method and a negative rounding method; wherein the bilinear interpolation is performed using the rounding method specified by rounding method information included in the encoded bitstream of the current frame when the current frame is a P frame; wherein the rounding method information is included in a header section of the coded information of the current frame; and wherein the rounding method information is not received from the encoded bitstream of the current frame when the current frame is an I frame.01-13-2011
20120269273IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD AND PROGRAM - An image processing device is provided that includes an image acquisition unit that obtains video data that includes a plurality of consecutive frames, and also obtains image data that correspond to some of the frames and have a higher spatial resolution than the frames. The image processing device also includes a super resolution processing unit that uses a plurality of the frames to perform super resolution processing on the frames, and that generates super resolution images that correspond to the frames. The image processing device further includes a motion estimation unit that uses the video data to detect a motion vector between the super resolution images and an image generation unit that, based on the super resolution images corresponding to the image data and on the motion vector, generates motion compensated image data that corresponds to the frames.10-25-2012
20120269272METHOD AND DEVICE FOR PROCESSING A VIDEO SEQUENCE - An embodiment of the invention relates to a method for processing the pixel amplitude of at least one block image pixel contained in a video sequence, said method comprising the steps of: —constructing an individual motion trajectory comprising motion-shifted versions of said block image pixel over a multiplicity of neighboring frames; and—combining the pixel amplitudes of the motion-shifted versions of said block image pixel along the individual motion trajectory using a weighting function, to form a processed pixel amplitude of said image pixel.10-25-2012
20110235717NONLINEAR, PREDICTION FILTER FOR HYBRID VIDEO COMPRESSION - A method and apparatus for non-linear prediction filtering are disclosed. In one embodiment, the method comprises performing motion compensation to generate a motion compensated prediction using a block from a previously coded frame, performing non-linear filtering on the motion compensated prediction in the transform domain with a non-linear filter as part of a fractional interpolation process to generate a motion compensated non-linear prediction, subtracting the motion compensated non-linear prediction from a block in a current frame to produce a residual frame, and coding the residual frame.09-29-2011
20110235716DECODING APPARATUS, DECODING METHOD, PROGRAM AND INTEGRATED CIRCUIT - A decoding apparatus (09-29-2011
20110235715VIDEO CODING SYSTEM AND CIRCUIT EMPHASIZING VISUAL PERCEPTION - A video coding system and circuit emphasizing visual perception are presented, which mainly include a video coding module and a video analysis module. A video frame is respectively input into the video coding module and the video analysis module. The video coding module performs a coding process on the input video frame, the video analysis module analyzes the input video frame to generate a quantization parameter adjustment value, and then the video coding module adjusts each coding parameter with the quantization parameter adjustment value. In this manner, a more efficient compression can be performed on the video frame, and the compressed video frame still maintains good image quality.09-29-2011
20110235713METHOD FOR ADAPTIVELY PERFORMING VIDEO DECODING, AND ASSOCIATED ADAPTIVE COMPLEXITY VIDEO DECODER AND ADAPTIVE AUDIO/VIDEO PLAYBACK SYSTEM - A method for adaptively performing video decoding includes: performing decoding complexity management based upon bit stream information of an input bit stream, in order to determine whether to reduce decoding complexity of at least one component of a plurality of components within an adaptive complexity video decoder; and selectively reducing decoding complexity of a portion of components within the adaptive complexity video decoder. An associated adaptive complexity video decoder and an associated adaptive audio/video playback system are also provided. In particular, the adaptive complexity video decoder includes a plurality of components and a decoding complexity manager. When needed, the decoding complexity manager delays audio playback of audio information.09-29-2011
20110235712LOW COMPLEXITY VIDEO DECODER - A low complexity video decoder includes: a fast variable length decoding (VLD) and inverse quantization module arranged to perform fast VLD and inverse quantization on an input bit stream to generate inverse quantization results; an inverse transform unit arranged to perform inverse transform on the inverse quantization results to generate inverse transform results; a motion compensation module arranged to perform motion compensation according to the input bit stream and generate associated prediction outputs, wherein the motion compensation module includes a temporal/spatial prediction unit arranged to perform temporal/spatial prediction to generate at least a portion of the prediction outputs; an arithmetic unit arranged to sum up the inverse transform results and the prediction outputs to generate compensated outputs; a reconstructed frame output unit arranged to generate reconstructed frames according to the compensated outputs; and a frame storage arranged to store some reconstructed frames.09-29-2011
20100232512VIDEO ENCODING/DECODING METHOD AND APPARATUS FOR MOTION COMPENSATION PREDICTION - A video encoding method and apparatus to select one combination, for each block of an input video signal, from a plurality of combinations. Each combination includes a predictive parameter and at least one reference picture number determined in advance for the reference picture. A prediction picture signal is generated in accordance with the reference picture number and predictive parameter of the selected combination. A predictive error signal is generated representing an error between the input video signal and the prediction picture signal. Encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination is included.09-16-2010
20100232511MOTION COMPENSATOR, MOTION COMPENSATING METHOD, AND MOTION-COMPENSATED VIDEO DECODER IMPLEMENTING THE SAME - A motion compensating method for a motion-compensated video decoder, the motion compensated video decoder having an entropy decoder for generation of MV information and MB modes, the motion compensating method includes selectively combining adjacent partitions within a macroblock in response to the MV information, and update the MV information and MB modes in response to the combination, and creating a predicted macroblock in response to the most updated MV information and MB modes.09-16-2010
20100232510METHOD AND APPARATUS FOR ENCODING MULTIVIEW VIDEO USING HIERARCHICAL B FRAMES IN VIEW DIRECTION, AND A STORAGE MEDIUM USING THE SAME - The invention provides a method of encoding a multi-view video and an encoder capable of calculating global disparity between pictures at different viewpoints in the multi-view video and forming a hierarchical B picture in both view and time directions on the basis of the calculated global disparity, thereby improving encoding efficiency. According to an embodiment of the invention, there is provided an encoder for encoding data for pictures captured at different viewpoints in a multi-view video. When a picture at one of the first and last viewpoints is encoded into an I picture, the encoder encodes a picture that is captured at the other viewpoint but is disposed in the same time direction into an VP picture.09-16-2010
20100232509METHOD AND APPARATUS TO IMPROVE THE CONVERGENCE SPEED OF A RECURSIVE MOTION ESTIMATOR - A method and apparatus for motion estimation of at least a first and a second image frame by estimating at least one motion vector correlating a portion of pixels of the at least first and second image frame, the first and second image frame being part of an image frame sequence. The at least one motion vector is obtained by a predominant motion detection generating at least one global motion vector based on at least one previously determined motion vector, the previously determined motion vector correlating a portion of pixels of earlier image frames of the image frame sequence, and an estimation estimating the at least one motion vector based on the at least one global motion vector.09-16-2010
20100232508CODING METHOD OF REDUCING INTERLAYER REDUNDANCY USING MITION DATA OF FGS LAYER AND DEVICE THEREOF - Provided is a scalable video coding method and apparatus. Motion data of a high-quality fine grain scalability (FGS) layer is used for interlayer coding in order to remove redundancy between coarse grain scalability (CGS) layers or layers having different spatial resolutions, and information indicating that data of the FGS layer has been used for interlayer motion prediction is inserted for Moving Picture Expert Group (MPEG)-4 scalable video encoding. A bitstream extractor checks the information and performs extraction to maintain the data of the FGS layer. MPEG-4 scalable video decoding is performed using the information. By using the FGS layer, interlayer redundancy can be efficiently removed, thereby improving encoding efficiency.09-16-2010
