Patent application number | Description | Published |
20080225946 | Error Concealment Technique Using Weighted Prediction - A decoder ( | 09-18-2008 |
20080232463 | Fast Intra Mode Prediction for a Video Encoder - There are provided video encoders and corresponding methods for encoding video data for an image that is divisible into macroblocks. A video encoder includes an encoder for performing inta mode selection when encoding a current macroblock by testing a first subset of intra modes to compute a rate distortion cost, and utilizing the rate distortion cost to determine whether to terminate the intra mode selection and which additional intra modes, if any, are to be examined with respect to the current macroblock. | 09-25-2008 |
20080253456 | Video 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 |
20080298470 | Video Error Detection Technique Using a Crc Parity Code - Detection of errors in a video stream occurs by calculating an error detection code, such as a Cyclic Redundancy Check (CRC) code over a group of not more than N macroblocks in a slice of the stream prior and after transmission, where N is an integer greater than zero but less than the total number of macroblocks in the slice. A comparison of the error detection codes reveals whether any errors exist in the group of macroblocks. If the group has no errors, normal decoding occurs. If the macroblock group has an error, then the macroblock group, and the remaining blocks in the slice undergo error concealment. | 12-04-2008 |
20080304567 | Complexity 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 |
20090010333 | Method and Apparatus for Constrained Prediction for Reduced Resolution Update Mode and Complexity Scalability in Video Encoders and Decoders - There are provided methods and apparatus for constrained prediction for reduced resolution update mode and complexity scalability in video encoders and decoders. A scalable complexity video encoder includes an encoder for encoding a block in a particular picture in the video sequence by generating an intra mode prediction for the block using a constrained intra prediction process that reduces artifacts for both low and high resolutions in a reduced resolution update mode when the particular picture is eventually decoded. The constrained intra prediction process reduces the artifacts by prohibiting the use of particular prediction modes associated with the introduction of the artifacts in the reduced resolution update mode. | 01-08-2009 |
20090067505 | Method 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 |
20090074061 | Method and Apparatus for Macroblock Adaptive Inter-Layer Intra Texture Prediction - There are provided scalable video encoders and decoders and corresponding methods for scalable video encoding and decoding. A scalable video encoder includes an encoder for selectively using spatial intra prediction to code, on a macroblock adaptive basis, an enhancement layer residue generated between an enhancement layer macroblock and a corresponding upsampled base layer macroblock. | 03-19-2009 |
20090074070 | Method 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 |
20090080535 | Method and apparatus for weighted prediction for scalable video coding - There are provided scalable video encoder and 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 applying a same weighting parameter to an enhancement layer reference picture as that applied to a lower layer reference picture used for encoding a block in a lower layer of the picture. The block in the enhancement layer corresponds to the block in the lower layer, and the enhancement layer reference picture corresponds to the lower layer reference picture. The scalable video decoder includes a decoder for decoding a block in an enhancement layer of a picture by applying a same weighting parameter to an enhancement layer reference picture as that applied to a lower layer reference picture used for decoding a block in a lower layer of the picture. The block in the enhancement layer corresponds to the block in the lower layer, and the enhancement layer reference picture corresponds to the lower layer reference picture. | 03-26-2009 |
20090086827 | Method and Apparatus for Optimization of Frame Selection for Flexible Macroblock Ordering (FMO) Video Encoding - There are provided a method and apparatus for optimizing frame selection for flexible macroblock ordering video encoding. A video encoder includes an encoder for encoding a group of pictures by selecting between a frame mode and at least one flexible macroblock ordering mode. The pictures in the group are allowed to be concurrently encoded in different ones of the frame mode and the least one flexible macroblock ordering mode. The mode selection for each of the pictures in the group is based on an achieved maximum error resilience capability for the group of pictures. | 04-02-2009 |
20090122860 | Method and Apparatus for Adaptive Group of Pictures (GOP) Structure Selection - There are provided a method and apparatus for adaptive Group of Pictures structure selection. The apparatus includes an encoder for encoding a video sequence using a Group of Pictures structure by performing, for each Group of Pictures for the video sequence, picture coding order selection, picture type selection, and reference picture selection. The selections are based upon a Group of Pictures length. | 05-14-2009 |
20090129474 | Method 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 |
