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1. 发明公开

EP4407996A3 ENTROPY CODING OF MOTION VECTOR DIFFERENCES 审中-实审
公开(公告)号：EP4407996A3
公开(公告)日：2024-10-30
申请号：EP24166608.0
申请日：2012-06-18
申请人： GE Video Compression, LLC
发明人： GEORGE, Valeri , BROSS, Benjamin , KIRCHHOFFER, Heiner , MARPE, Detlev , NGUYEN, Tung , PREISS, Matthias , SIEKMANN, Mischa , STEGEMANN, Jan , WIEGAND, Thomas
IPC分类号： H04N19/50 , H04N19/513 , H03M7/42 , H04N19/13 , H04N19/91
CPC分类号： H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/13
摘要： A decoder for decoding a video from a data stream into which horizontal and vertical components of motion vector differences are coded using binarizations of the horizontal and vertical components is described, the binarizations equaling a truncated unary code of the horizontal and vertical components, respectively, within a first interval of the domain of the horizontal and vertical components below a cutoff value, and a combination of a prefix in form of the truncated unary code for the cutoff value and a suffix in form of a Exp-Golomb code of the horizontal and vertical components, respectively, within a second interval of the domain of the horizontal and vertical components inclusive and above the cutoff value, wherein the cutoff value is two and the Exp-Golomb code has order one. An entropy decoder is configured to, for the horizontal and vertical components of the motion vector differences, derive the truncated unary code from the data stream using context-adaptive binary entropy decoding with exactly one context per bin position of the truncated unary code, which is common for the horizontal and vertical components of the motion vector differences, and the Exp-Golomb code using a constant equi-probability bypass mode to obtain the binarizations of the motion vector differences. A desymbolizer is configured to debinarize the binarizations of the motion vector difference syntax elements to obtain integer values of the horizontal and vertical components of the motion vector differences; A reconstructor is configured to reconstruct the video based on the integer values of the horizontal and vertical components of the motion vector differences.

2. 发明公开

EP4407986A3 INHERITANCE IN SAMPLE ARRAY MULTITREE SUBDIVISION 审中-实审
公开(公告)号：EP4407986A3
公开(公告)日：2024-10-23
申请号：EP24167381.3
申请日：2011-04-13
申请人： GE Video Compression, LLC
发明人： HELLE, Philipp , MARPE, Detlev , OUDIN, Simon , WIEGAND, Thomas
IPC分类号： H04N19/463 , H04N19/52 , H04N19/96 , H04N19/53 , H04N19/593
CPC分类号： H04N19/52 , H04N19/53 , H04N19/593 , H04N19/463 , H04N19/96
摘要： A better compromise between encoding complexity and achievable rate distortion ratio, and/or to achieve a better rate distortion ratio is achieved by using multitree subdivisioning not only in order to subdivide a continuous area, namely the sample array, into leaf regions, but using the intermediate regions also to share coding parameters among the corresponding collocated leaf blocks. By this measure, coding procedures performed in tiles - leaf regions - locally, may be associated with coding parameters individually without having to, however, explicitly transmit the whole coding parameters for each leaf region separately. Rather, similarities may effectively exploited by using the multitree subdivision.

3. 发明公开

EP4398574A2 VIDEO CODING USING MULTI-TREE SUB-DIVISIONS OF IMAGES 审中-实审
公开(公告)号：EP4398574A2
公开(公告)日：2024-07-10
申请号：EP24162720.7
申请日：2011-04-08
申请人： GE Video Compression, LLC
发明人： MARPE, Detlev , SCHWARZ, Heiko , KIRCHHOFFER, Heiner , WINKEN, Martin , HELLE, Philipp , WIEGAND, Thomas
IPC分类号： H04N19/70
CPC分类号： H04N19/46 , H04N19/96 , H04N19/119 , H04N19/176 , H04N19/70
摘要： Coding schemes for coding a spatially sampled information signal using sub-division and coding schemes for coding a sub-division or a multitree structure are described, wherein representative embodiments relate to picture and/or video coding applications.