20100232507METHOD AND APPARATUS FOR ENCODING AND DECODING THE COMPENSATED ILLUMINATION CHANGE - A method of and apparatus for encoding and decoding a signal by illumination change compensated motion estimation are provided. The apparatus for encoding a signal by illumination change compensated motion estimation includes: an illumination change compensation unit performing compensation for an illumination change by performing a differential calculation between each pixel value of a current block and the means pixel value of a reference block indicated by a motion vector of the current block and the mean pixel value of the reference block; a residual signals generation unit generating residual signals based on the blocks in which illumination change compensation is performed; and an illumination changed amount prediction unit performing differential pulse code modulation (DPCM) based on the illumination change amount prediction value by reflecting the closeness between neighboring blocks in which illumination change occurs.09-16-2010
20100232505Process for Coding Images Using Intra Prediction Mode - The process implements an intra prediction mode which comprises: 09-16-2010
20100232506METHOD FOR HANDLING LOCAL BRIGHTNESS VARIATIONS IN VIDEO - There is provided a compression method for handling local brightness variation in video. The compression method estimates the weights from previously encoded and reconstructed neighboring pixels of the current block in the source picture and their corresponding motion predicted (or collocated) pixels in the reference pictures. Since the information is available in both the encoder and decoder for deriving these weights, no additional bits are required to be transmitted.09-16-2010
20090135909MOTION COMPENSATION METHOD AND INTEGRATED CIRCUIT UTILIZING THE SAME - An integrated circuit capable of motion compensation and a method thereof is disclosed. The integrated circuit comprises a partition unit and a motion compensation unit. The partition unit receives a video block having a predetermined block dimension, and partitions the video block into sub-blocks with a sub-block dimension less than the predetermined block dimension when the video block is on a frame boundary of a video frame. The motion compensation unit, coupled to the partition unit, performs motion compensation on the sub-blocks.05-28-2009
20110243238METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20110243236METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING WITH REDUCED REQUIREMENTS FOR DIVISION OPERATIONS - A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.10-06-2011
20110249742COUPLED VIDEO PRE-PROCESSOR AND CODEC INCLUDING REFERENCE PICTURE FILTER THAT MINIMIZES CODING EXPENSE DURING PRE-PROCESSING MODE TRANSITIONS - A video coding system includes a coding engine operable to code source video according to motion compensated prediction techniques, a reference picture cache to store decoded picture data of previously-coded reference pictures, and a programmable filter to apply selected filtering operation(s) to picture data retrieved from the reference picture cache and provided to the coding engine. A video decoding system includes a decoding engine operable to decode coded video data, a reference picture cache to store decoded picture data of previously-decoded reference pictures, and a programmable filter to apply a filtering operation to picture data retrieved from the reference picture cache and provided to the decoding engine as determined by the coded video data. Video coding/decoding systems so configured may avoid coding costs that can be incurred when a pre-processing filter switches pre-processing modes within source data in a manner that causes divergence between stored reference pictures and video pictures input to the coding engine.10-13-2011
20120087413VIDEO DECODING DEVICE, VIDEO DECODING METHOD, VIDEO DECODING PROGRAM, AND VIDEO DECODING INTEGRATED CIRCUIT - With use of a simplified program or calculating device for motion compensation, a video decoding device decodes video data compressed by motion detection operations on macroblock units, as in the MPEG-4AVC standard. The video decoding device splits compressed data blocks of the prescribed size, 16×16 pixels for instance, to generate sub-blocks, which are smaller than the blocks and on which the video decoding device is able to execute motion compensation operations. The video decoding device duplicates a motion vector assigned to a given block to generate as many motion vectors as there are sub-blocks in the given block, and executes motion compensation on each sub-block using the corresponding duplicate motion vector. Data resulting from the motion compensation operation on each sub-block is combined to obtain a target block corresponding to the given block.04-12-2012
20120087412Method for Determining Boundary Strength - A method for determining the boundary strengths of edges in a block-based digitally encoded image is disclosed. The method includes setting the boundary strength of two adjacent blocks in an Inter macroblock to a first strength value if any one of the two adjacent blocks contains non-zero prediction residual in the encoding data and setting the boundary strength thereof to a second strength value if the two adjacent blocks are located in the same motion compensation block. An edge with boundary strength equal to the second strength value will be skipped in a deblocking process.04-12-2012
20120087411INTERNAL BIT DEPTH INCREASE IN DEBLOCKING FILTERS AND ORDERED DITHER - A dither processing system processes pixel data having an integer component and a fractional component. The system may parse picture data into a plurality of blocks having a size corresponding to a dither matrix. Fractional components of each pixel may be compared to a corresponding dither value from the dither matrix. Based on the comparison, the processing system may determine whether or not to increment the integer components of the respective pixels. By performing such comparisons on a pixel-by-pixel basis, it is expected that this dithering will be more effective than this other dither processing.04-12-2012
20120328024MOTION VECTOR CALCULATION METHOD - When a block (MB12-27-2012
20120320986MOTION VECTOR ESTIMATION METHOD, MULTIVIEW VIDEO ENCODING METHOD, MULTIVIEW VIDEO DECODING METHOD, MOTION VECTOR ESTIMATION APPARATUS, MULTIVIEW VIDEO ENCODING APPARATUS, MULTIVIEW VIDEO DECODING APPARATUS, MOTION VECTOR ESTIMATION PROGRAM, MULTIVIEW VIDEO ENCODING PROGRAM, AND MULTIVIEW VIDEO DECODING PROGRAM - Efficient multiview video encoding is realized even in a situation in which a processing picture cannot be obtained, by accurately estimating a motion vector and simultaneously using an inter-camera correlation and a temporal correlation in prediction of a video signal. A view synthesized picture at a time when a processing picture has been taken is generated from a reference camera video that has been taken by a camera different from a processing camera that has taken the processing picture included in a multiview video based on the same setting as that of the processing camera. A motion vector is estimated by searching for a corresponding region in a reference picture taken by the processing camera using a picture signal on the view synthesized picture corresponding to a processing region on the processing picture without using the processing picture.12-20-2012
20120320987ENHANCING FRACTIONAL PIXEL MOTION PREDICTION USING A PLURALITY OF FILTERS - A system, apparatus, and method for encoding a video signal having at least one frame with a plurality of blocks. The method includes determining, for a first block in the at least one frame, a motion vector that describes a spatial relationship between the first block and a second block within a previously encoded frame that is similar to the first block, determining a complexity value representative of a complexity of the second block; determining a length value representative of a length of the motion vector; selecting a filter from a plurality of filters based on at least one of the length value or the complexity value wherein the plurality of filters includes at least a bicubic filter and a bilinear filter; and applying the selected filter to at least a portion of the previously encoded frame to derive a predictor block.12-20-2012
20120320984Inter-Prediction Candidate Index Coding Independent of Inter-Prediction Candidate List Construction in Video Coding - Methods are provided for inter-prediction candidate index coding independent of the construction of the corresponding inter-prediction candidate list, i.e., a merging candidate list or an advanced motion vector predictor list. A maximum allowed number of inter-prediction candidates for an inter-prediction candidate list is used for encoding the inter-prediction candidate index in an encoded bit stream. The maximum allowed number may be pre-determined or may be selected by the encoder and encoded in the bit stream. A decoder may then decode the index using the maximum allowed number of inter-prediction candidates independent of the construction of the corresponding inter-prediction candidate list.12-20-2012
20120320985MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMS THEREOF - In a moving picture encoding apparatus, a primary candidate reference motion vector-setting unit sets N primary candidate reference motion vectors. A degree of reliability calculation unit calculates the reliability of each primary candidate reference motion vector, which represents effectiveness in predicting a motion vector of a block to be decoded, using coded or decoded image information. A reference motion vector determination unit selects secondary candidate reference motion vectors with reliability higher than a predetermined threshold value from the N primary candidate reference motion vectors. A motion vector prediction unit creates a predictive motion vector of a block to be coded using M (M12-20-2012
20120320982METHOD FOR CODING AND METHOD FOR RECONSTRUCTION OF A BLOCK OF AN IMAGE - A method for decoding a stream of coded data to reconstruct a current block of a sequence of images is disclosed. The method comprises the steps of: 12-20-2012