20090129689 | Transcoded Images for Improved Trick Play - The present invention provides a method and apparatus for facilitating processing of images contained in an encoded video stream. In one embodiment of the present invention, a plurality of non-intra coded images are transcoded into intra-coded images (I-images). The transcoded I-images are then used to facilitate trick mode playback, such as reverse playback, fast reverse playback or fast forward playback. In addition, an image sequence window is defined and transcoded I-images which fall outside of the image sequence window are deleted from a memory. | 05-21-2009 |
20090147718 | Method and Apparatus for Reliably Delivering Multicast Data - A method and apparatus are described including mapping a multicast connection to a unicast uniform resource identifier, establishing a state for a multicast-to-unicast conversion, allocating ports, receiving multicast addressed data packets and converting the multicast addressed data packets to unicast addressed data the packets. | 06-11-2009 |
20090147860 | METHOD AND APPARATUS FOR SIGNALING VIEW SCALABILITY IN MULTI-VIEW VIDEO CODING - There are provided methods and apparatus for signaling view scalability in multi-view video coding. An apparatus includes an encoder for encoding at least one picture for at least one view corresponding to multi-view video content in a resultant bitstream. The encoder signals at least one of a view direction and a view level to support view scalability for the at least one view using at least one of a message, a field, a flag, and a syntax element. | 06-11-2009 |
20090168884 | Method 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 |
20090175344 | Method 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 |
20090185616 | Multi-View Video Coding Method and Device - There are provided method and apparatus for use in a multi-view video coding system. The apparatus includes an encoder for encoding at least two views corresponding to multi-view video content into a resultant bitstream, wherein the resultant bitstream is encoded to include view specific information. The view specific information indicates a decoding interdependency between at least some of the at least two views. | 07-23-2009 |
20090204992 | Method, apparatus and system for personalized broadcast media reception - The present invention advantageously provides a method, apparatus and system for personalized broadcast media content including a user interface for enabling personalization, which provides efficient use of network bandwidth and minimizes receiver device battery usage. In one embodiment, a user profile is pre-defined on a receiving device to indicate the recording interests of the user. Individual clips to be broadcast are associated with flexible metadata tags, such that when content, particularly video programs, is broadcast, the receiver device selects individual programs to record based upon content tags matching the user interests indicated in the profile. The selection process can also consider viewing statistics. | 08-13-2009 |
20090207904 | Multi-View Video Coding Method and Device - There are provided method and apparatus for use in a multi-view video coding system. The apparatus includes an encoder for encoding at least two views corresponding to multi-view video content into a resultant bitstream, wherein the resultant bitstream is encoded to include view specific information. The view specific information indicates a decoding interdependency between at least some of the at least two views. | 08-20-2009 |
20090207919 | Method and Apparatus for Weighted Prediction for Scalable Video Coding - There are provided scalable video encoder and 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 applying a same weighting parameter to an enhancement layer reference picture as that applied to a lower layer reference picture used for encoding a block in a lower layer of the picture. The block in the enhancement layer corresponds to the block in the lower layer, and the enhancement layer reference picture corresponds to the lower layer reference picture. The scalable video decoder includes a decoder for decoding a block in an enhancement layer of a picture by applying a same weighting parameter to an enhancement layer reference picture as that applied to a lower layer reference picture used for decoding a block in a lower layer of the picture. The block in the enhancement layer corresponds to the block in the lower layer, and the enhancement layer reference picture corresponds to the lower layer reference picture. | 08-20-2009 |
20090232225 | METHOD AND APPARATUS FOR ANALYTICAL AND EMPIRICAL HYBRID ENCODING DISTORTION MODELING - There are provided a method and apparatus for analytical and empirical hybrid encoding distortion modeling. An apparatus includes a distortion calculator for modeling video encoding distortion by dividing the video encoding distortion into a first portion and a second portion, calculating the first portion using empirical calculations, and calculating the second portion using analytical calculations. | 09-17-2009 |
20090238280 | Method 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 |
20090245283 | METHOD AND APPARATUS FOR REPAIRING SAMPLES INCLUDED IN CONTAINER FILES HAVING LOST PACKETS - There are provided a method and apparatus for repairing samples included in container files having lost packets. The apparatus includes a receiver and a file patcher. The receiver is for receiving packets including container files therein, identifying any of the packets for which a packet loss has occurred, and identifying at least one sample having data included in the identified packets that is affected by the packet loss. The at least one sample respectively corresponds to a particular container file. The file patcher is for repairing the particular container file with respect to the at least one sample. | 10-01-2009 |