4. 发明公开

EP4398571A2 PICTURE CODING SUPPORTING BLOCK MERGING AND SKIP MODE 审中-实审
公开(公告)号：EP4398571A2
公开(公告)日：2024-07-10
申请号：EP24163026.8
申请日：2011-11-04
申请人： GE Video Compression, LLC
发明人： SCHWARZ, Heiko , KIRCHHOFFER, Heiner , HELLE, Philipp , OUDIN, Simon , STEGEMANN, Jan , BROSS, Benjamin , MARPE, Detlev , WIEGAND, Thomas
IPC分类号： H04N19/176
CPC分类号： H04N19/70 , H04N19/103 , H04N19/159 , H04N19/176 , H04N19/13
摘要： A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to both activation of merging and activation of the skip mode. That is, one of the possible states of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the respective sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. Alternatively speaking, a common flag may commonly signalize whether the coding parameters associated with a current sample set are to be set according to a merge candidate or to be retrieved from the bitstream, and whether the current sample set of the picture is to be reconstructed merely based on a prediction signal depending on the coding parameters associated with the current sample set, without any residual data, or to be reconstructed by refining the prediction signal depending on the coding parameters associated with the current sample set by means of residual data within the bitstream.

5. 发明公开

EP4161078A1 EFFECTIVE WEDGELET PARTITION CODING USING SPATIAL PREDICTION 审中-实审
公开(公告)号：EP4161078A1
公开(公告)日：2023-04-05
申请号：EP22187026.4
申请日：2012-11-09
申请人： GE Video Compression, LLC
发明人： MERKLE, Philipp , BARTNIK, Christian , LAKSHMAN, Haricharan , MARPE, Detlev , MÜLLER, Karsten , WIEGAND, Thomas , TECH, Gerhard
IPC分类号： H04N19/91 , H04N19/119 , H04N19/157 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/593 , H04N19/70 , H04N19/96
摘要： In accordance with a first aspect, the intra prediction direction of a neighboring, intra-predicted block is used in order to predict the extension direction of the wedgelet separation line of a current block, thereby reducing the side information rate necessary in order to convey the partitioning information. In accordance with a second aspect, the idea is that previously reconstructed samples, i.e. reconstructed values of blocks preceding the current block in accordance with the coding/decoding order allow for at least a prediction of a correct placement of a starting point of the wedgelet separation line, namely by placing the starting point of the wedgelet separation line at a position of a maximum change between consecutive ones of a sequence of reconstructed values of samples of a line of samples extending adjacent to the current block along a circumference thereof. Both aspects may be used individually or in combination.

6. 发明公开

EP3846468A1 SCALABLE VIDEO CODING USING BASE-LAYER HINTS FOR ENHANCEMENT LAYER MOTION PARAMETERS 审中-实审
公开(公告)号：EP3846468A1
公开(公告)日：2021-07-07
申请号：EP20211111.8
申请日：2013-10-01
申请人： GE Video Compression, LLC
发明人： HINZ, Tobias , LAKSHMAN, Haricharan , STEGEMANN, Jan , HELLE, Philipp , SIEKMANN, Mischa , SÜHRING, Karsten , MARPE, Detlev , SCHWARZ, Heiko , BARTNIK, Christian , KHAIRAT ABDELHAMID, Ali Atef Ibrahim , KIRCHHOFFER, Heiner , WIEGAND, Thomas
IPC分类号： H04N19/105 , H04N19/119 , H04N19/117 , H04N19/157 , H04N19/187 , H04N19/82 , H04N19/33
摘要： Information available from coding/decoding the base layer, i.e. base-layer hints, is exploited to render the motion-compensated prediction of the enhancement layer more efficient by more efficiently coding the enhancement layer motion parameters.

7. 发明授权

EP3487179B1 CODING OF SIGNIFICANCE MAPS AND TRANSFORM COEFFICIENT BLOCKS 有权转让
公开(公告)号：EP3487179B1
公开(公告)日：2020-07-15
申请号：EP18211094.0
申请日：2011-04-11
申请人： GE Video Compression, LLC
发明人： KIRCHHOFFER, Heiner , SCHWARZ, Heiko , NGUYEN, Tung , MARPE, Detlev , WIEGAND, Thomas
IPC分类号： H04N19/50 , H04N19/70 , H04N19/46 , H04N19/51 , H04N19/91 , H04N19/18 , H04N19/59 , H04N19/139 , H04N19/176 , H04N19/129 , H04N19/124 , H04N19/136 , H04N19/13 , H04N19/61

