Patent application number | Description | Published |
20080260043 | Device and method for coding a sequence of images in scalable format and corresponding decoding device and method - The invention relates to a method for coding an image data macroblock of a sequence of images presented in the form of a base layer and at least one enhancement layer. The image data macroblock to which corresponds an image data block in the base layer, called a corresponding block, belongs to the enhancement layer. The method comprises the following steps:
| 10-23-2008 |
20080267291 | Method 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 |
20090003445 | Method and Apparatus for Constructing Reference Picture Lists for Scalable Video - In video coding, prediction of P- and B-frames is based on reference frames, which are indicated by reference picture lists. Scalable video coding (SVC) requires this for both, base-layer and enhancement-layer. The invention describes a decoding process for reference picture list construction for spatial enhancement layer. With just one flag of syntax modification, it provides simpler and direct reference lists construction process. By using this, complicated RPLR and other syntaxes can be skipped, and the RPLR process for spatial enhancement layer can also be avoided. The process also can be used as for error concealment when the spatial enhancement layer slice is lost. | 01-01-2009 |
20090028245 | Method 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 |
20090041119 | Method and Device for Coding a Video Image - The method comprises a coding of a source block according to a coding mode wherein the selection of the coding mode is carried out, for a source block, according to coding error estimations and source block coding cost estimations for the different coding modes tested, the coding error being estimated, for a coding mode, according to the sum of the absolute values of coefficients obtained after a mathematical transformation in the frequency domain of the residue block related to this coding mode and as a function of the sum of absolute values of quantized coefficients corresponding to this coding mode. An application is the decision of the coding mode for data using the MPEG 2 or MPEG4-AVC standard. | 02-12-2009 |
20090103615 | Simplified Inter-layer Motion Prediction for Scalable Video Coding - The invention relates to a method for determining for a high layer macroblock that uses inter-layer prediction a partitioning of the macroblock in partitions. It comprises the following steps: —dividing the high layer macroblock in non-overlapping high layer blocks of a predefined size; —determining a corresponding base layer pixel for one pixel, called reference pixel, of each high layer block; —identifying, for each reference pixel, a base layer macroblock to which the corresponding base layer pixel belongs, a base layer partition to which the corresponding base layer pixel belongs in the identified base layer macroblock, a base layer sub-partition to which the corresponding base layer pixel belongs in the identified base layer partition if the sub-partition exists; —deriving, for each of the high layer block, a single value, called Part Info value; and —determining a partitioning of the high layer macroblock in macroblock partitions by comparing between them the Part Info values associated with each of the high layer blocks. | 04-23-2009 |
20090135904 | High-Dynamics Image Transmission System, Encoding and Decoding Units and Methods Therefor - This high dynamic picture transmission system comprises a coding unit able to generate:
| 05-28-2009 |
20090304080 | METHOD FOR CODING AN IMAGE SEQUENCE - The method comprises the steps for the:
| 12-10-2009 |
20090323811 | Method 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 |
20100150229 | Method of Encoding and Decoding Video Images With Spatial Scalability - The invention relates to a method of encoding and decoding video images with spatial scalability. The inventive method comprises the following steps consisting in: encoding ( | 06-17-2010 |
20110026844 | Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images - A method for decoding a stream of coded data representative of a sequence of images divided into blocks is described. It comprises the following steps for a current block:
| 02-03-2011 |
20110080953 | Method 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 |
