公开(公告)号：US10374627B2

公开(公告)日：2019-08-06

申请号：US16109953

申请日：2018-08-23

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: H03M7/00 ,  H03M7/40 ,  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：US10306243B2

公开(公告)日：2019-05-28

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

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：US10248966B2

公开(公告)日：2019-04-02

申请号：US15940839

申请日：2018-03-29

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: G06Q30/02 ,  G06Q30/06 ,  G06F17/30 ,  G06Q10/00 ,  G06Q30/00 ,  H04N19/196 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/61 ,  H04N19/96 ,  H04N19/463 ,  H04N19/14 ,  H04N19/186 ,  H04N19/105 ,  H04N19/147

Abstract: A favorable merging or grouping of simply connected regions into which the array of information samples is sub-divided, is coded with a reduced amount of data. To this end, a predetermined relative locational relationship is defined enabling an identifying, for a predetermined simply connected region, of simply connected regions within the plurality of simply connected regions which have the predetermined relative locational relationship to the predetermined simply connected region. Namely, if the number is zero, a merge indicator for the predetermined simply connected region may be absent within the data stream. In other embodiments, spatial sub-division is performed depending on a first subset of syntax elements, followed by combining spatially neighboring simply connected regions depending on a second subset of syntax elements, to obtain an intermediate sub-division.

公开(公告)号：US10244235B2

公开(公告)日：2019-03-26

申请号：US15198029

申请日：2016-06-30

Applicant: GE Video Compression, LLC

Inventor： Philipp Merkle ,  Detlev Marpe ,  Karsten Mueller

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

Abstract: Wedgelet-based coding in conjunction with the usage of 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：US10212420B2

公开(公告)日：2019-02-19

申请号：US14666658

申请日：2015-03-24

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

Abstract: The coding efficiency of scalable video coding is increased by substituting missing spatial intra prediction parameter candidates in a spatial neighborhood of a current block of the enhancement layer by use of intra prediction parameters of a co-located block of the base layer signal. By this measure, the coding efficiency for coding the spatial intra prediction parameters is increased due to the improved prediction quality of the set of intra prediction parameters of the enhancement layer, or, more precisely stated, the increased likelihood, that appropriate predictors for the intra prediction parameters for an intra predicted block of the enhancement layer are available thereby increasing the likelihood that the signaling of the intra prediction parameter of the respective enhancement layer block may be performed, on average, with less bits.

公开(公告)号：US10165269B2

公开(公告)日：2018-12-25

申请号：US15803310

申请日：2017-11-03

Applicant: GE Video Compression, LLC

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

IPC: H04N19/102 ,  H04N19/50 ,  H04N19/30 ,  H04N19/61 ,  H04N19/117 ,  H04N19/186 ,  H04N19/184 ,  H04N19/187 ,  H04N19/36

Abstract: A more efficient way of addressing different bit-depths, or different bit-depths and chroma sampling format requirements is achieved by using a low bit-depth and/or low-chroma resolution representation for providing a respective base layer data stream representing this low bit-depth and/or low-chroma resolution representation as well as for providing a higher bit-depth and/or higher chroma resolution representation so that a respective prediction residual may be encoded in order to obtain a higher bit-depth and/or higher chroma resolution representation. By this measure, an encoder is enabled to store a base-quality representation of a picture or a video sequence, which can be decoded by any legacy decoder or video decoder, together with an enhancement signal for higher bit-depth and/or reduced chroma sub-sampling, which may be ignored by legacy decoders or video decoders.

公开(公告)号：US10148962B2

公开(公告)日：2018-12-04

申请号：US15880772

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: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/13 ,  H04N19/174 ,  H04N19/61 ,  H04N19/513 ,  H04N19/52 ,  H04N19/70 ,  H04N19/184 ,  H04N19/50 ,  H04N19/132 ,  H03M7/42 ,  H04N19/124 ,  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：US10090856B2

公开(公告)日：2018-10-02

申请号：US15717427

申请日：2017-09-27

Applicant: GE Video Compression, LLC

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

IPC: H03M7/00

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：US10003828B2

公开(公告)日：2018-06-19

申请号：US15196890

申请日：2016-06-29

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: 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.

公开(公告)号：US09930370B2

公开(公告)日：2018-03-27

申请号：US15636476

申请日：2017-06-28

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: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/91 ,  H03M7/42 ,  H04N19/52 ,  H04N19/50 ,  H04N19/70 ,  H04N19/13 ,  H04N19/61 ,  H04N19/124 ,  H04N19/513 ,  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: 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.