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公开(公告)号：US10462474B2
公开(公告)日：2019-10-29
申请号：US16385391
申请日：2019-04-16
发明人： Heiner Kirchhoffer , Heiko Schwarz , Tung Nguyen , Detlev Marpe , Thomas Wiegand
IPC分类号： H04N19/18 , H04N19/59 , H04N19/124 , H04N19/139 , H04N19/51 , H04N19/91 , H04N19/61 , H04N19/50 , H04N19/129 , H04N19/13 , H04N19/46 , H04N19/70 , H04N19/176 , H04N19/136
摘要： 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.
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公开(公告)号：US10460344B2
公开(公告)日：2019-10-29
申请号：US16197210
申请日：2018-11-20
发明人： Philipp Helle , Simon Oudin , Martin Winken , Detlev Marpe , Thomas Wiegand
IPC分类号： G06Q30/02 , G06F16/00 , 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 , G06Q30/06 , G06Q10/00 , G06Q30/00
摘要： 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.
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公开(公告)号：US10425644B2
公开(公告)日：2019-09-24
申请号：US16238013
申请日：2019-01-02
发明人： Valeri George , Benjamin Bross , Heiner Kirchhoffer , Detlev Marpe , Tung Nguyen , Matthias Preiss , Mischa Siekmann , Jan Stegemann , Thomas Wiegand
IPC分类号： H04N19/13 , H03M7/42 , H04N19/52 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H04N19/184
摘要： 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.
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公开(公告)号：US10404272B2
公开(公告)日：2019-09-03
申请号：US16198338
申请日：2018-11-21
发明人： Detlev Marpe , Tung Nguyen , Heiko Schwarz , Thomas Wiegand
摘要： 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.
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公开(公告)号：US10374627B2
公开(公告)日：2019-08-06
申请号：US16109953
申请日：2018-08-23
发明人： Detlev Marpe , Tung Nguyen , Heiko Schwarz , Thomas Wiegand
摘要： 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.
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公开(公告)号：US10306243B2
公开(公告)日：2019-05-28
申请号：US16003183
申请日：2018-06-08
发明人： Heiner Kirchhoffer , Heiko Schwarz , Tung Nguyen , Detlev Marpe , Thomas Wiegand
IPC分类号： 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
摘要： 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.
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公开(公告)号：US10264277B2
公开(公告)日：2019-04-16
申请号：US14273701
申请日：2014-05-09
发明人： Sebastian Bosse , Heiko Schwarz , Thomas Wiegand , Heribert Brust
IPC分类号： H04N19/52 , H04N19/597
摘要： Actually rendered portions of a renderable portion of a first view of a multi-view signal are introduced into a prediction loop of a multi-view encoder to form a reference signal for the block-based prediction of the encoder's view predictor may improve the prediction and thereby increasing the coding efficiency. The introduction may be performed by completely inserting the renderable portion into the prediction loop to form new reference pictures with their own reference picture indices in addition to reference pictures obtained by the reconstructed version of the multi-view signal of the block-based prediction. Alternatively, the actually rendered portion may be introduced into the prediction loop completely, but with replacing the normal prediction reference signal, i.e. the normally reconstructed signal as obtained by block-based prediction. Alternatively, it may be signaled within the data stream which portions of the renderable portion are used to replace respective portions in the normally reconstructed signal.
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公开(公告)号：US10248966B2
公开(公告)日：2019-04-02
申请号：US15940839
申请日：2018-03-29
发明人： Philipp Helle , Simon Oudin , Martin Winken , Detlev Marpe , Thomas Wiegand
IPC分类号： 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
摘要： 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.
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39.发明授权公开(公告)号：US10212420B2
公开(公告)日：2019-02-19
申请号：US14666658
申请日：2015-03-24
发明人： 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分类号： 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
摘要： 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.
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公开(公告)号：US10165269B2
公开(公告)日：2018-12-25
申请号：US15803310
申请日：2017-11-03
发明人： Detlev Marpe , Martin Winken , Heiko Schwarz , Thomas Wiegand
IPC分类号： H04N19/102 , H04N19/50 , H04N19/30 , H04N19/61 , H04N19/117 , H04N19/186 , H04N19/184 , H04N19/187 , H04N19/36
摘要： 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.
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