20110135211 | METHOD FOR MODIFYING A REFERENCE BLOCK OF A REFERENCE IMAGE, METHOD FOR ENCODING OR DECODING A BLOCK OF AN IMAGE BY HELP OF A REFERENCE BLOCK AND DEVICE THEREFORE AND STORAGE MEDIUM OR SIGNAL CARRYING A BLOCK ENCODED BY HELP OF A MODIFIED REFERENCE BLOCK - The invention is related to a method for modifying a reference block of a reference image. That is, the method comprises transforming the reference block into a first set of coefficients, modifying the first set of coefficients by help of one or more weights and inverse transforming the modified first set of coefficients wherein said weights are determined by help of one or more further pixels of the current image and by help of one or more further reference pixels of the reference image. Using further pixels of the current image as well as further reference pixels of the reference image allows spectral weights to be determined such that they reflect fading effects. Especially, if a reference frame consists of two cross-faded frames of which one shall be predicted by help of said reference frame, then, spectral domain weighting allows for separating the relevant of the two frames. | 06-09-2011 |
20110170001 | Method 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 progressive pictures at least one motion predictor and at least one texture predictor from motion data, respectively texture data, associated with the pictures of a sequence of low resolution interlaced pictures. | 07-14-2011 |
20110170599 | METHOD 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 |
20120128068 | METHOD FOR DECODING A STREAM OF CODED DATA REPRESENTATIVE OF A SEQUENCE OF IMAGES AND METHOD FOR CODING A SEQUENCE OF IMAGES - A method for decoding a stream of coded data representative of a sequence of images is disclosed. The decoding method comprises | 05-24-2012 |
20120218131 | METHODS FOR ARITHMETIC CODING AND DECODING - A method for arithmetic coding of symbols in a stream is described. The method comprises the following steps:
| 08-30-2012 |
20120243607 | METHOD FOR IMAGE CODING AND DECODING - A method for coding an image divided into sub-regions is described. The coding method comprises the following steps:
| 09-27-2012 |
20120250764 | PROCESS FOR CODING VIDEO DATA OF A SEQUENCE OF IMAGES - The process comprising splitting of an image into blocks, intra coding of a current block using spatial prediction based on a matching pursuit algorithm selecting, from a dictionary of atoms, the atom the most correlated with a causal neighborhood of the current block, is characterized in that it performs the following steps: determination of the two dimensional shift between the causal neighborhood and the selected atom, generation of at least, a new phased atom taking into account the values of the two dimensional spatial shift, use of this new atom for intra prediction, according to the matching pursuit algorithm, if better correlated than the selected one. Application to video data compression. | 10-04-2012 |
20120269263 | METHOD FOR CODING AND METHOD FOR RECONSTRUCTION OF A BLOCK OF AN IMAGE - A method for coding a current block of an image is disclosed that comprises:
| 10-25-2012 |
20120320982 | METHOD 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 |
20120327999 | Encoding mode values representing prediction modes - A method of encoding a mode value representing a prediction mode comprises selecting from among at least first and second encoding processes an encoding process to apply to the mode value to be encoded. The first encoding process comprises encoding first information indicating a predetermined relationship between the mode value to be encoded and at least one predetermined value. The second encoding process comprises encoding second information representing the mode value to be encoded. The encoding by the second encoding process takes account of the outcome of at least one prior first encoding process. This can be achieved by updating mode probabilities based on the outcome of the first, as well as the second, encoding process. Such a method creates a link between the first and second encoding processes and can improve coding efficiency. | 12-27-2012 |
20130101040 | METHOD FOR CODING A BLOCK OF A SEQUENCE OF IMAGES AND METHOD FOR RECONSTRUCTING SAID BLOCK - A method for coding a current block of a sequence of images is disclosed. The method comprises:
| 04-25-2013 |
20130114706 | METHOD AND APPARATUS FOR PROCESSING COMPONENTS OF AN IMAGE - A method for processing components of an image for coding a sample of the image, the image being composed of a first type of component and a second type of component, wherein samples of the second type of component are predictable from samples of the first type of component using a prediction model, computing one parameter value for use in representing, in the prediction model, the link between the first type of component and the second type of component; detecting, whether or not, one type of error exists in one such computed parameter value of the prediction model and in the case where a first type of error is detected; adapting the computed parameter value to correct for the error detected; and predicting a sample of the second type from a sample of the first type using the prediction model and the adapted parameter value. | 05-09-2013 |