20090252228 | Trick Play Using Temporal Layering - The present invention provides a method and apparatus for encoding video content into a novel temporal layered coding structure. In one embodiment of the present invention, a plurality of sub-sequence layers are defined in a layer hierarchy in accordance with the present invention. A plurality of images within a sub-sequence of a group of images are selectively assigned to a respective one of the sub-sequence layers. A grouping of images contained in any sequential combination of sub-sequence layers that includes a hierarchically lowest of the sub-sequence layers results in a group of images that temporally are substantially evenly spaced. A related method and apparatus for decoding the temporally layered video content are also disclosed. | 10-08-2009 |
20090274217 | METHODS 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 |
20100027615 | Picture identification for multi-view video coding - According to a general aspect, a picture from a first view, a picture from a second view, and dependency information are accessed. The dependency information describes one or more inter-view dependency relationships for the picture from the first view. Based on the dependency information, it is determined whether the picture from the first view is a reference picture for the picture from the second view. One application area involves determining whether pictures in a decoded picture buffer are reference pictures for pictures that have not yet been decoded. The pictures in the buffer may be marked to indicate whether they continue to be needed as inter-view reference pictures. | 02-04-2010 |
20100034258 | Picture management for multi-view video coding - According to a general aspect, a decoded picture is removed from memory based on dependency information that describes one or more inter-view dependency relationships for the picture. Implementations may also include accessing a picture from a first view and the dependency information. The dependency information may describe one or more inter-view dependency relationships for the picture from the first view. The picture from the first view may be decoded to produce the decoded picture. The decoded picture may be stored in memory. One application area involves removing pictures from a decoded picture buffer when such pictures are no longer needed as a reference picture. | 02-11-2010 |
20100091839 | Flexible redundancy coding - Various disclosed implementations allow a flexible amount of redundancy to be used in coding. In one general implementation, information is accessed for determining which of multiple encodings of at least a portion of a data object to send over a channel. A set of multiple encodings is determined for sending over the channel, with the set including at least one and possibly more of the multiple encodings, and the number of encodings in the set being based on the accessed information. In a more particular implementation, the redundant slice feature of the H.264/AVC coding standard is used, and a variable number of redundant slices is transmitted for any given picture based on current channel conditions. | 04-15-2010 |
20100111163 | Method for p-domain frame level bit allocation for effective rate control and enhanced video encoding quality - A method is claimed for encoding a group of pictures at a target bit rate. A pre-analysis procedure ( | 05-06-2010 |
20100111193 | METHODS AND APPARATUS FOR THE USE OF SLICE GROUPS IN DECODING 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 and method are described which encodes at least two views corresponding to multi-view video content using multiple slice groups. Furthermore, an apparatus and method are described for decoding at least two views corresponding to multi-view video content using multiple slice groups. | 05-06-2010 |
20100130122 | APPARATUS AND METHOD FOR PERFORMING POWER MANAGMENT IN A RECEIVER - A Digital Video Broadcasting-Handheld (DVB-H) system comprises a head-end and at least one receiver. The head-end uses the File Delivery over Unidirectional Transport (FLUTE) protocol for transmitting an electronic service guide (ESG) and content to the receiver. The receiver determines a time delay for receiving content as a function of a value of a PublishedStartTime parameter from the ESG and the actual time the receiver receives the content. Using this time delay, the receiver forms a time estimate for receiving selected content as a function of a value of a PublishedStartTime parameter from the ESG for the selected content and the determined time delay. The receiver then performs power, management such that during those intervals of time that the receiver is not expected to receive the selected content the receiver can reduce power. | 05-27-2010 |
20100138870 | BROADCAST CLIP SCHEDULER - A scheduler schedules multimedia content files for transmission over a broadcast network. Multimedia content files can be any sort of audio/video clips like, sports video, music video, news clip, movie sound track etc. In particular, the scheduler determines a transmission order for content files as a function of a dynamic priority value, which is determined in accordance with at least a dissimilarity measure between the content files; wherein the dissimilarity measure of the media content files is further determined as a function of the clip meta data associated with each clip. Schedule timing information and meta data information is transmitted over a broadcast network along with the clips so that receivers can do selective reception of their preferred clips, saving battery power and storage. | 06-03-2010 |
