公开(公告)号：US20200007874A1

公开(公告)日：2020-01-02

申请号：US16568738

申请日：2019-09-12

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 ,  H04N19/129 ,  H04N19/136 ,  H04N19/13 ,  H04N19/61 ,  H04N19/91 ,  H04N19/124 ,  H04N19/139 ,  H04N19/51 ,  H04N19/59

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：US20190394497A1

公开(公告)日：2019-12-26

申请号：US16561427

申请日：2019-09-05

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

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：US20190191183A1

公开(公告)日：2019-06-20

申请号：US16285761

申请日：2019-02-26

Applicant: GE Video Compression, LLC

Inventor： Tung NGUYEN ,  Heiner KIRCHHOFFER ,  Detlev MARPE

IPC: H04N19/60 ,  H04N19/91 ,  H03M7/40

Abstract: 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.

公开(公告)号：US20190037221A1

公开(公告)日：2019-01-31

申请号：US16149906

申请日：2018-10-02

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Heiner KIRCHHOFFER ,  Heiko SCHWARZ ,  Tung NGUYEN ,  Detlev MARPE ,  Thomas WIEGAND

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

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：US20180295369A1

公开(公告)日：2018-10-11

申请号：US16003183

申请日：2018-06-08

Applicant: GE Video Compression, LLC

Inventor： Heiner KIRCHHOFFER ,  Heiko SCHWARZ ,  Tung NGUYEN ,  Detlev MARPE ,  Thomas WIEGAND

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

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：US20180255306A1

公开(公告)日：2018-09-06

申请号：US15972372

申请日：2018-05-07

Applicant: GE Video Compression, LLC

Inventor： Heiner KIRCHHOFFER ,  Heiko SCHWARZ ,  Tung NGUYEN ,  Detlev MARPE ,  Thomas WIEGAND

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

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：US20180220137A1

公开(公告)日：2018-08-02

申请号：US15940820

申请日：2018-03-29

Applicant: GE Video Compression, LLC

Inventor： Heiner KIRCHHOFFER ,  Heiko SCHWARZ ,  Tung NGUYEN ,  Detlev MARPE ,  Thomas WIEGAND

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

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：US20180167640A1

公开(公告)日：2018-06-14

申请号：US15890820

申请日：2018-02-07

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Thomas SCHIERL ,  Valeri GEORGE ,  Karsten GRUENEBERG ,  Heiner KIRCHHOFFER ,  Anastasia HENKEL ,  Detlev MARPE

IPC: H04N19/91 ,  H04N19/436 ,  H04N19/107 ,  H04N19/169 ,  H04N19/65

Abstract: 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.

公开(公告)号：US20180084267A1

公开(公告)日：2018-03-22

申请号：US15824196

申请日：2017-11-28

Applicant: GE Video Compression, LLC

Inventor： Valeri GEORGE ,  Anastasia HENKEL ,  Heiner KIRCHHOFFER ,  Detlev MARPE ,  Thomas SCHIERL

IPC: H04N19/44 ,  H04N19/51 ,  H04N19/174 ,  H04N19/167

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

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：US20170302969A1

公开(公告)日：2017-10-19

申请号：US15642085

申请日：2017-07-05

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 ,  H04N19/70 ,  H04N19/61 ,  H04N19/513 ,  H04N19/124 ,  H04N19/50 ,  H04N19/132 ,  H04N19/13 ,  H03M7/42 ,  H04N19/52

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.