公开(公告)号：US20180220161A1

公开(公告)日：2018-08-02

申请号：US15928742

申请日：2018-03-22

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Thomas SCHIERL ,  Valeri GEORGE ,  Anastasia HENKEL ,  Detlev MARPE ,  Karsten GRUENEBERG ,  Robert SKUPIN

IPC: H04N19/68 ,  H04N21/4728 ,  H04N19/167 ,  H04N21/2343 ,  H04N21/462 ,  H04N19/174 ,  H04N19/169 ,  H04N19/423 ,  H04N19/436 ,  H04N19/91 ,  H04N19/70 ,  H04N19/67 ,  H04N19/55 ,  H04N19/46 ,  G06F15/173 ,  H04L12/54 ,  H04L12/66 ,  H04L12/801 ,  H04L12/833

Abstract: Decoder retrieval timing information, ROI information and tile identification information are conveyed within a video data stream at a level which allows for an easy access by network entities such as MANEs or decoder. In order to reach such a level, information of such types are conveyed within a video data stream by way of packets interspersed into packets of access units of a video data stream, in accordance with an embodiment, the interspersed packets are of a removable packet type, i.e. the removal of these interspersed packets maintains the decoder's ability to completely recover the video content conveyed via the video data stream.

公开(公告)号：US20180220135A1

公开(公告)日：2018-08-02

申请号：US15940584

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：US20180205953A1

公开(公告)日：2018-07-19

申请号：US15918105

申请日：2018-03-12

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

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：US20180167641A1

公开(公告)日：2018-06-14

申请号：US15890864

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：US20180152708A1

公开(公告)日：2018-05-31

申请号：US15880837

申请日：2018-01-26

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: H04N19/13 ,  H04N19/174 ,  H04N19/61 ,  H04N19/513 ,  H04N19/52 ,  H04N19/70 ,  H04N19/50 ,  H04N19/132 ,  H03M7/42 ,  H04N19/124 ,  H04N19/91 ,  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: 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：US20180019762A1

公开(公告)日：2018-01-18

申请号：US15717579

申请日：2017-09-27

Applicant: GE Video Compression, LLC

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

IPC: H03M7/00

CPC classification number: H03M7/00 ,  H03M7/40 ,  H03M7/4006 ,  H03M7/46

Abstract: Decomposing a value range of the respective syntax elements into a sequence of n partitions with coding the components of z laying within the respective partitions separately with at least one by VLC coding and with at least one by PIPE or entropy coding is used to greatly increase the compression efficiency at a moderate coding overhead since the coding scheme used may be better adapted to the syntax element statistics. Accordingly, syntax elements are decomposed into a respective number n of source symbols si with i=1 . . . n, the respective number n of source symbols depending on as to which of a sequence of n partitions into which a value range of the respective syntax elements is sub-divided, a value z of the respective syntax elements falls into, so that a sum of values of the respective number of source symbols si yields z, and, if n>1, for all i=1 . . . n−1, the value of si corresponds to a range of the ith partition.

公开(公告)号：US20180007391A1

公开(公告)日：2018-01-04

申请号：US15707467

申请日：2017-09-18

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp HELLE ,  Detlev MARPE ,  Simon OUDIN ,  Thomas WIEGAND

IPC: H04N19/96 ,  H04N19/593 ,  H04N19/53 ,  H04N19/52 ,  H04N19/513 ,  H04N19/463 ,  H04N19/124 ,  H04N19/42 ,  H04N19/30 ,  H04N19/176 ,  H04N19/159 ,  H04N19/13 ,  H04N19/129 ,  H04N19/44 ,  H04N19/70

CPC classification number: H04N19/96 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30 ,  H04N19/439 ,  H04N19/44 ,  H04N19/463 ,  H04N19/513 ,  H04N19/52 ,  H04N19/53 ,  H04N19/593 ,  H04N19/70

Abstract: A better compromise between encoding complexity and achievable rate distortion ratio, and/or to achieve a better rate distortion ratio is achieved by using multitree sub-divisioning not only in order to subdivide a continuous area, namely the sample array, into leaf regions, but using the intermediate regions also to share coding parameters among the corresponding collocated leaf blocks. By this measure, coding procedures performed in tiles—leaf regions—locally, may be associated with coding parameters individually without having to, however, explicitly transmit the whole coding parameters for each leaf region separately. Rather, similarities may effectively exploited by using the multitree subdivision.

公开(公告)号：US20170366810A1

公开(公告)日：2017-12-21

申请号：US15674150

申请日：2017-08-10

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

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：US20170332093A1

公开(公告)日：2017-11-16

申请号：US15657813

申请日：2017-07-24

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp MERKLE ,  Christian BARTNIK ,  Haricharan LAKSHMAN ,  Detlev MARPE ,  Karsten MUELLER ,  Thomas WIEGAND ,  Gerhard TECH

IPC: H04N19/51 ,  H04N19/82 ,  H04N19/70 ,  H04N19/597 ,  H04N19/593 ,  H04N19/105 ,  H04N19/196 ,  H04N19/176 ,  H04N19/157 ,  H04N19/46 ,  H04N19/119 ,  H04N19/96 ,  H04N19/52 ,  H04N19/14

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/119 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96

Abstract: In accordance with a first aspect, the intra prediction direction of a neighboring, intra-predicted block is used in order to predict the extension direction of the wedgelet separation line of a current block, thereby reducing the side information rate necessitated in order to convey the partitioning information. In accordance with a second aspect, the idea is that previously reconstructed samples, i.e. reconstructed values of blocks preceding the current block in accordance with the coding/decoding order allow for at least a prediction of a correct placement of a starting point of the wedgelet separation line, namely by placing the starting point of the wedgelet separation line at a position of a maximum change between consecutive ones of a sequence of reconstructed values of samples of a line of samples extending adjacent to the current block along a circumference thereof. Both aspects may be used individually or in combination.

公开(公告)号：US20170332086A1

公开(公告)日：2017-11-16

申请号：US15663212

申请日：2017-07-28

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp MERKLE ,  Christian BARTNIK ,  Haricharan LAKSHMAN ,  Detlev MARPE ,  Karsten MUELLER ,  Thomas WIEGAND ,  Gerhard TECH

IPC: H04N19/176 ,  H04N19/82 ,  H04N19/70 ,  H04N19/597 ,  H04N19/593 ,  H04N19/103 ,  H04N19/196 ,  H04N19/157 ,  H04N19/44 ,  H04N19/119 ,  H04N19/105 ,  H04N19/96 ,  H04N19/46 ,  H04N19/14

CPC classification number: H04N19/176 ,  H04N19/103 ,  H04N19/105 ,  H04N19/119 ,  H04N19/14 ,  H04N19/157 ,  H04N19/196 ,  H04N19/23 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96

Abstract: Although wedgelet-based partitioning seems to represent a better tradeoff between side information rate on the one hand and achievable variety in partitioning possibilities on the other hand, compared to contour partitioning, the ability to alleviate the constraints of the partitioning to the extent that the partitions have to be wedgelet partitions, enables applying relatively uncomplex statistical analysis onto overlaid spatially sampled texture information in order to derive a good predictor for the bi-segmentation in a depth/disparity map. Thus, in accordance with a first aspect it is exactly the increase of the freedom which alleviates the signaling overhead provided that co-located texture information in form of a picture is present. Another aspect pertains the possibility to save side information rate involved with signaling a respective coding mode supporting irregular partitioning.