公开(公告)号：US09628827B2

公开(公告)日：2017-04-18

申请号：US15244126

申请日：2016-08-23

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: H04N19/91 ,  H04N19/124 ,  H03M7/42 ,  H04N19/13 ,  H04N19/70

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 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.

公开(公告)号：US09596488B2

公开(公告)日：2017-03-14

申请号：US15195407

申请日：2016-06-28

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: H04N7/32 ,  H04N7/26 ,  H04N19/96 ,  H04N19/53 ,  H04N19/17 ,  H04N19/61 ,  H04N19/169 ,  H04N19/59

CPC classification number: H04N19/96 ,  H04N19/17 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61

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：US20160360239A1

公开(公告)日：2016-12-08

申请号：US15195067

申请日：2016-06-28

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: H04N19/96 ,  H04N19/17 ,  H04N19/593 ,  H04N19/59

CPC classification number: H04N19/96 ,  H04N19/17 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61

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：US20160309188A1

公开(公告)日：2016-10-20

申请号：US15195504

申请日：2016-06-28

Applicant: GE Video Compression, LLC

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

IPC: H04N19/61 ,  H04N19/51 ,  H04N19/59 ,  H04N19/70 ,  H04N19/124 ,  H04N19/18 ,  H04N19/129 ,  H04N19/13 ,  H04N19/176 ,  H04N19/139

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：US12137242B2

公开(公告)日：2024-11-05

申请号：US18363057

申请日：2023-08-01

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: H04N19/50 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/52 ,  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：US11949897B2

公开(公告)日：2024-04-02

申请号：US18160689

申请日：2023-01-27

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Valeri George ,  Anastasia Henkel ,  Heiner Kirchhoffer ,  Detlev Marpe ,  Thomas Schierl

IPC: H04N11/02 ,  H03M7/30 ,  H04N19/13 ,  H04N19/167 ,  H04N19/174 ,  H04N19/436 ,  H04N19/44 ,  H04N19/503 ,  H04N19/51 ,  H04N19/91 ,  H03M7/40

CPC classification number: H04N19/44 ,  H03M7/3071 ,  H04N19/13 ,  H04N19/167 ,  H04N19/174 ,  H04N19/436 ,  H04N19/503 ,  H04N19/51 ,  H04N19/91 ,  H03M7/4037

Abstract: 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.

公开(公告)号：US11838511B2

公开(公告)日：2023-12-05

申请号：US17590596

申请日：2022-02-01

Applicant: GE Video Compression, LLC

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

IPC: 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 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：US11736738B2

公开(公告)日：2023-08-22

申请号：US18052616

申请日：2022-11-04

Applicant: GE VIDEO COMPRESSION, LLC

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

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

CPC classification number: H04N19/96 ,  H04N19/17 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61

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：US11695937B2

公开(公告)日：2023-07-04

申请号：US17065934

申请日：2020-10-08

Applicant: GE Video Compression, LLC

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

IPC: 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 classification number: 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

Abstract: 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.

公开(公告)号：US11653033B2

公开(公告)日：2023-05-16

申请号：US17211013

申请日：2021-03-24

Applicant: GE VIDEO COMPRESSION, LLC

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

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

CPC classification number: H04N19/96 ,  H04N19/17 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61

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.