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公开(公告)号：US11785246B2
公开(公告)日：2023-10-10
申请号：US17027168
申请日：2020-09-21
发明人： Heiko Schwarz , Heiner Kirchhoffer , Philipp Helle , Simon Oudin , Jan Stegemann , Benjamin Bross , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/52 , H04N19/50 , H04N19/70 , H04N19/172 , H04N19/176 , H04N19/184
CPC分类号： H04N19/52 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/50 , H04N19/70
摘要： A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may 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 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.
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公开(公告)号：US20210021842A1
公开(公告)日：2021-01-21
申请号：US17038777
申请日：2020-09-30
发明人： Philipp Helle , Heiko Schwarz , Detlev Marpe , Thomas Wiegand , Simon Oudin , Benjamin Bross
IPC分类号： H04N19/176 , H04N19/119 , H04N19/61 , H04N19/196 , H04N19/46 , H04N19/147 , H04N19/93 , H04N19/70
摘要： A further coding efficiency increase may be achieved if for a current block of a picture, for which the bit stream signals one of supported partitioning patterns, a reversal of the partitioning by block merging is avoided. In particular, if the signaled one of the supported partitioning patterns specifies a subdivision of the block into two or more further blocks, a removal of certain coding parameter candidates for all further blocks, except a first further block of the further blocks in a coding order, is performed. Particularly, those coding parameter candidates are removed from the set of coding parameter candidates for the respective further block, the coding parameters of which are the same as coding parameters associated with any of the further blocks which, when being merged with the respective further block, would result in one of the supported partitioning pattern. This avoids redundancy between partitioning coding and merging coding.
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公开(公告)号：US10812811B2
公开(公告)日：2020-10-20
申请号：US16837561
申请日：2020-04-01
发明人： Philipp Helle , Heiko Schwarz , Detlev Marpe , Thomas Wiegand , Simon Oudin , Benjamin Bross
IPC分类号： H04N19/176 , H04N19/196 , H04N19/119 , H04N19/46 , H04N19/93 , H04N19/70 , H04N19/147 , H04N19/61
摘要： A further coding efficiency increase may be achieved if for a current block of a picture, for which the bit stream signals one of supported partitioning patterns, a reversal of the partitioning by block merging is avoided. In particular, if the signaled one of the supported partitioning patterns specifies a subdivision of the block into two or more further blocks, a removal of certain coding parameter candidates for all further blocks, except a first further block of the further blocks in a coding order, is performed. Particularly, those coding parameter candidates are removed from the set of coding parameter candidates for the respective further block, the coding parameters of which are the same as coding parameters associated with any of the further blocks which, when being merged with the respective further block, would result in one of the supported partitioning pattern. This avoids redundancy between partitioning coding and merging coding.
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公开(公告)号：US10382777B2
公开(公告)日：2019-08-13
申请号：US16007084
申请日：2018-06-13
发明人： Heiko Schwarz , Heiner Kirchhoffer , Philipp Helle , Simon Oudin , Jan Stegemann , Benjamin Bross , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/50 , H04N19/52 , H04N19/70 , H04N19/172 , H04N19/176 , H04N19/184
摘要： A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may 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 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.
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公开(公告)号：US10306232B2
公开(公告)日：2019-05-28
申请号：US16103266
申请日：2018-08-14
发明人： Valeri George , Benjamin Bross , Heiner Kirchhoffer , Detlev Marpe , Tung Nguyen , Matthias Preiss , Mischa Siekmann , Jan Stegemann , Thomas Wiegand
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02 , H04N11/04 , H04N19/13 , H03M7/42 , H04N19/124 , H04N19/61 , H04N19/70 , H04N19/50 , H04N19/184 , H04N19/174 , H04N19/91 , H04N19/513 , H04N19/132 , H04N19/52
摘要： An entropy decoder is configured to, for horizontal and vertical components of motion vector differences, derive a 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 horizontal and vertical components of the motion vector differences, and an 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 a video based on the integer values of the horizontal and vertical components of the motion vector differences.
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公开(公告)号：US09918090B2
公开(公告)日：2018-03-13
申请号：US14108173
申请日：2013-12-16
发明人： Valeri George , Benjamin Bross , Heiner Kirchhoffer , Detlev Marpe , Tung Nguyen , Matthias Preiss , Mischa Siekmann , Jan Stegemann , Thomas Weigand , Christian Bartnik
IPC分类号： H04N7/12 , H04N19/13 , H03M7/42 , H04N19/52 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184
CPC分类号： H04N19/13 , H03M7/42 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/91
摘要： A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode. In another aspect, a desymbolizer is configured to perform desymbolization such that the control parameter varies in accordance with the data stream at a first rate in case of the high-efficiency mode being activated and the control parameter is constant irrespective of the data stream or changes depending on the data stream, but at a second lower rate in case of the low-complexity mode being activated.
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公开(公告)号：US09788009B2
公开(公告)日：2017-10-10
申请号：US15195609
申请日：2016-06-28
发明人： Heiko Schwarz , Heiner Kirchhoffer , Philipp Helle , Simon Oudin , Jan Stegemann , Benjamin Bross , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/172 , H04N19/52 , H04N19/50 , H04N19/70 , H04N19/176 , H04N19/184
CPC分类号： H04N19/52 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/50 , H04N19/70
摘要： A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may 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 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.
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公开(公告)号：US09729883B2
公开(公告)日：2017-08-08
申请号：US15238523
申请日：2016-08-16
发明人： Valeri George , Benjamin Bross , Heiner Kirchhoffer , Detlev Marpe , Tung Nguyen , Matthias Preiss , Mischa Siekmann , Jan Stegemann , Thomas Wiegand
IPC分类号： H04B1/66 , H04N19/13 , H03M7/42 , H04N19/52 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H04N19/513 , H04N19/91
CPC分类号： H04N19/13 , H03M7/42 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/91
摘要： An entropy decoder is configured to, for horizontal and vertical components of motion vector differences, derive a 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 horizontal and vertical components of the motion vector differences, and an 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 a video based on the integer values of the horizontal and vertical components of the motion vector differences.
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公开(公告)号：US20240048708A1
公开(公告)日：2024-02-08
申请号：US18482683
申请日：2023-10-06
发明人： Valeri George , Benjamin Bross , Heiner Kirchhoffer , Detlev Marpe , Tung Nguyen , Matthias Preiss , Mischa Siekmann , Jan Stegemann , Thomas Wiegand , Christian Bartnik
IPC分类号： H04N19/13 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H03M7/42 , H04N19/52 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184
CPC分类号： H04N19/13 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H03M7/42 , H04N19/52 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184
摘要： A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode. In another aspect, a desymbolizer is configured to perform desymbolization such that the control parameter varies in accordance with the data stream at a first rate in case of the high-efficiency mode being activated and the control parameter is constant irrespective of the data stream or changes depending on the data stream, but at a second lower rate in case of the low-complexity mode being activated.
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公开(公告)号：US11721103B2
公开(公告)日：2023-08-08
申请号：US17840269
申请日：2022-06-14
发明人： Robert Skupin , Cornelius Hellge , Benjamin Bross , Thomas Schierl , Yago Sánchez De La Fuente , Karsten Suehring , Thomas Wiegand
摘要： A concept for a video data stream extraction is presented which is more efficient namely which is, for example, able to more efficiently deal with video content of a type unknown to the recipient with videos of different type differing, for instance, in view-port-to-picture-plane projection, etc., or which lessens the extraction process complexity. Further, a concept is described using which a juxtaposition of different versions of a video scene, the versions differing in scene resolution, may be provided more efficiently to a recipient.
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