20120320981VIDEO DECODING APPARATUS, VIDEO CODING APPARATUS, VIDEO DECODING METHOD, VIDEO CODING METHOD, AND STORAGE MEDIUM - A video decoding apparatus includes a reference picture list storing unit configured to store picture information of pictures; a motion vector information storing unit configured to store motion vector information including motion vectors of blocks that are spatially and temporally adjacent to a target block to be decoded and reference picture identifiers indicating pictures that the motion vectors refer to; and a vector predictor generating unit configured to scale a vector predictor candidate for a motion vector of the target block based on the picture information and the motion vector information and to correct the scaled vector predictor candidate toward 0 by a predetermined amount.12-20-2012
20120320980VIDEO DECODING APPARATUS, VIDEO CODING APPARATUS, VIDEO DECODING METHOD, VIDEO CODING METHOD, AND STORAGE MEDIUM - A video decoding apparatus includes a motion vector information storing unit configured to store motion vectors of blocks in previously-decoded pictures and a temporally-adjacent vector predictor generating unit. The temporally-adjacent vector predictor generating unit includes a block determining unit configured to determine multiple blocks in a picture that is temporally adjacent to a picture including a target block to be processed, the determined blocks including a block that is closest to first coordinates in the target block; a vector selecting unit configured to obtain motion vectors of the determined blocks from the motion vector information storing unit and select at least one motion vector from the obtained motion vectors; and a generating unit configured to generate a vector predictor candidate, which is used for a decoding process of the target block, based on the selected motion vector.12-20-2012
20120320983METHODS AND APPARATUS FOR REDUCED COMPLEXITY TEMPLATE MATCHING PREDICTION FOR VIDEO ENCODING AND DECODING - There are provided methods and apparatus for reduced complexity template matching prediction for video encoding and decoding. The encoding method encodes at least an image block in a picture using template matching prediction, wherein the template matching prediction is selectably constrained using one or more constraining criterion that reduces a complexity of performing the template matching prediction.12-20-2012
20100215105MOTION SEARCH APPARATUS IN VIDEO CODING - In motion search using a PE array, a technique is provided for enabling high-speed calculation while avoiding bank conflict without increasing a memory for storing pixels outside the screen. When pieces of pixel data of a plurality of lines to be read from the memory 08-26-2010
20120328025VIDEO/IMAGE PROCESSING APPARATUS WITH MOTION ESTIMATION SHARING, AND RELATED METHOD AND MACHINE READABLE MEDIUM - A video/image processing apparatus includes a storage module, a motion estimation module, and a plurality of video/image processing blocks. The storage module is arranged for storing a plurality of images. The motion estimation module is coupled to the storage module, and arranged for retrieving the images from the storage module, and generating motion vectors according to the images. The video/image processing blocks are coupled to the motion estimation module, and arranged for performing a plurality of different video/image processing operations, respectively, wherein each of the video/image processing blocks receives the motion vectors generated from the motion estimation module, and refers to the received motion vectors to perform a designated video/image processing operation. By way of example, the video/image processing operations may include frame rate conversion, video decoding, noise reduction, deinterlacing, super resolution processing, video stabilization, multi-frame image noise reduction, camera stabilization, high dynamic range (HDR) processing, and/or rolling-shutter reduction.12-27-2012
20120328020FRACTIONAL PIXEL INTERPOLATION FILTER FOR VIDEO COMPRESSION - In one embodiment, a method for encoding or decoding video content is provided. The method includes receiving a plurality of full-pel pixel values. A set of coefficients is determined for an interpolation filter to interpolate a sub-pel pixel value for a motion compensation operation. Different coefficients are assigned to weight the plurality of full-pel pixel values in different operations in the interpolation filter. The sub-pel pixel values from the different operations are determined. Then, the method outputs the interpolated sub-pel pixel value for use in the motion compensation operation.12-27-2012
20120328023VIDEO ENCODING AND DECODING USING REFERENCE PICTURES - In the encoding of video data, a list of references pictures is constructed to be used in decoding. Prediction (direction) modes are defined by n-tuples (x12-27-2012
20120328022IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes coding a motion vector difference indicating a difference between the motion vector and a predicted motion vector, wherein the coding includes: coding a first portion that is a part of a first component which is one of a horizontal component and a vertical component of the motion vector difference; coding a second portion that is a part of a second component which is different from the first component and is the other one of the horizontal component and the vertical component; coding a third portion that is a part of the first component and is different from the first portion; coding a fourth portion that is a part of the second component and is different from the second portion; and generating a code string which includes the first portion, the second portion, the third portion, and the fourth portion in the stated order.12-27-2012
20120288003VIDEO CODING USING COMPRESSIVE SENSING - Methods and apparatus are provided for video encoders and decoders using compressive sensing. The encoding method encodes an image block in a picture by generating a measurement vector for the image block, encoding the measurement vector, and reconstructing the image block by minimizing a signal sparsity of the image block responsive to the encoded measurement vector, the measurement vector including transform coefficients relating to the image block. A corresponding decoding method decodes an image block for a picture by receiving a measurement vector for the image block, decoding the measurement vector, and reconstructing the image block by minimizing a signal sparsity of the image block responsive to the decoded measurement vector, wherein the measurement vector includes transform coefficients relating to the image block.11-15-2012
20100226434METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BY USING SUB-PIXEL-BASED MOTION PREDICTION - Provided are a method and apparatus for encoding an image by using sub-pixel-based motion prediction and a method and apparatus for decoding an image by using sub-pixel-based motion prediction. The method of encoding an image includes determining weights for respective low-precision sub-pixels for interpolation between the low-precision sub-pixels, determining an interpolation direction for the low-precision sub-pixels based on a position of a high-precision sub-pixel between the low-precision sub-pixels, and performing motion prediction in units of high-precision sub-pixels determined by interpolation which applies the interpolation direction and the weights to the low-precision sub-pixels.09-09-2010
20100215104Method and System for Motion Estimation - A method of motion vector estimation for video encoding is provided that includes estimating a global motion vector for a sequence of macroblocks in a frame and estimating a motion vector for each macroblock in the sequence of macroblocks using the global motion vector to offset reference data for each macroblock.08-26-2010
20120134418FLEXIBLE MACROBLOCK ORDERING AND ARBITRARY SLICE ORDERING APPARATUS, SYSTEM, AND METHOD - A system, apparatus, method, and article to process a flexible macroblock ordering and arbitrary slice ordering are described. The apparatus may include a video decoder. The video decoder includes a processor to store coding parameters of one or more neighboring macroblocks in a data buffer. The neighboring macroblocks are previously decoded macroblocks and are adjacent to a current macroblock. The processor is to store control parameters for each of the one or more neighboring macroblocks in the data buffer. The processor is to reconstruct coding parameters for the current macroblock using availability information associated with the neighboring macroblocks.05-31-2012
20100202539MOTION VECTOR CALCULATION METHOD - When a block (MB08-12-2010
20100202532MULTI-FRAME MOTION EXTRAPOLATION FROM A COMPRESSED VIDEO SOURCE - Motion vectors are important to many video signal processing techniques that are applied to video data streams such as MPEG 2 compliant video data streams. The performance of these techniques can often be improved if larger numbers of motion vectors are available. Two techniques are disclosed that may be used to derive a significant number of additional motion vectors from the original motion vectors that exist in an encoded video data stream. A motion vector reversal technique derives new motion vectors representing motion in directions opposite to that represented by original motion vectors. A vector tracing technique derives new motion vectors from combinations of original motion vectors.08-12-2010
