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公开(公告)号：US20160360239A1
公开(公告)日：2016-12-08
申请号：US15195067
申请日：2016-06-28
发明人： Heiner Kirchhoffer , Martin Winken , Philipp Helle , Detlev Marpe , Heiko Schwarz , Thomas Wiegand
IPC分类号： H04N19/96 , H04N19/17 , H04N19/593 , H04N19/59
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：US20160309188A1
公开(公告)日：2016-10-20
申请号：US15195504
申请日：2016-06-28
发明人： Heiner Kirchhoffer , Heiko Schwarz , Tung Nguyen , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/61 , H04N19/51 , H04N19/59 , H04N19/70 , H04N19/124 , H04N19/18 , H04N19/129 , H04N19/13 , H04N19/176 , H04N19/139
CPC分类号： H04N19/18 , H04N19/124 , H04N19/129 , H04N19/13 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/46 , H04N19/50 , H04N19/51 , H04N19/59 , H04N19/61 , H04N19/70 , H04N19/91
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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公开(公告)号：US11949897B2
公开(公告)日：2024-04-02
申请号：US18160689
申请日：2023-01-27
IPC分类号： H04N11/02 , H03M7/30 , H04N19/13 , H04N19/167 , H04N19/174 , H04N19/436 , H04N19/44 , H04N19/503 , H04N19/51 , H04N19/91 , H03M7/40
CPC分类号： H04N19/44 , H03M7/3071 , H04N19/13 , H04N19/167 , H04N19/174 , H04N19/436 , H04N19/503 , H04N19/51 , H04N19/91 , H03M7/4037
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.
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公开(公告)号：US11838511B2
公开(公告)日：2023-12-05
申请号：US17590596
申请日：2022-02-01
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 , 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：US11736738B2
公开(公告)日：2023-08-22
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：US11695937B2
公开(公告)日：2023-07-04
申请号：US17065934
申请日：2020-10-08
IPC分类号： H04N19/159 , H04N19/597 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/147 , H04N19/46 , H04N19/196 , H04N19/61 , H04N19/96 , H04N19/103 , H04N19/463 , H04N19/186
CPC分类号： H04N19/159 , H04N19/103 , H04N19/119 , H04N19/147 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/597 , H04N19/61 , H04N19/70 , H04N19/96
摘要： A better rate distortion ratio is achieved by making interrelationships between coding parameters of different planes available for exploitation for the aim of redundancy reduction despite the additional overhead resulting from the need to signal the inter-plane prediction information to the decoder. In particular, the decision to use inter plane prediction or not may be performed for a plurality of planes individually. Additionally or alternatively, the decision may be done on a block basis considering one secondary plane.
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公开(公告)号：US11653033B2
公开(公告)日：2023-05-16
申请号：US17211013
申请日：2021-03-24
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：US11595675B2
公开(公告)日：2023-02-28
申请号：US17210026
申请日：2021-03-23
IPC分类号： H04N11/02 , H04N19/44 , H03M7/30 , H04N19/13 , H04N19/503 , H04N19/91 , H04N19/436 , H04N19/167 , H04N19/174 , H04N19/51 , H03M7/40
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.
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89.发明授权公开(公告)号：US11589062B2
公开(公告)日：2023-02-21
申请号：US16867181
申请日：2020-05-05
发明人： Tobias Hinz , Haricharan Lakshman , Jan Stegemann , Philipp Helle , Mischa Siekmann , Karsten Suehring , Detlev Marpe , Heiko Schwarz , Christian Bartnik , Ali Atef Ibrahim Khairat Abdelhamid , Heiner Kirchhoffer , Thomas Wiegand
IPC分类号： H04N19/117 , H04N19/33 , H04N19/105 , H04N19/157 , H04N19/187 , H04N19/82 , H04N19/136 , H04N19/159 , H04N19/34 , H04N19/119 , H04N19/587 , H04N19/59 , H04N19/18 , H04N19/48 , H04N19/61 , H04N19/70 , H04N19/86 , H04N19/107 , H04N19/137 , H04N19/176 , H04N19/196 , H04N19/503 , H04N19/593 , H04N19/615 , H04N19/11 , H04N19/463
摘要： A subblock-based coding of transform coefficient blocks of the enhancement layer is rendered more efficient. To this end, the subblock subdivision of the respective transform coefficient block is controlled on the basis of the base layer residual signal or the base layer signal. In particular, by exploiting the respective base layer hint, the subblocks may be made longer along a spatial frequency axis transverse to edge extensions observable from the base layer residual signal or the base layer signal.
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公开(公告)号：US11297336B2
公开(公告)日：2022-04-05
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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