20130136372 | METHOD FOR CODING AND METHOD FOR RECONSTRUCTION OF A BLOCK OF AN IMAGE SEQUENCE AND CORRESPONDING DEVICES - A method for coding a current block is disclosed. The method comprises an iterative step of decomposition into atoms of a first dictionary of a vector of data comprising at least reconstructed image data associated with pixels situated in a causal neighbouring area of a current block. | 05-30-2013 |
20130195181 | METHODS FOR CODING AND DECODING - A method for coding a block of pixels is disclosed. The method comprises the following steps:
| 08-01-2013 |
20130195371 | METHOD FOR CODING AND FOR RECONSTRUCTION OF A BLOCK OF AN IMAGE SEQUENCE AND CORRESPONDING DEVICES - A method for coding a current block is disclosed. The method comprises:
| 08-01-2013 |
20130208807 | METHOD FOR CODING AND METHOD FOR RECONSTRUCTION OF A BLOCK OF AN IMAGE SEQUENCE AND CORRESPONDING DEVICES - A method for decoding a video picture comprising coded structured regions and textured regions is disclosed. A reference texture patch is constituted of a part or of blocks of the structured region found around the textured region and the pixels of the textured region are synthesized sequentially according to a spiral type scanning around the textured region, the causal area being found inside the reference texture patch at least for the first round of synthesis. | 08-15-2013 |
20130208982 | METHOD FOR RECONSTRUCTING A CURRENT BLOCK OF AN IMAGE AND CORRESPONDING ENCODING METHOD, CORRESPONDING DEVICES AS WELL AS STORAGE MEDIUM CARRYING AN IMAGES ENCODED IN A BIT STREAM - The invention is made in the field of image block encoding and reconstruction. A method for reconstructing a current block of an image is described, the current block being encoded using predictive encoding of segments resulting from geometry adaptive block partitioning of said current block. After decoding encoded data comprising at least one flag and motion vectors, wherein blocks referenced by the motion vectors are used for prediction of segments of the current block, the at least one flag and an encoding order of the motion vectors in the encoded data is used for determining which of the referenced blocks exhibits a geometry that matches the geometry of the current block and for determining a segment of the determined block, wherein prior to determining the segment, the determined block is geometry adaptive block partitioned into segments from which the segment is determined for predicting one of the segments of the current block. | 08-15-2013 |
20130243336 | METHOD FOR CODING AND RECONSTRUCTING A PIXEL BLOCK AND CORRESPONDING DEVICES - A method for coding a block of pixels is described. The coding method comprises:
| 09-19-2013 |
20130329786 | METHOD FOR CODING AND RECONSTRUCTING A PIXEL BLOCK AND CORRESPONDING DEVICES - A method for coding a block of pixels is disclosed. The method for coding comprises:
| 12-12-2013 |
20140010306 | METHOD FOR CODING AND DECODING A BLOCK OF PIXELS FROM A MOTION MODEL - A method for coding a current block using a parametric motion model whose parameters are defined from the motion data of the causal neighbourhood is disclosed. Specifically, the method for coding the current block comprises the following steps:
| 01-09-2014 |
20140016874 | METHOD AND DEVICE FOR PREDICTING AN IMAGE PORTION FOR ENCODING OR DECODING OF AN IMAGE - A method of predicting a portion of an image, for encoding or decoding of an image, the image portion being predicted by an intra prediction process with respect to samples of at least one reference image portion of the image, the method comprising deriving samples from at least one reference image portion; generating, from said derived samples, by the intra prediction process, at least one prediction image portion corresponding to the image portion to be predicted; and applying a parametric displacement transformation to at least the derived samples and/or the prediction image portion. A method and device for encoding and a method an device for decoding are also described. | 01-16-2014 |
20140056348 | METHODS AND DEVICE FOR RECONSTRUCTING AND CODING AN IMAGE BLOCK - A method for reconstruction of a current block predicted from at least one reference block is described. The method comprises the steps for:
| 02-27-2014 |