20100202531FAST SUB-PIXEL MOTION ESTIMATION - Embodiments of the invention are directed to a system and method for sub-pixel motion estimation for video encoding. The method includes providing a best match between a source frame and a reference frame by generating a plurality of non linear building surfaces, generating, in real time, an estimated matching criteria surface representing a matching criteria between the source frame and the reference frame based on the building surfaces and a plurality of sample points of an actual matching criteria surface and selecting, in real time, a position on the estimated matching criteria surface.08-12-2010
20130010869IMAGE CODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING METHOD, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method for coding an image on a block-by-block basis to generate a bitstream includes: deriving, as a first merging candidate, a merging candidate which is a combination of a prediction direction, a motion vector, and a reference picture index for use in coding of the current block; deriving, as a second merging candidate, a merging candidate having a motion vector which is a predetermined vector; selecting a merging candidate to be used for the coding of the current block from the derived first merging candidate and the derived second merging candidate; and attaching an index for identifying the selected merging candidate to the bitstream.01-10-2013
20130010875CODING DEVICE AND METHOD, DECODING DEVICE AND METHOD, RECORDING MEDIUM, AND PROGRAM - An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.01-10-2013
20130016785SPATIAL BLOCK MERGE MODE - In one embodiment, a spatial merge mode for a block of video content may be used in merging motion parameters. Spatial merge parameters are considered and do not require utilization of bits or flags or indexing to signal at the encoder or decoder. If the spatial merge mode is determined, the method merges the block of video content with a spatially-located block, where merging shares motion parameters between the spatially-located block and the block of video content.01-17-2013
20130016788METHOD OF DECODING MOVING PICTURE IN INTER PREDICTION MODE - Provided is a method that generates a prediction block of a current prediction unit, and generates a residual block of the current prediction unit. To generate the prediction block, a reference picture index and motion vector difference of the current prediction unit are obtained from a received bit stream, spatial and temporal motion vector candidates are derived to construct a motion vector candidate list. A motion vector predictor is selected and a motion vector of the current prediction unit is restored to generate the prediction block. Therefore, the motion vector encoded effectively using spatial and temporal candidates is correctly recovered and the complexity of a decoder is reduced.01-17-2013
20130016784METHOD AND DEVICE FOR PROCESSING PIXELS CONTAINED IN A VIDEO SEQUENCEAANM Sikora; ThomasAACI BerlinAACO DEAAGP Sikora; Thomas Berlin DEAANM Krutz; AndreasAACI BerlinAACO DEAAGP Krutz; Andreas Berlin DEAANM Glantz; AlexanderAACI BerlinAACO DEAAGP Glantz; Alexander Berlin DE - The present invention inter alia relates to a method for processing the pixel value of at least one image pixel contained in a current frame of a video sequence, said method comprising the steps of constructing an individual motion trajectory comprising motion-shifted versions of the at least one image pixel over a plurality of preceding and/or subsequent frames, and processing the pixel value based on the individual motion trajectory, wherein said step of constructing said individual motion trajectory comprises the steps of: 01-17-2013
20130016786VIDEO DECODER FOR TILES - A system for decoding a video bitstream includes receiving a frame of the video that includes at least one slice and at least one tile and where each of the at least one slice and the at least one tile are not all aligned with one another. Each of the at least one tile is characterized that it is decoded independently of the other the at least one tile including intra-prediction information, motion information. The system receives a set of data from a set of largest coding unit of at least two of the tiles and decoding the largest coding units in a selected manner depending upon a flag in the bitstream. The flag indicates that the decoding is to be performed in a raster scan order within a tile or the decoding is to be performed in a raster scan order across at least two tiles.01-17-2013
20130016787Fast Motion Estimation For Hierarchical Coding Structures - A method for motion estimation is provided that includes determining a first motion vector for a first child coding unit (CU) of a parent CU and a second motion vector for a second child CU of the parent CU, wherein the first child CU, the second child CU, and the parent CU are in a CU hierarchy, wherein the first and second child CUs are smallest size CUs in the CU hierarchy, and wherein a first motion search type is used to determine the first motion vector and the second motion vector, selecting the first and second motion vectors as candidate predictors for the parent CU, selecting a predictor for a prediction unit (PU) of the first parent CU from the candidate predictors, and refining the predictor using a second motion search type to determine a motion vector for the PU.01-17-2013
20130022119BUFFERING PREDICTION DATA IN VIDEO CODING - In an example, aspects of this disclosure relate to a method of coding video data that generally includes determining prediction information for a block of video data, where the block is included in a coded unit of video data and positioned below a top row of above-neighboring blocks in the coded unit, and where the prediction information for the block is based on prediction information from one or more other blocks in the coded unit but not based on prediction information from any of the top row of blocks in the coded unit. The method also generally includes coding the block based on the determined prediction information.01-24-2013
20130022120METHODS AND SYSTEMS FOR CHROMA RESIDUAL DATA PREDICTION - Several methods and systems for chroma residual data prediction for encoding blocks corresponding to video data are disclosed. In an embodiment, at least one coefficient correlating reconstructed luma residual samples and corresponding reconstructed chroma residual samples is computed for one or more encoded blocks of video data. Predicted chroma residual samples are generated for encoding a block of video data based on corresponding reconstructed luma residual samples and the at least one coefficient.01-24-2013
20130022122METHOD OF ENCODING MOVING PICTURE IN INTER PREDICTION MODE - Provided is a method that determines a reference picture index and a motion vector of a current prediction unit, derives spatial motion vector candidates using valid motion vectors of neighboring prediction units each of which exists at a predetermined position, derives temporal motion vector candidate of the current prediction unit, determines one of the spatial and temporal motions vector candidates as a motion vector predictor, calculates a motion vector difference between the motion vector of the current prediction unit and the motion vector predictor and encodes the motion vector difference and the reference picture index.01-24-2013
20130022118INTER PREDICTION METHOD AND APPARATUS USING ADJACENT PIXELS, AND IMAGE ENCODING/DECODING METHOD AND APPARATUS USING SAME - The present disclosure relates to an inter prediction method and apparatus using adjacent pixels, and a video encoding method and apparatus using the same. The inter prediction method for a predictive encoding includes: determining a current motion vector by estimating a motion of a current block; generating a reference block indicated by the current motion vector; calculating a motion compensation coefficient or an average compensation coefficient by using pixels neighboring the current block and pixels neighboring reference block; generating a changed reference block reflecting the motion compensation coefficient or the average compensation coefficient in the reference block; and determining the changed reference block as a predicted block of the current block. The present disclosure reduces a difference between an actual block and a predicted block by more accurately predicting the block to be encoded, thereby improving the compression efficiency.01-24-2013
20130022117TEMPORAL BLOCK MERGE MODE - In one embodiment, a method includes determining motion parameters for a temporally-located block to a current block of video content. The temporally-located block is located in a different picture from the current block. The temporally-located block is identified in a merge mode candidate list. The merge mode candidate list includes candidate blocks in which motion parameters are candidates to be used for the current block. The method then signals information to a decoder to indicate which motion parameters from a candidate block on the merge mode candidate list to use in decoding the current block. If a temporally-located block is identified, the method uses motion parameters for the temporally-located block in decoding the current block of video content.01-24-2013
20130022116CAMERA TAP TRANSCODER ARCHITECTURE WITH FEED FORWARD ENCODE DATA - Embodiments of the present disclosure include transcoder architecture that can decode an input encoded media data as raw media data and then utilize feed forward encode data (provided with the encoded media data) to encode the raw media data. Further, embodiments of the transcoder architecture include a camera tap in the transcoder architecture.01-24-2013
