公开(公告)号：US11595674B2

公开(公告)日：2023-02-28

申请号：US16988271

申请日：2020-08-07

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/50 ,  H04N19/503 ,  H04N19/593 ,  H04N19/597 ,  H04N19/82 ,  H04N19/96

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：US11546642B2

公开(公告)日：2023-01-03

申请号：US16987530

申请日：2020-08-07

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：US11516474B2

公开(公告)日：2022-11-29

申请号：US17232811

申请日：2021-04-16

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

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：US11477467B2

公开(公告)日：2022-10-18

申请号：US16871866

申请日：2020-05-11

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: H04N19/85 ,  H04N19/30 ,  H04N19/31 ,  H04N19/33 ,  H04N19/105 ,  H04N19/117 ,  H04N19/157 ,  H04N19/187 ,  H04N19/82 ,  H04N19/136 ,  H04N19/159 ,  H04N19/34 ,  H04N19/119 ,  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: Scalable video coding is rendered more efficient by deriving/selecting a subblock subdivision to be used for enhancement layer prediction, among a set of possible subblock subdivisions of an enhancement layer block by evaluating the spatial variation of the base layer coding parameters over the base layer signal. By this measure, less of the signalization overhead has to be spent on signaling this subblock subdivision within the enhancement layer data stream, if any. The subblock subdivision thus selected may be used in predictively coding/decoding the enhancement layer signal.

公开(公告)号：US11178410B2

公开(公告)日：2021-11-16

申请号：US16923205

申请日：2020-07-08

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 ,  H04N19/129 ,  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：US11134255B2

公开(公告)日：2021-09-28

申请号：US16459940

申请日：2019-07-02

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: H04N19/33 ,  H04N19/105 ,  H04N19/117 ,  H04N19/157 ,  H04N19/187 ,  H04N19/82 ,  H04N19/136 ,  H04N19/159 ,  H04N19/34 ,  H04N19/119 ,  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: A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.

公开(公告)号：US11115651B2

公开(公告)日：2021-09-07

申请号：US16849271

申请日：2020-04-15

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：US11095906B2

公开(公告)日：2021-08-17

申请号：US16983356

申请日：2020-08-03

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 ,  H04N19/13 ,  H04N19/61 ,  H04N19/91 ,  H04N19/136 ,  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：US11087355B2

公开(公告)日：2021-08-10

申请号：US16988120

申请日：2020-08-07

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: G06Q30/02 ,  G06F16/00 ,  H04N19/105 ,  H04N19/147 ,  H04N19/196 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/61 ,  H04N19/96 ,  H04N19/463 ,  H04N19/14 ,  H04N19/186 ,  G06Q30/06 ,  G06Q10/00 ,  G06Q30/00

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：US11070822B2

公开(公告)日：2021-07-20

申请号：US16374059

申请日：2019-04-03

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.