20100142618 | METHODS 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 |
20100158110 | Methods and Apparatus for Weighted Prediction in Scalable Video Encoding and Decoding - There are provided methods and apparatus for weighted prediction in scalable video encoding and decoding. A scalable video encoder includes an encoder ( | 06-24-2010 |
20100158133 | Method and Apparatus for Using High-Level Syntax in Scalable Video Encoding and Decoding - According to an aspect of the present invention, there are provided method and apparatus for using high-level syntax in scalable video encoding and decoding. In one embodiment, a scalable video encoder includes an encoder for encoding video signal data by adding fragment order information in a network abstraction layer unit header ( | 06-24-2010 |
20100158134 | Method and Apparatus for Contrained Variable Bit Rate (VBR) Video Encoding - A method and apparatus are provided for encoding video signal data for transmission in a network. The method includes the step of encoding the video signal data at a variable bit rate using at least one of a prioritized structure or a scalable coding structure to obtain a bitstream having a base layer and an enhancement layer. The encoding step encodes the video signal data such that a base layer bitrate is constrained ( | 06-24-2010 |
20100158135 | Region of Interest H.264 Scalable Video Coding - An encoder, a decoder, corresponding encoding and decoding methods, video signal structure, and storage media are provided for scalable video encoding and decoding. A scalable video encoder includes an encoder ( | 06-24-2010 |
20100166071 | Method 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 |
20100215103 | Method 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 |
20100220939 | Method and Apparatus for Edge-Based Spatio-Temporal Filtering - There are provided methods and apparatus for edge-based spatio-temporal filtering. An apparatus for filtering a sequence of pictures includes a spatial filter, a motion compensator, a deblocking filter, and a temporal filter. The spatial filter is for spatially filtering a picture in the sequence and at least one reference picture selected from among previous pictures and subsequent pictures in the sequence with respect to the picture. The motion compensator, in signal communication with the spatial filter, is for forming, subsequent to spatial filtering, multiple temporal predictions for the picture from the at least one reference picture. The deblocking filter, in signal communication with the motion compensator, is for deblock filtering the multiple temporal predictions. The temporal filter, in signal communication with the deblocking filter, is for temporally filtering the multiple temporal predictions and combining the multiple temporal predictions to generate a noise reduced version of the picture. | 09-02-2010 |
20100232506 | METHOD 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 |
20100278178 | APPARATUS AND METHOD FOR FILE SIZE ESTIMATION OVER BROADCAST NETWORKS - The apparatus and method for estimating the size of content being received before the actual transmission of the data utilizes Electronic Service Guide (ESG) information. The ESG information assists a client device in obtaining file information before the file is actually transmitted by the source of the same. In this manner, the power supply of the user device can be managed more efficiently and provide the user with the ability to make storage determinations at their user device before expending the power resources necessary to obtain (i.e., download) and store a particular file of interest to the user without requiring any user intervention. | 11-04-2010 |
20100278236 | REDUCED VIDEO FLICKER - Various implementations for reducing artifacts such as, for example, I-frame flicker are proposed. Particular implementations produce a no-flicker reference in which a picture intended to be coded as an I-frame is, first, coded as a P-frame using a reference picture from the previous GOP. Thus, continuity with the previous GOP is provided. According to a general aspect, a source image is inter-coded to produce coded source data. The coded source data is decoded to produce a modified source. The modified source is intra-coded to produce coded modified-source data. The coded modified-source data is decoded to produce a reference image. | 11-04-2010 |
20100278275 | DISTORTION ESTIMATION - According to an implementation, a value of distortion is determined ( | 11-04-2010 |
20100315561 | Robust mode staggercasting fast channel change - A method and apparatus for staggercasting a plurality of content representative signals includes encoding a first and a corresponding second signal representing each of the plurality of content representative signals. A composite signal is generated comprising the plurality of first and second encoded signals. In the composite signal, each respective second encoded signal is delayed with respect to the corresponding first encoded signal. The first and second encoded signal representing a selected one of the content representative signals is extracted to reproduce the selected content representative signal. The extracted first encoded signal is decoded if an error is detected in the extracted second encoded signal, otherwise the extracted second encoded signal is decoded. When a different content representative signal is newly selected, the first extracted encoded signal is decoded until the delayed second extracted encoded signal is available. | 12-16-2010 |