20130022126Power Efficient Motion Estimation Techniques for Video Encoding - Adaptive control can use hierarchical motion estimation (HME) and/or multiple reference motion estimation (MRME) for the motion estimation of current encoding blocks. Both HME and MRME are allowed in the motion estimation to achieve a high coding gain. Control consists of slice level control and macro-block (MB) level control. A slice is one or more contiguous macroblocks. In slice level control, it is decided to use only one reference frame or use multiple reference frames to coding current slice based on the motion vectors obtained in coarse level motion estimation. In MB level control, it is decided to perform MRME or perform HME for the MB and its subblocks based on the coarse level motion vectors of the MB. 01-24-2013
20130022125IMAGE PROCESSING DEVICE AND METHOD - The present disclosure relates to an image processing device and method whereby higher encoding efficiency can be achieved.01-24-2013
20130022127METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL - The present invention relates to a method and apparatus for processing a video signal, which can increase the accuracy of the motion vector prediction through motion vector scaling which takes a difference in the temporal distance between reference pictures into consideration. To this end, the present invention provides a video signal processing method and a video signal processing apparatus using the same, and the method comprises the steps of: scaling at least one neighboring partition motion vector for a motion vector prediction of the current partition; scaling the neighboring partition motion vector, which has been selected, when the reference picture of the neighboring partition motion vector is different from the reference picture of the current partition; acquiring a motion vector prediction value of the current partition using the scaled motion vector; and acquiring a motion vector of the current partition using the motion vector prediction value.01-24-2013
20130022124IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD - Disclosed is an image encoding device which is constructed in such a way as to include an encoding mode determining unit 01-24-2013
20130170553CODING MOTION VECTOR DIFFERENCE - The techniques described in this disclosure may be generally related to identifying when motion vector difference (MVD) is skipped for one or both reference picture lists. The techniques may further relate to contexts for signaling MVD values. The techniques may also be related to syntax that indicates when at least one of the MVD values is zero.07-04-2013
20080253457METHOD AND SYSTEM FOR RATE DISTORTION OPTIMIZATION - Method, video encoders, and digital systems are provide in which motion vector determination includes selecting a plurality of candidate motion vectors for a macroblock using a cost function including both a block distortion measure and a motion vector cost measure for single-partition motion vectors in the plurality of candidate motion vectors and using a cost function including a distortion measure without a motion vector cost measure for multi-partition motion vectors in the plurality of candidate motion vectors, and refining the plurality of candidate motion vectors to obtain a refined plurality of candidate motion vectors, wherein multi-partition motion vectors of the plurality of candidate motion vectors are refined using a cost function including a distortion measure without a motion vector cost measure and single-partition motion vectors of the plurality of candidate motion vectors are refined using a cost function including both a block distortion measure and a motion vector cost measure.10-16-2008
20080253456Video Codec With Weighted Prediction Utilizing Local Brightness Variation - There are provided video encoders, video decoders, and corresponding encoding and decoding methods for video data for a picture, wherein the video data has local brightness variation. The video encoder includes an encoder for inter-coding the video data using a localized weighted function to determine weights for the local brightness variation. The weights for the localized weighted function are derived without explicit coding.10-16-2008
20080247466Method and system for skip mode detection - A method for detecting a skip mode during encoding of a video sequence is provided. The video sequence includes a plurality of video frames, wherein each of the plurality of video frames includes a plurality of macroblocks. Each of the plurality of macroblocks includes a plurality of pixels. The method includes calculating a motion vector for a macroblock selected from the plurality of macroblocks, comparing the calculated motion vector of the macroblock with a predetermined skip motion vector of the macroblock, calculating a sum of absolute differences value for the skip motion vector of the macroblock, and selecting a skip mode for the macroblock. The skip mode is selected based on the calculated sum of absolute differences value and a predetermined threshold, wherein the predetermined threshold is based on a quantization parameter value of the macroblock.10-09-2008
20080247465Method and System for Mapping Motion Vectors between Different Size Blocks - A method and system for mapping motion vectors. A weight is determined for each motion vector of a set of input blocks of an input bitstream. Then, the set of motion vectors are mapped to an output motion vector of an output block of an output bitstream according to the set of weights.10-09-2008
20130170549MERGE MODE FOR MOTION INFORMATION PREDICTION - Disclosed herein are representative embodiments of processing digital image data. In one exemplary embodiment disclosed herein, for a current block of a first frame of digital image data, a list of motion vector prediction information for the current block is populated with candidate motion vector prediction data that includes default motion vector prediction data. In another exemplary embodiment disclosed herein, at least a portion of a coded video bitstream is received and a merge flag for a current block in a current frame is decoded. After the merge flag is decoded, at least one merge candidate for the current block is determined.07-04-2013
20080232473Method for Encoding Interlaced Digital Video Data - Interlaced video can be encoded in two layers, base layer and enhancement layer. A method for optimizing the encoding of motion vectors for enhancement layer is proposed. It comprises defining various different ways to encode the motion vectors, estimate the coding costs for each way, and select the way with the lowest coding cost. The various ways to encode enhancement layer motion vectors can be combined. Either motion vectors from base layer are reused, resulting in a scaling factor and an update vector, or new motion vectors are calculated. Either forward or backward or bi-directional prediction can be used. Either one frame or multiple frames can be taken as reference. The reference frame can be from the enhancement layer, base layer or both. Either the complete motion vectors are encoded, or only the difference between the motion vector and the corresponding BL motion vector is encoded.09-25-2008
20130202042RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - Computer-readable medium having an image decoding program performing: storing a reference image which is a previously decoded image; receiving coded information including motion vector and rounding method information specifying a rounding method used in synthesizing a prediction image of a currently decoded image; and synthesizing the prediction image via motion compensation using the motion vector information and reference image; wherein synthesizing a prediction image uses a positive and negative rounding method for interpolating pixel intensity values; wherein interpolation of pixel intensity values uses a rounding method specified by the rounding method information included in the encoded bitstream of the current P frame; wherein the rounding method information is not received from the encoded bitstream of an I frame; wherein rounding method information specifies one of two values; and wherein one of the two values specifies a positive rounding method, and another of the two values specifies a negative rounding method.08-08-2013
20130202044IMAGE REPRODUCING METHOD, IMAGE REPRODUCING DEVICE, IMAGE REPRODUCING PROGRAM, IMAGING SYSTEM, AND REPRODUCING SYSTEM - A image reproducing device decodes a moving picture stream having been subjected to inter-picture prediction encoding with a reference image memory accessed. A decoding processor performs variable length decoding of the moving picture stream on a picture-by-picture basis, and outputs an encoding parameter. A traffic analyzer estimates traffic to the reference image memory on the picture-by-picture basis based on the output encoding parameters. A reference image compression controller determines a compression mode in storing a reference image in the reference image memory based on the estimated traffic.08-08-2013
20130202045METHOD OF PREDICTING A MOTION VECTOR FOR A CURRENT BLOCK IN A CURRENT PICTURE - In one embodiment, a method of predicting a motion vector for a current block in a current picture by a moving picture decoding device includes obtaining, by the moving picture decoding device, a direction of a reference picture of the current picture, based on comparison of a display order of the reference picture and a display order of the current picture, obtaining, by the moving picture decoding device, at least three forward motion vectors for at least three other blocks than the current block based on the direction of the reference picture, and predicting, by the moving picture decoding device, a forward motion vector for the current block by using median operation of the at least three forward motion vectors.08-08-2013
