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公开(公告)号：US10148962B2
公开(公告)日：2018-12-04
申请号：US15880772
申请日：2018-01-26
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 , H04N19/174 , H04N19/61 , H04N19/513 , H04N19/52 , H04N19/70 , H04N19/184 , H04N19/50 , H04N19/132 , H03M7/42 , H04N19/124 , 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：US09930370B2
公开(公告)日：2018-03-27
申请号：US15636476
申请日：2017-06-28
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： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/91 , H03M7/42 , H04N19/52 , H04N19/50 , H04N19/70 , H04N19/13 , H04N19/61 , H04N19/124 , H04N19/513 , 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： 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：US09918104B2
公开(公告)日：2018-03-13
申请号：US15636425
申请日：2017-06-28
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： H04N7/12 , H04N19/52 , H04N19/13 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/61 , H04N19/70
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：US09762913B2
公开(公告)日：2017-09-12
申请号：US15430826
申请日：2017-02-13
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： H04N7/12 , H04N19/13 , H04N19/70 , H04N19/124 , H04N19/184 , H04N19/174
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 includes an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts and updating probability states associated with the different contexts, dependent on previously decoded portions of the data stream; a desymbolizer configured to debinarize the binarizations of the syntax elements to obtain integer values of the syntax elements; a reconstructor configured to reconstruct the video based on the integer values of the syntax elements using a quantization parameter, wherein the entropy decoder is configured to distinguish between 126 probability states and to initialize the probability states associated with the different contexts according to a linear equation of the quantization parameter, wherein the entropy decoder is configured to, for each of the different contexts, derive a slope and an offset of the linear equation from first and second four bit parts of a respective 8 bit initialization value.
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公开(公告)号：US09596469B2
公开(公告)日：2017-03-14
申请号：US14141374
申请日：2013-12-26
IPC分类号： H04N11/02 , H04N19/91 , H04N19/503 , H04N19/13 , H04N19/436 , H03M7/40 , H03M7/30
CPC分类号： H04N19/44 , H03M7/3071 , H03M7/4037 , H04N19/13 , H04N19/167 , H04N19/174 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/91
摘要： The entropy coding of a current part of a predetermined entropy slice is based on, not only, the respective probability estimations of the predetermined entropy slice as adapted using the previously coded part of the predetermined entropy slice, but also probability estimations as used in the entropy coding of a spatially neighboring, in entropy slice order preceding entropy slice at a neighboring part thereof. Thereby, the probability estimations used in entropy coding are adapted to the actual symbol statistics more closely, thereby lowering the coding efficiency decrease normally caused by lower-delay concepts. Temporal interrelationships are exploited additionally or alternatively.
摘要翻译： 预定熵片的当前部分的熵编码不仅基于使用预定熵片的先前编码部分进行适应的预定熵片的各自的概率估计，而且还基于在熵中使用的概率估计 在相邻部分处于熵切片之前的熵片序列中的空间相邻的编码。 由此，在熵编码中使用的概率估计更适合于实际符号统计，从而降低通常由较低延迟概念引起的编码效率降低。 时间相互关系被额外地或替代地利用。
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26.发明授权公开(公告)号：US11997319B2
公开(公告)日：2024-05-28
申请号：US17082385
申请日：2020-10-28
发明人： Thomas Schierl , Valeri George , Karsten Grueneberg , Heiner Kirchhoffer , Anastasia Henkel , Detlev Marpe
IPC分类号： H04N19/91 , H04N19/107 , H04N19/13 , H04N19/169 , H04N19/436 , H04N19/65
CPC分类号： H04N19/91 , H04N19/107 , H04N19/13 , H04N19/169 , H04N19/436 , H04N19/65
摘要： A raw byte sequence payload describing a picture in slices, WPP substreams or tiles and coded using context-adaptive binary arithmetic coding is subdivided into tranches with continuing the context-adaptive binary arithmetic coding probability adaptation across tranche boundaries. Thereby, tranche boundaries additionally introduced within slices, WPP substreams or tiles do not lead to a reduction in the entropy coding efficiency of these entities. However, the tranches are smaller than the original slices, WPP substreams or tiles and accordingly they may be transmitted earlier, i.e. with lower delay, than the un-chopped original entities. According to another aspect combinable with the first aspect, substream marker NAL units are used within a sequence of NAL units of a video bitstream to enable a transport demultiplexer to assign data of slices within NAL units to the corresponding substreams or tiles so as to be able to, in parallel, serve a multi-threaded decoder with the corresponding substreams or tiles.
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公开(公告)号：US11968395B2
公开(公告)日：2024-04-23
申请号：US18188744
申请日：2023-03-23
发明人： Tung Nguyen , Heiner Kirchhoffer , Detlev Marpe
CPC分类号： H04N19/60 , H03M7/4018 , H03M7/4075 , H04N19/91
摘要： An idea used herein is to use the same function for the dependency of the context and the dependency of the symbolization parameter on previously coded/decoded transform coefficients. Using the same function—with varying function parameter—may even be used with respect to different transform block sizes and/or frequency portions of the transform blocks in case of the transform coefficients being spatially arranged in transform blocks. A further variant of this idea is to use the same function for the dependency of a symbolization parameter on previously coded/decoded transform coefficients for different sizes of the current transform coefficient's transform block, different information component types of the current transform coefficient's transform block and/or different frequency portions the current transform coefficient is located within the transform block.
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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：US11695969B2
公开(公告)日：2023-07-04
申请号：US18052616
申请日：2022-11-04
发明人： Heiner Kirchhoffer , Martin Winken , Philipp Helle , Detlev Marpe , Heiko Schwarz , Thomas Wiegand
IPC分类号： H04N19/96 , H04N19/52 , H04N19/46 , H04N19/53 , H04N19/17 , H04N19/59 , H04N19/593 , H04N19/169 , H04N19/61 , H04N19/176
CPC分类号： H04N19/96 , H04N19/17 , H04N19/176 , H04N19/1883 , H04N19/46 , H04N19/52 , H04N19/53 , H04N19/59 , H04N19/593 , H04N19/61
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.
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公开(公告)号：US11178411B2
公开(公告)日：2021-11-16
申请号：US17029130
申请日：2020-09-23
发明人： Heiner Kirchhoffer , Heiko Schwarz , Tung Nguyen , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/18 , H04N19/50 , H04N19/176 , H04N19/70 , H04N19/46 , H04N19/129 , H04N19/136 , H04N19/13 , H04N19/61 , H04N19/91 , H04N19/124 , H04N19/139 , H04N19/51 , H04N19/59
摘要： A higher coding efficiency for coding a significance map indicating positions of significant transform coefficients within a transform coefficient block is achieved by the scan order by which the sequentially extracted syntax elements indicating, for associated positions within the transform coefficient block, as to whether at the respective position a significant or insignificant transform coefficient is situated, are sequentially associated to the positions of the transform coefficient block, among the positions of the transform coefficient block depends on the positions of the significant transform coefficients indicated by previously associated syntax elements. Alternatively, the first-type elements may be context-adaptively entropy decoded using contexts which are individually selected for each of the syntax elements dependent on a number of significant transform coefficients in a neighborhood of the respective syntax element, indicated as being significant by any of the preceding syntax elements.
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