公开(公告)号：US10250913B2

公开(公告)日：2019-04-02

申请号：US15413590

申请日：2017-01-24

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Heiner Kirchhoffer ,  Martin Winken ,  Philipp Helle ,  Detlev Marpe ,  Heiko Schwarz ,  Thomas Wiegand

IPC: H04N19/96 ,  H04N19/17 ,  H04N19/52 ,  H04N19/169 ,  H04N19/46 ,  H04N19/53 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/176

Abstract: 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.

公开(公告)号：US10021404B2

公开(公告)日：2018-07-10

申请号：US15828756

申请日：2017-12-01

Applicant: GE Video Compression, LLC

Inventor： Heiner Kirchhoffer ,  Heiko Schwarz ,  Tung Nguyen ,  Detlev Marpe ,  Thomas Wiegand

IPC: H04N7/32 ,  H04N19/18 ,  H04N19/124 ,  H04N19/139 ,  H04N19/51 ,  H04N19/91 ,  H04N19/50 ,  H04N19/59 ,  H04N19/129 ,  H04N19/13 ,  H04N19/46 ,  H04N19/70 ,  H04N19/176 ,  H04N19/136 ,  H04N19/61

CPC classification number: 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

Abstract: 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.

公开(公告)号：US09998741B2

公开(公告)日：2018-06-12

申请号：US15200300

申请日：2016-07-01

Applicant: GE Video Compression, LLC

Inventor： Heiner Kirchhoffer ,  Heiko Schwarz ,  Tung Nguyen ,  Detlev Marpe ,  Thomas Wiegand

IPC: H04N19/18 ,  H04N19/50 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/13 ,  H04N19/129 ,  H04N19/61 ,  H04N19/136 ,  H04N19/91 ,  H04N19/124 ,  H04N19/139 ,  H04N19/51 ,  H04N19/59

CPC classification number: 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

Abstract: 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.

公开(公告)号：US09918090B2

公开(公告)日：2018-03-13

申请号：US14108173

申请日：2013-12-16

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Valeri George ,  Benjamin Bross ,  Heiner Kirchhoffer ,  Detlev Marpe ,  Tung Nguyen ,  Matthias Preiss ,  Mischa Siekmann ,  Jan Stegemann ,  Thomas Weigand ,  Christian Bartnik

IPC: 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 classification number: H04N19/13 ,  H03M7/42 ,  H04N19/124 ,  H04N19/132 ,  H04N19/174 ,  H04N19/184 ,  H04N19/50 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: 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.

公开(公告)号：US09894368B2

公开(公告)日：2018-02-13

申请号：US13648538

申请日：2012-10-10

Applicant: GE Video Compression, LLC

Inventor： Heiner Kirchhoffer ,  Heiko Schwarz ,  Tung Nguyen ,  Detlev Marpe ,  Thomas Wiegand

IPC: H04N7/32 ,  H04N19/18 ,  H04N19/50 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/13 ,  H04N19/129 ,  H04N19/61 ,  H04N19/136 ,  H04N19/91 ,  H04N19/124 ,  H04N19/139 ,  H04N19/51 ,  H04N19/59

CPC classification number: 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

Abstract: 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.

公开(公告)号：US09788009B2

公开(公告)日：2017-10-10

申请号：US15195609

申请日：2016-06-28

Applicant: GE Video Compression, LLC

Inventor： Heiko Schwarz ,  Heiner Kirchhoffer ,  Philipp Helle ,  Simon Oudin ,  Jan Stegemann ,  Benjamin Bross ,  Detlev Marpe ,  Thomas Wiegand

IPC: H04N19/172 ,  H04N19/52 ,  H04N19/50 ,  H04N19/70 ,  H04N19/176 ,  H04N19/184

CPC classification number: H04N19/52 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50 ,  H04N19/70

Abstract: 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.

公开(公告)号：US09729883B2

公开(公告)日：2017-08-08

申请号：US15238523

申请日：2016-08-16

Applicant: GE Video Compression, LLC

Inventor： Valeri George ,  Benjamin Bross ,  Heiner Kirchhoffer ,  Detlev Marpe ,  Tung Nguyen ,  Matthias Preiss ,  Mischa Siekmann ,  Jan Stegemann ,  Thomas Wiegand

IPC: H04B1/66 ,  H04N19/13 ,  H03M7/42 ,  H04N19/52 ,  H04N19/50 ,  H04N19/70 ,  H04N19/61 ,  H04N19/124 ,  H04N19/513 ,  H04N19/91

CPC classification number: H04N19/13 ,  H03M7/42 ,  H04N19/124 ,  H04N19/132 ,  H04N19/174 ,  H04N19/184 ,  H04N19/50 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: 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.

公开(公告)号：US12155867B2

公开(公告)日：2024-11-26

申请号：US17412171

申请日：2021-08-25

Applicant: GE Video Compression, LLC

Inventor： 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: H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/119 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/33 ,  H04N19/48 ,  H04N19/503 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/615 ,  H04N19/82 ,  H04N19/86 ,  H04N19/11 ,  H04N19/34 ,  H04N19/36 ,  H04N19/463

Abstract: A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.

公开(公告)号：US20240373066A1

公开(公告)日：2024-11-07

申请号：US18660193

申请日：2024-05-09

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： 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: H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/33 ,  H04N19/34 ,  H04N19/36 ,  H04N19/463 ,  H04N19/48 ,  H04N19/503 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/615 ,  H04N19/82 ,  H04N19/86

Abstract: 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.

公开(公告)号：US12010334B2

公开(公告)日：2024-06-11

申请号：US16850588

申请日：2020-04-16

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： 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: H04N19/30 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/119 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/196 ,  H04N19/33 ,  H04N19/34 ,  H04N19/48 ,  H04N19/503 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/615 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/11 ,  H04N19/463

CPC classification number: H04N19/33 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/119 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/198 ,  H04N19/34 ,  H04N19/48 ,  H04N19/503 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/615 ,  H04N19/70 ,  H04N19/82 ,  H04N19/865 ,  H04N19/11 ,  H04N19/463

Abstract: 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.