20130202046METHOD OF PREDICTING A MOTION VECTOR FOR A CURRENT BLOCK IN A CURRENT PICTURE - In one embodiment, a method of predicting a motion vector for a current block in a current picture by a moving picture decoding device includes obtaining, by the moving picture decoding device, a direction of a reference picture of the current picture, based on comparison of a display order of the reference picture and a display order of the current picture, obtaining, by the moving picture decoding device, at least three motion vectors for at least three other blocks than the current block based on the direction of the reference picture and predicting, by the moving picture decoding device, a motion vector for the current block by using a median operation of the at least three motion vectors.08-08-2013
20080225952SYSTEM AND METHOD FOR PROVIDING IMPROVED RESIDUAL PREDICTION FOR SPATIAL SCALABILITY IN VIDEO CODING - A system and method for providing improved residual prediction for spatial scalability in video coding. In order to prevent visual artifacts in residual prediction in extended spatial scalability (ESS), each enhancement layer macroblock is checked to determine if the macroblock satisfies a number of conditions. If the conditions are met for an enhancement layer macroblock, then it is likely that visual artifacts will be introduced if applying residual prediction on the macroblock. Once such locations are identified, various mechanisms may be used to avoid or remove the visual artifacts.09-18-2008
20080225951Video processing system and device with encoding and decoding modes and method for use therewith - A video processing device operates in an encoding mode when a mode selection signal has a first value and operates in a decoding mode when the mode selection signal has a second value. The encoding mode utilizes a plurality of function specific hardware engines that each perform a specific coding function and the decoding module utilizes at least one of the plurality of hardware engines.09-18-2008
20110261886IMAGE PREDICTION ENCODING DEVICE, IMAGE PREDICTION ENCODING METHOD, IMAGE PREDICTION ENCODING PROGRAM, IMAGE PREDICTION DECODING DEVICE, IMAGE PREDICTION DECODING METHOD, AND IMAGE PREDICTION DECODING PROGRAM - An image prediction encoding device 10-27-2011
20130170550REPRESENTATIVE MOTION INFORMATION FOR TEMPORAL MOTION PREDICTION IN VIDEO ENCODING AND DECODING - Disclosed herein are representative embodiments of generating representative motion information that can be used during processing of a video frame. In one exemplary embodiment disclosed herein, a reference frame comprising a group of blocks is processed, and motion information for the group of blocks is compressed at least by buffering representative motion-vector information and representative reference-frame index information for the group of blocks. The representative reference-frame index information comprises reference-frame index information of a representative block of the group of blocks, and the representative reference-frame index information represents reference-frame index information for the group of blocks during processing of a current frame.07-04-2013
20130170551Halo Reduction in Frame-Rate-Conversion Using Hybrid Bi-Directional Motion Vectors for Occlusion/Disocclusion Detection - A frame-rate converter reduces halo artifacts along edges of moving objects. Halo artifacts occur on interpolated frames where a moving object covers and uncovers pixels along its edges. Motion estimation among three original frames produces hybrid direction motion vectors that are bi-directional for background and objects, but are unidirectional for covered and uncovered regions, since motion vectors with large matching errors are deleted. Covered regions in the interpolated frame are detected as intersecting only a forward but no backward hybrid motion vector. Bi-directional motion estimation from the hybrid motion vectors of two original frames produces refined motion vectors for the interpolated frame. Refined motion vectors in the covered regions are deleted and replaced with hybrid motion vectors from the original frames. Hybrid motion vectors from the original frames are assigned to the critical covered regions rather than using interpolated vectors in the covered regions, reducing halo artifacts.07-04-2013
20130170554VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, AND PROGRAMS THEREOF - Regions based on which an interpolation method of a fractional-accuracy pixel is switched are optimized, and the interpolation method is switched for each of the divided regions, thereby reducing residual energy of inter-frame prediction with motion compensation. A video encoding apparatus is provided with: an encoding information acquiring unit which acquires encoding information for each block; a region classification unit which performs a region classification on a block-by-block basis in accordance with the encoding information; a divided region redefinition processing unit which shifts a region dividing line in a horizontal direction, a region dividing line in a vertical direction, or both the region dividing line in the horizontal direction and the region dividing line in the vertical direction based on a result of the region classification, and determines a region dividing line with which density of blocks belonging to a particular region classification is greater than or equal to a predetermined threshold value; an interpolation method switching unit which switches an interpolation method of a fractional-accuracy pixel for each of divided regions divided by the region dividing line; an interpolation performing unit which performs interpolation of the fractional-accuracy pixel for each of the divided regions; a picture encoding unit which encodes a picture using inter-frame prediction with motion compensation of fractional-accuracy for an interpolated picture; and a region classification information encoding unit which encodes information on the region classification.07-04-2013
20130142266CO-COMPRESSION AND CO-DECOMPRESSION OF DATA VALUES - A first and a second data value are co-compressed by generating a sequence of symbols having a most significant symbol that is the most significant symbol of a compressed representation of the first data value and a least significant symbol that is the most significant symbol of a compressed representation of the second data value. The compressed representation of the first data value corresponds to at least a portion of the symbols of the sequence of symbols starting from the most significant symbol and extending towards the least significant symbol in a first reading direction. The compressed representation of the second data value also corresponds to at least a portion of the symbols of the sequence of symbols, however, starting from the least significant symbol and extending in an opposite reading direction towards the most significant symbol.06-06-2013
20130142262Buffered Adaptive Filters - A buffer is established in a video encoder and/or a video decoder. An adaptive filter is buffered in the established buffer. An input video signal is coded using the buffered filter. The filter buffer may be managed, e.g., as to buffer size or capacity, filter placement within the buffer, and buffered default filters. Adaptive filters may be signaled and buffered for multiple reference pictures.06-06-2013
20130142263METHOD AND APPARATUS FOR ESTIMATING MOTION VECTOR USING PLURALITY OF MOTION VECTOR PREDICTORS, ENCODER, DECODER, AND DECODING METHOD - Provided are a method and apparatus for estimating a motion vector using a plurality of motion vector predictors, an encoder, a decoder, and a decoding method. The method includes calculating spatial similarities between the current block and the plurality of neighboring partitions around the current block, selecting at least one of the neighboring partitions based on the calculated spatial similarities, and estimating a motion vector of the selected partition as the motion vector of the current block.06-06-2013
20130142264METHOD AND APPARATUS FOR ESTIMATING MOTION VECTOR USING PLURALITY OF MOTION VECTOR PREDICTORS, ENCODER, DECODER, AND DECODING METHOD - Provided are a method and apparatus for estimating a motion vector using a plurality of motion vector predictors, an encoder, a decoder, and a decoding method. The method includes calculating spatial similarities between the current block and the plurality of neighboring partitions around the current block, selecting at least one of the neighboring partitions based on the calculated spatial similarities, and estimating a motion vector of the selected partition as the motion vector of the current block.06-06-2013
20130177084MOTION VECTOR SCALING IN VIDEO CODING - This disclosure proposes techniques for motion vector scaling. In particular, this disclosure proposes that both an implicit motion vector scaling process (e.g., the POC-based motion vector scaling process described above), as well as an explicit motion vector (e.g., a motion vector scaling process using scaling weights) may be used to perform motion vector scaling. This disclosure also discloses example signaling methods for indicating the type of motion vector scaling used.07-11-2013
20130142265METHOD AND APPARATUS FOR ESTIMATING MOTION VECTOR USING PLURALITY OF MOTION VECTOR PREDICTORS, ENCODER, DECODER, AND DECODING METHOD - Provided are a method and apparatus for estimating a motion vector using a plurality of motion vector predictors, an encoder, a decoder, and a decoding method. The method includes calculating spatial similarities between the current block and the plurality of neighboring partitions around the current block, selecting at least one of the neighboring partitions based on the calculated spatial similarities, and estimating a motion vector of the selected partition as the motion vector of the current block.06-06-2013
20110274175MOTION VECTOR GENERATION APPARATUS AND MOTION VECTOR GENERATION METHOD - In a motion vector generation apparatus 11-10-2011