8. 发明公开

EP3661199A1 HYBRID VIDEO CODING SUPPORTING INTERMEDIATE VIEW SYNTHESIS 审中-实审转让
公开(公告)号：EP3661199A1
公开(公告)日：2020-06-03
申请号：EP19204594.6
申请日：2010-07-15
申请人： GE Video Compression, LLC
发明人： WIEGAND, Thomas , MÜLLER, Karsten , MERKLE, Philipp
IPC分类号： H04N13/00 , H04N19/597 , H04N19/105 , H04N19/177 , H04N19/17 , H04N19/567 , H04N19/513 , H04N19/172 , H04N19/46 , H04N19/61 , H04N19/11 , H04N19/109
摘要： Hybrid video decoder supporting intermediate view synthesis of an intermediate view video from a first- and a second- view video which are predictively coded into a multi-view data signal with frames of the second-view video being spatially subdivided into sub-regions and the multi-view data signal having a prediction mode out of a set of possible prediction modes, associated with each of the sub-regions, wherein the set of possible prediction modes comprises at least an inter-view prediction mode and an intra-view prediction mode, the hybrid video decoder comprising: an extractor configured to respectively extract, from the multi-view data signal, for sub-regions of the frames of the second-view video with which the inter-view prediction mode is associated, a disparity vector and a prediction residual; a predictive reconstructor configured to reconstruct the sub-regions of the frames of the second-view video with which the inter-view prediction mode is associated, by generating a prediction from a reconstructed version of a portion of frames of the first-view video using the disparity vectors extracted from the multi-view data signals for the respective sub-regions, and a prediction residual for the respective sub-regions; and an intermediate view synthesizer configured to reconstruct first portions of the intermediate view video using the reconstructed version of the portions of the frames of the first-view video, and disparity vectors extracted from the multi-view data signal.

9. 发明公开

EP3657795A1 EFFICIENT MULTI-VIEW CODING USING DEPTH-MAP ESTIMATE AND UPDATE 审中-实审转让
公开(公告)号：EP3657795A1
公开(公告)日：2020-05-27
申请号：EP19195133.4
申请日：2012-11-09
申请人： GE Video Compression, LLC
发明人： SCHWARZ, Heiko , WIEGAND, Thomas
IPC分类号： H04N19/194 , H04N19/46 , H04N19/52 , H04N19/597
摘要： The missing of a depth map for a current picture of a reference view - due to the transmission thereof being not anticipated anyway, or due to the preferred coding order between a texture/picture and its depth map, or due an anticipated discarding of depth data from the bitstream during transmission or decoding - may be adequately addressed so as to reduce inter-view redundancies by estimating a depth map for the pictures of the reference and dependent views and updating same using motion and/or disparity data signaled within the multi-view data stream. In particular, virtually all multi-view data streams have random access points defined therein, i.e. time instances corresponding to pictures of the views of the multi-view signal which are coded without temporal prediction and other dependencies to previously coded pictures, but merely using intra prediction as far as the reference view is concerned, and intra prediction as well as disparity-based prediction as far as the dependent view is concerned. Accordingly, the disparity data signaled within the multi-view data stream for inter-view prediction is exploited to initialize a depth map estimate for the dependent view, and this primary depth map estimate is consecutively updated during the further course of the multi-view coding using motion data and/or disparity data signal within the multi-view data stream. The thus obtained depth map estimate continuously updated, enables the dependent various methods of inter-view redundancy reduction to be performed in a more efficient way than without having access to this depth map estimate. According to another aspect, the following discovery is exploited: the overhead associated with an enlarged list of motion predictor candidates for a block of a picture of a dependent view is comparatively low compared to a gain in motion vector prediction quality resulting from an adding of a motion vector candidate which is determined from an, in disparity-compensated sense, co-located block of a reference view.

10. 发明公开

EP3657788A1 EFFECTIVE PREDICTION USING PARTITION CODING 有权转让
公开(公告)号：EP3657788A1
公开(公告)日：2020-05-27
申请号：EP19203323.1
申请日：2012-11-09
申请人： GE Video Compression, LLC
发明人： MERKLE, Philipp , BARTNIK, Christian , LAKSHMAN, Haricharan , MARPE, Detlev , MÜLLER, Karsten , WIEGAND, Thomas , TECH, Gerhard
IPC分类号： H04N19/105 , H04N19/119 , H04N19/157 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/593 , H04N19/597 , H04N19/70 , H04N19/82 , H04N19/96
摘要： The way of predicting a current block by assigning constant partition values to the partitions of a bi-partitioning of a block is quite effective, especially in case of coding sample arrays such as depth/disparity maps where the content of these sample arrays is mostly composed of plateaus or simple connected regions of similar value separated from each other by steep edges. The transmission of such constant partition values would, however, still need a considerable amount of side information which should be avoided. This side information rate may be further reduced if mean values of values of neighboring samples associated or adjoining the respective partitions are used as predictors for the constant partition values.

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