20140092959 | Method and device for deriving a set of enabled coding modes - A method for deriving a set of enabled coding modes relative to the encoding of an image or image portion which forms part of an image sequence. The method comprises:
| 04-03-2014 |
20140177721 | METHOD AND DEVICE FOR DETERMINING RESIDUAL DATA FOR ENCODING OR DECODING AT LEAST PART OF AN IMAGE - A method and device for determining residual data for encoding at least part of an image of an enhancement layer of video data, the video data including the enhancement layer and a base layer, the enhancement layer being composed of processing blocks and the base layer being composed of elementary units each having associated residual data, the method comprising for a processing block of the enhancement layer
| 06-26-2014 |
20140192860 | METHOD, DEVICE, COMPUTER PROGRAM, AND INFORMATION STORAGE MEANS FOR ENCODING OR DECODING A SCALABLE VIDEO SEQUENCE - The invention relates to a method of encoding or decoding a scalable video sequence of frames encoded in a bit-stream made of at least one lower layer and one upper layer, the method comprising:
| 07-10-2014 |
20140192869 | Method, device, computer program, and information storage means for encoding or decoding a video sequence - The invention relates to video coding. A method of encoding or decoding such a video sequence according to the invention comprises: obtaining a reconstructed frame area made of an array of sample values; applying a sample adaptive offset, SAO, filtering to the reconstructed frame area based on SAO parameters; wherein at least one of the SAO parameters is determined independently of the sample values of the reconstructed frame area. Preferably, the sample-independent SAO parameters define an Edge Offset filtering. | 07-10-2014 |
20140192884 | Method and device for processing prediction information for encoding or decoding at least part of an image - A method of processing prediction information for encoding or decoding at least part of an image of an enhancement layer of video data, the video data including the enhancement layer and a base layer, the enhancement layer being composed of processing blocks and the base layer being composed of elementary units each having associated prediction data, the method comprising for a processing block of the enhancement layer: obtaining prediction data of at least a co-located elementary unit of the reference data, the prediction data defining first predictors; and generating, from said prediction data obtained, further predictors for prediction of the current processing block. | 07-10-2014 |
20140192886 | Method and Apparatus for Encoding an Image Into a Video Bitstream and Decoding Corresponding Video Bitstream Using Enhanced Inter Layer Residual Prediction - A method for encoding an image of pixels and for decoding a corresponding bit stream is described. More particularly, it concerns residual prediction according to a spatial scalable encoding scheme. It can be considered in the context of the Scalable extension of the HEVC standard (noted SHVC), being developed by the ISO-MPEG and ITU-T standardization organizations. It is proposed to simplify the computational complexity and the memory usage needed by the GRILP and DIFF inter modes by combining upsampling and motion compensation operations into one single operation and/or reducing the complexity of the linear filtering processes involved in some of the processes and/or adopt some limiting usage of these two modes when combined with bidirectional prediction. Accordingly a reduction of the complexity is achieved with, at worst, a limited loss in coding efficiency. | 07-10-2014 |
20140301487 | METHOD AND DEVICE FOR CLASSIFYING SAMPLES OF AN IMAGE - A method and a device for classifying samples of an image, each sample having a respective sample value the method comprising repartition of each of the samples into a plurality of index classes, wherein the index class allocated to each sample is determined in dependence upon the sample value of the said sample with respect to the sample values of first neighbouring samples of said sample according to a given direction and further in respect to the sample values of the first neighbouring samples with respect to the sample values of samples neighbouring the first neighbouring samples according to the said given direction. Processing each sample according to the respective allocated index class. | 10-09-2014 |
20150010054 | DERIVING REFERENCE MODE VALUES AND ENCODING AND DECODING INFORMATION REPRESENTING PREDICTION MODES - Reference prediction mode values, also referred to as most probable modes, usable for encoding or decoding of a prediction mode related to a current coding unit, are derived. First and second reference prediction mode values are derived (S | 01-08-2015 |