20110274174Method for coding a picture sequence, corresponding method for reconstruction and stream of coded data representative of said sequence - A method for reconstruction of a picture sequence coded in accordance with a coding method specifying a set of coding tools and/or their associated coding parameters is disclosed. The pictures being divided into coding entities. The method for reconstruction according to the invention comprises the following steps for each coding entity coded in INTER mode: 11-10-2011
20110274173Video compression and encoding method - A method of compressing video data having at least one frame having at least one block and each block having an array of pixels is provided. The method transforms the pixels of each block into coefficients and creates an optimal transmission order of the coefficients. The method also optimizes the speed of processing compressed video data by partitioning the data bitstream and coding each partition independently. The method also predicts fractional pixel motion by selecting an interpolation method for each given plurality or block of pixels depending upon at least one metric related to each given block and varies the method from block to block. The method also enhances error recovery for a current frame using a frame prior to the frame immediately before the current frame as the only reference frame for lessening quality loss during data transmission. Enhanced motion vector coding is also provided.11-10-2011
20080212681VIDEO ENCODING AND VIDEO/AUDIO/DATA MULTIPLEXING DEVICE - The present invention provides a buffer architecture and latency reduction mechanism for buffering uncompressed/compressed information. This combination provides for a proficient division of the encoding task and quicker through-put time. The invention teaches a single chip digital signal processing device for real time video/audio compression comprising a plurality of processors, including a video input processor, a motion estimation processor, a digital signal processor, and a bitstream processor, wherein processing and transfer of the signals within the device is done in a macroblock-by-macroblock manner. The device can include a multiplexing processor that is comprised of a storage unit which buffers a compressed video bitstream and a processor which retrieves the compressed video bitstream from the storage unit and produces a multiplexed data stream whereby the compressed video bitstream is processed in a pipeline manner.09-04-2008
20080212677Efficient Video Block Mode Changes in Second Pass Video Coding - This disclosure describes techniques for second pass video coding in a multi-pass video coding scenario. The coding modes for some video blocks encoded during a second pass may be changed relative to the coding modes used for such video blocks in the first pass. However, motion information does not change for those video blocks that have the changed modes. In particular, mode changes can be made in the second coding pass relative to the modes used in the first coding pass without changing the manner in which motion information will be derived at the decoder, e.g., due to similarities between the original modes of the first pass and changed modes used in the second pass. The second pass coding techniques may also include quantization parameter adjustments, and the mode changes can cause such quantization parameter adjustments to have more profound refinements effects on the second pass coding.09-04-2008
20130202047APPARATUS AND METHOD FOR VIDEO ENCODING/DECODING - A video encoding/decoding apparatus includes a video encoder and a video decoder. The video encoder is configured to set up motion vector resolutions differentiated by search areas centered on a prediction motion vector of a current block, perform a motion estimation with a resolution corresponding to each of the search areas to generate a motion vector, and encode a differential motion vector between the generated motion vector and the prediction motion vector. The video decoder is configured to extract the differential motion vector from a bitstream, and decode the extracted differential motion vector with a resolution corresponding to a search area where the differential motion vector belongs to among the search areas.08-08-2013
20130136182MOTION VECTOR REFINING DEVICE AND VIDEO REFINING METHOD THEREOF - A motion vector refining device and a video refining method thereof are provided. The motion vector refining device includes a motion estimation unit, a reliability analysis module and a motion vector mixing module. The motion estimation unit receives a plurality of frames in a video signal or using historical information (for example, motion vectors of closing frames) previously calculated by the motion estimation unit, so as to estimate N target motion vectors. The reliability analysis module analyzes spatial and temporal reliability factors of the N target motion vectors, so as to estimate and adjust N reliability weight values dynamically. The motion vector mixing module uses the reliability weight values to dynamically mix the target motion vectors to produce a refined motion vector. Therefore, the motion vector refining device and a motion interpolation apparatus using the same can avoid instability of a motion vector on an edge of a moving object.05-30-2013
20130177081METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO USING EXPANDED BLOCK FILTERING - Methods and apparatuses for encoding and decoding a video are provided. The method of encoding a video includes generating an extended corresponding block by extending a corresponding block of a reference picture; generating a filtered extended corresponding block by using a predetermined first filter; performing interpolation in sub-pixel units by using a predetermined second filter; and performing motion prediction and compensation by using the reference picture that is interpolated in the sub-pixel units. The method of decoding a video includes extracting information of a current block; generating an extended corresponding block by extending a corresponding block of a reference picture; generating a filtered extended corresponding block by applying a predetermined first filter to the extended corresponding block; performing interpolation in sub-pixel units by applying a predetermined second filter to the filtered extended corresponding block; and performing motion compensation by using the reference picture that is interpolated in the sub-pixel units.07-11-2013
20130177082MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding apparatus includes an intra-inter prediction unit which calculates a second motion vector by performing a scaling process on a first motion vector of a temporally neighboring corresponding block, when selectively adding, to a list, a motion vector of each of one or more corresponding blocks each of which is either a block included in a current picture to be coded and spatially neighboring a current block to be coded or a block included in a picture other than the current picture and temporally neighboring the current block, determines whether the second motion vector has a magnitude that is within a predetermined magnitude or not within the predetermined magnitude, and adds the second motion vector to the list when the intra-inter prediction unit determines that the second motion vector has a magnitude that is within the predetermined magnitude range.07-11-2013
20130177083MOTION VECTOR CANDIDATE INDEX SIGNALING IN VIDEO CODING - A video encoder generates a first and a second candidate list. The first candidate list includes a plurality of motion vector (MV) candidates. The video encoder selects, from the first candidate list, a MV candidate for a first prediction unit (PU) of a coding unit (CU). The second MV candidate list includes each of the MV candidates of the first MV candidate list except the MV candidate selected for the first PU. The video encoder selects, from the second MV candidate list, a MV candidate for a second PU of the CU. A video decoder generates the first and second MV candidate lists in a similar way and generates predictive sample blocks for the first and second PUs based on motion information of the selected MV candidates.07-11-2013
20130177085Systems and Methods for Video Denoising - A method for video denoising, the method includes extracting a current pixel from a current video frame and n-1 pixels from respective n-1 previous video frames to form an n-point pixel data set, wherein the current pixel has an initial value; temporally filtering the current pixel using the n-point pixel data set to generate a temporal estimated true value for the pixel; estimating a quantity of outliers in the n-point pixel data set; if the quantity of outliers is greater than or equal to a threshold, spatially filtering the current pixel using neighboring pixels in the current video frame to generate an spatial estimated true value for the pixel, and using the spatial estimated true value for the pixel as a final estimated value for the pixel; if the quantity of outliers is less than the threshold, using the temporal estimated true value for the pixel as the final estimated value for the pixel.07-11-2013
20130114726IMAGE CODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING METHOD, IMAGE DECODING APPARATUS, AND STORAGE MEDIUM - An image coding method for an image coding apparatus includes determining an anchor picture in a same view as a picture to be coded, determining an anchor block corresponding to a block to be coded, selecting an inter-view prediction method, encoding an inter-view prediction mode indicating the inter-view prediction method, and calculating, using a parallax vector of the anchor block, a parallax vector of the block to be coded.05-09-2013
