公开(公告)号：US10341668B2

公开(公告)日：2019-07-02

申请号：US16198170

申请日：2018-11-21

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 ,  H04N19/136 ,  H04N19/61 ,  H04N19/129 ,  H04N19/13 ,  H04N19/46 ,  H04N19/70 ,  H04N19/176 ,  H04N19/50

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：US10306232B2

公开(公告)日：2019-05-28

申请号：US16103266

申请日：2018-08-14

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 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/13 ,  H03M7/42 ,  H04N19/124 ,  H04N19/61 ,  H04N19/70 ,  H04N19/50 ,  H04N19/184 ,  H04N19/174 ,  H04N19/91 ,  H04N19/513 ,  H04N19/132 ,  H04N19/52

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：US20190158838A1

公开(公告)日：2019-05-23

申请号：US16256128

申请日：2019-01-24

Applicant: GE Video Compression, LLC

Inventor： Philipp MERKLE ,  Detlev Marpe ,  Karsten Mueller

IPC: H04N19/13 ,  H04N19/91 ,  H04N19/176 ,  H04N19/119 ,  H04N19/463

Abstract: Wedgelet-based coding for coding blocks of varying size is rendered more efficient by the usage of a variable length coded syntax element having a prefix and a suffix, wherein the size of the suffix is dependent on the prefix and the size of the current coding block. By this measure, it is feasible to efficiently adapt the length of the variable-length coded syntax element which controls the bi-partitioning of the current coding block to the actual needs, namely the size, of the current coding block, and the variability of the bi-partitioning by varying the wedglet separation line, respectively. The greater the current coding block is, the longer the variable-length coded syntax element may be. This length dependency may even be sufficiently effective in terms of coding efficiency so that the variable length coded syntax element may be coded without context-adaptive entropy coding, but directly or using fixed-equal-probability binary entropy coding.

公开(公告)号：US10271068B2

公开(公告)日：2019-04-23

申请号：US15948085

申请日：2018-04-09

Applicant: GE Video Compression, LLC

Inventor： Tung Nguyen ,  Heiner Kirchhoffer ,  Detlev Marpe

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

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：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：US10237567B2

公开(公告)日：2019-03-19

申请号：US14875743

申请日：2015-10-06

Applicant: GE Video Compression, LLC

Inventor： Tung Nguyen ,  Ali Atef Ibrahim Khairat Abdelhamid ,  Detlev Marpe

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/50 ,  H04N19/186 ,  H04N19/176 ,  H04N19/597 ,  H04N19/503 ,  H04N19/96 ,  H04N19/593

Abstract: Reconstructing a second component signal relating to a second component of a multi-component picture from a spatially corresponding portion of a reconstructed first component signal and a correction signal derived from a data stream for the second component promises increased coding efficiency over a broader range of multi-component picture content. By including the spatially corresponding portion of the reconstructed first component signal into the reconstruction of the second component signal, any remaining inter-component redundancies/correlations present such as still present despite a possibly a priori performed component space transformation, or present because of having been introduced by such a priori performed component space transformation, for example, may readily be removed by way of the inter-component redundancy/correlation reduction of the second component signal.

公开(公告)号：US10230949B2

公开(公告)日：2019-03-12

申请号：US15096512

申请日：2016-04-12

Applicant: GE Video Compression, LLC

Inventor： Tung Nguyen ,  Ali Atef Ibrahim Khairat Abdelhamid ,  Detlev Marpe

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/157 ,  H04N19/186 ,  H04N19/172 ,  H04N19/176

Abstract: The coding efficiency of a multi-component picture or video coding concept is improved by reconstructing a third component signal relating to a third component of the multi-component video using inter-component prediction from both a reconstructed first component signal and a reconstructed second component signal.

公开(公告)号：US10224953B2

公开(公告)日：2019-03-05

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 ,  H03M7/46 ,  H03M7/40

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：US10110903B2

公开(公告)日：2018-10-23

申请号：US15386634

申请日：2016-12-21

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Thomas Wiegand ,  Detlev Marpe ,  Karsten Mueller ,  Philipp Merkle ,  Gerhard Tech ,  Hunn Rhee ,  Heiko Schwarz

IPC: H04N15/00 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/597

Abstract: A higher compression rate or better rate/distortion ratio may be achieved by adopting or predicting second coding parameters used for encoding a second view of the multi-view signal from first coding parameters used in encoding a first view of the multi-view signal. The redundancies between views of a multi-view signal may not be restricted to the views themselves, such as the video information thereof, but that the coding parameters in parallel encoding these views show similarities which may be exploited in order to further improve the coding rate.

公开(公告)号：US10038920B2

公开(公告)日：2018-07-31

申请号：US13649233

申请日：2012-10-11

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp Helle ,  Detlev Marpe ,  Simon Oudin ,  Thomas Wiegand

IPC: H04N7/32 ,  H04N19/96 ,  H04N19/52 ,  H04N19/53 ,  H04N19/593 ,  H04N19/463 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/30 ,  H04N19/44 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/42 ,  H04N19/513

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.