20110019731 | Adaptive weighting of reference pictures in video encoding - A video decoder, encoder, and corresponding methods for processing video signal 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 |
20110019732 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal 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 |
20110019733 | Adaptive weighting of reference pictures in video encoding - A video decoder, encoder, and corresponding methods for processing video signal 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 |
20110019734 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal 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 |
20110019743 | Adaptive 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 |
20110026586 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal 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; | 02-03-2011 |
20110026587 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal 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; | 02-03-2011 |
20110026588 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal 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. | 02-03-2011 |
20110026589 | Adaptive weighting of reference pictures in video encoding - A video decoder, encoder, and corresponding methods for processing video signal 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; | 02-03-2011 |
20110026590 | Adaptive weighting of reference pictures in video decoding - A video decoder, encoder, and corresponding methods for processing video signal 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. | 02-03-2011 |
20110091120 | METHODS AND APPARATUS FOR TEXTURE COMPRESSION USING PATCH-BASED SAMPLING TEXTURE SYNTHESIS - Methods and apparatus are provided for texture compression using patch-based sampling texture synthesis. An apparatus includes an encoder for encoding texture for a picture by synthesizing the texture. The encoder performs texture synthesis using a patch-based sampling method, thus determining “displacement vectors” indicating positions of patches in an input sample texture which are to be synthesized. At the encoder, both the input sample texture and information representing the “displacement vectors” are coded. At the decoder, the new patches are generated by directly using the “displacement vectors”. | 04-21-2011 |
20120229604 | Methods And Systems For Three Dimensional Content Delivery With Flexible Disparity Selection - Methods and systems for delivering three-dimensional content over a network are disclosed. In accordance with the methods and systems, disparity adjustment of three-dimensional video streams can be made by enabling a receiver to dynamically select among several pairs of left & right views in accordance with user-preferences. Further, Multi-view Video Coding methods and systems are disclosed in which the dynamic selection and adjustment is facilitated by configuring dependencies of enhancement views to reference only base views. | 09-13-2012 |
20120249869 | STATMUX METHOD FOR BROADCASTING - A statistical multiplexing method is provided that comprises accessing a plurality of video sequences, wherein the video sequences are each assigned to a unique channel in a common broadcast system; collecting information from a plurality of the unique channels assigned to encode the corresponding video sequences; applying rho-domain analysis to the video sequences; and determining bitrate allocation for the channels responsive to the information collect and the rho-domain analysis. | 10-04-2012 |
20120275519 | ADAPTIVE WEIGHTING OF REFERENCE PICTURES IN VIDEO ENCODING - 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. | 11-01-2012 |
20120314029 | STEREO LOGO INSERTION - A method for inserting a logo into a stereo video image to generate an overlaid stereo image, the method comprising: detecting presence of stereo pictures in the video image and, when stereo pictures are detected, determining the 3D format of said stereo pictures, said 3D format being a stereo spatially multiplexed format; generating a stereo logo comprising stereo spatially multiplexed logo pictures including a representation of the logo, said stereo spatially multiplexed logo pictures being arranged in said 3D format; and combining the stereo logo and the video image to generate the overlaid stereo image in said 3D format. | 12-13-2012 |
20130219440 | APPARATUS AND METHOD FOR SIMULCAST OVER A VARIABLE BANDWIDTH CHANNEL - A method comprising the steps of outputting periodically a schedule for a transmission of a plurality of multimedia contents to a client receiver over a unidirectional data communication channel; transmitting said schedule to said client receiver over said communication channel before said transmission of said plurality of multimedia contents, said schedule including a metadata indicating a plurality of broadcast times for respective ones of said plurality of multimedia contents for selectively activating said client receiver in accordance with said plurality of broadcast times; estimating first and second available bandwidths of said communication channel at respective ones of first and second points in time; selecting one multimedia content file of a given compression level for transmission in response to a change of available bandwidth of said communication channel between said first and second points in time so that said plurality of multimedia contents may be received at said client receiver in accordance with respective ones of said plurality of broadcast times; and transmitting said selected multimedia content file to said client receiver. | 08-22-2013 |
20140205001 | ADAPTIVE WEIGHTING OF REFERENCE PICTURES IN VIDEO ENCODING - 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. | 07-24-2014 |