20130114725MOTION VECTOR SCALING FOR NON-UNIFORM MOTION VECTOR GRID - In one embodiment, a method determines a scaled motion vector for a first block. A motion vector for a second block is determined where the motion vector is on a non-uniform motion vector grid. The method then maps the motion vector for the second block to a higher accuracy uniform motion vector grid that is of a higher accuracy than the non-uniform motion vector grid and scales the motion vector for the second block on the higher accuracy motion vector grid. The scaled motion vector is mapped on the higher accuracy motion vector grid to the non-uniform motion vector grid. The scaled motion vector on the non-uniform motion vector grid is associated with the first block for a temporal prediction process.05-09-2013
20130114719INTEGER TRANSFORM VIDEO COMPRESSION SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT - A video decoding method, system and computer program product perform inverse transforming of transform coefficients for a video image. The inverse transforming is performed with a processing circuit on a first block of transform coefficients by a transform matrix having a plurality of vectors. The coefficients are transformed into a corresponding second block of residual pixel values for the video image. The transform matrix consists of integer elements, and includes a 4 point transform as whole or partial vectors of the transform matrix. The first row of the 4 point transform includes elements a a a a. The second row includes b c −c −b. The third row includes a −a −a a. The fourth row includes c −b b −c, wherein a, b and c comply with |b05-09-2013
20130094588IMAGE INFORMATION ENCODING METHOD AND ENCODER, AND IMAGE INFORMATION DECODING METHOD AND DECODER - An image processing method includes decoding encoded image data to generate a decoded image signal including a luma signal and a chroma signal. The method further includes detecting a condition that a reference field has a different parity from a current field and that the number of chroma pixels is vertically different from the number of luma pixels.04-18-2013
20130094587METHOD AND DEVICE FOR DETERMINING A SALIENCY VALUE OF A BLOCK OF A VIDEO FRAME BLOCKWISE PREDICTIVE ENCODED IN A DATA STREAM - The invention is made in the field of saliency determination for videos block-wise predictive encoded in a data stream.04-18-2013
20130094586Direct Memory Access With On-The-Fly Generation of Frame Information For Unrestricted Motion Vectors - A method for performing motion estimation based on at least a first VOP stored in a memory includes the steps of: receiving a request to read a data block indicative of at least a portion of the first VOP for predicting a second VOP that is temporally adjacent to the first VOP; utilizing a DMA module for determining whether the data block is a UMV block; translating a block address for retrieving at least a portion of the data block from the memory as a function of one or more parameters generated by the DMA module; and generating a complete data block as a function of the portion of the data block retrieved from the memory and the one or more parameters generated by the DMA module.04-18-2013
20130114727IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - A motion vector number limit setting unit sets the upper limit value of the number of motion vectors in accordance with macroblock size. A motion prediction/compensation unit detects an optimum prediction mode having a smaller number of motion vectors than the upper limit value. Using the motion vectors of the detected optimum prediction mode, the motion prediction/compensation unit performs motion compensation on a reference image, to generate a predicted image. As the upper limit value of the number of motion vectors is set in accordance with macroblock size, the number of motion vectors is not restricted to a smaller number than necessary, and image degradation and the like can be prevented when extended macroblocks are used.05-09-2013
20130094585TRACKING A REFERENCE PICTURE ON AN ELECTRONIC DEVICE - A method for tracking a reference picture on an electronic device is described. The method includes receiving a bitstream. The method also includes decoding a portion of the bitstream to produce a decoded reference picture. The method further includes tracking the decoded reference picture in a decoded picture buffer (DPB) with reduced overhead referencing. The method additionally includes decoding a picture based on the decoded reference picture.04-18-2013
20130114723METHOD FOR CODING AND AN APPARATUS - The invention relates to a method for encoding, a method for decoding, an apparatus, computer program products, an encoder and a decoder for video information. The motion vector for a block in a video image is predicted from a set of motion vector prediction candidates determined based on previously-coded motion vectors. A motion vector prediction candidate is included in the set based on the location of the block associated with the first spatial motion vector prediction candidate and in comparison with motion vector prediction candidates already in the set.05-09-2013
20130101041EXTERNAL VECTORS IN A MOTION ESTIMATION SYSTEM - A method and apparatus for motion estimation in a sequence of video images is provided. Each field or frame in a sequence of video images is sub-divided into a plurality of blocks. Each block in each video field or frame has assigned to it a set of candidate motion vectors. The vector which produces a best match to a block in a previous field or frame, from the set of candidate motion vectors, is assigned to that block thus forming the motion vector field for the current video field or frame using the selected vector. The set of candidate motion vectors assigned to a block include one or more candidate vectors derived from an external source vector field and each such vector from an external source vector field is assigned a weighting that biases towards or away from the selection of that vector.04-25-2013
20130114720JOINT SPATIAL AND TEMPORAL BLOCK MERGE MODE FOR HEVC - In one embodiment, a spatial merge mode or a temporal merge mode for a block of video content may be used in merging motion parameters. Both spatial and temporal merge parameters are considered concurrently and do not require utilization of bits or flags or indexing to signal a decoder. If the spatial merge mode is determined, the method merges the block of video content with a spatially-located block, where merging shares motion parameters between the spatially-located block and the block of video content. If the temporal merge mode is determined, the method merges the block of video content with a temporally-located block, where merging shares motion parameters between the temporally-located block and the block of video content.05-09-2013
20130114718ADDING TEMPORAL SCALABILITY TO A NON-SCALABLE BITSTREAM - Innovations described herein facilitate the addition of temporal scalability to non-scalable bitstreams. For example, a bitstream rewriter receives units of encoded video data for a non-scalable bitstream from components of a hardware-based encoder. The bitstream rewriter changes at least some of the units of encoded video data so as to produce a scalable bitstream with temporal scalability. In doing so, the bitstream rewriter can associate an original sequence parameter set (SPS) and original picture parameter set (PPS) with pictures for a temporal base layer, and associate a new SPS and new PPS with pictures for a temporal enhancement layer. The bitstream rewriter can also alter syntax elements in the units of encoded video data, for example, changing syntax elements in a slice header in ways that avoid bit shifting operations for following coded slice data for a unit of encoded video data for the temporal enhancement layer.05-09-2013
20130101043ENCODING APPARATUS, ENCODING METHOD AND PROGRAM - There is provided an encoding apparatus, including an intra-block determination section which determines that a prediction mode of a block is a forced intra-prediction mode, by a frequency based on a priority of each block of an image to be encoded, an encoding section which encodes the block, to which the prediction mode has been determined to be an intra-prediction mode by the intra-block determination section, with the intra-prediction mode, and a transmission section which transmits an encoded result of the image to be encoded obtained by the encoding section, and the prediction mode of the image.04-25-2013
20130101045MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - According to a picture coding method, a coded picture is stored, as a reference picture, into a storage unit; commands indicating correspondence between reference pictures and reference indices for designating reference pictures and coefficients used for generation of predictive images are generated; a reference picture being used when motion compensation is performed on a current block in a current picture to be coded is designated by a reference index; a predictive image is generated by performing linear prediction on a block being obtained by motion estimation within the designated reference picture, by use of a coefficient corresponding to the reference index; a coded image signal including a coded signal obtained by coding a prediction error being a difference between the current block in the current picture to be coded and the predictive image, the commands, the reference index and the coefficient is outputted.04-25-2013
20130101044IMAGE INFORMATION ENCODING METHOD AND ENCODER, AND IMAGE INFORMATION DECODING METHOD AND DECODER - A motion compensation method includes receiving mode information that identify a field motion estimate/compensate mode. The method further includes performing, on the basis o