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公开(公告)号：US20230396782A1
公开(公告)日：2023-12-07
申请号：US18207470
申请日：2023-06-08
发明人： Karsten SUEHRING , Thomas SCHIERL , Valeri GEORGE , Detlev MARPE , Robert SKUPIN
IPC分类号： H04N19/187 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/30 , H04N19/102 , H04N19/12 , H04N19/174 , H04N19/80 , H04N19/33 , H04N19/436 , H04N19/59 , H04N19/139
CPC分类号： H04N19/187 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/30 , H04N19/102 , H04N19/156 , H04N19/174 , H04N19/80 , H04N19/33 , H04N19/436 , H04N19/59 , H04N19/139 , H04N19/12
摘要： Scalable coding concepts are described. One aspect improves parallel decoding of inter-dependent layers of a multi-layer video data stream by introducing a long-term syntax element structure for guaranteeing that during a predetermined time period the pictures of the dependent layer are subdivided so that borders of the spatial segments of the pictures of the second layer and the spatial segments of the first layer overlay. Another aspect concerns upsampling from base layer to enhancement layer. Another aspect introduces a long-term syntax element structure allowing the decoder to determine the inter-layer offset for a predetermined time period. Another aspect introduces a type indicator field changing a way a layer indicator field within the NAL unit headers is to be interpreted. Another aspect allows different codecs/standards to be used for the different layers. Another aspect concerns a syntax element structure which indicates the inter-layer offset in units of the base layer blocks.
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公开(公告)号：US20230283792A1
公开(公告)日：2023-09-07
申请号：US18169248
申请日：2023-02-15
IPC分类号： H04N19/44 , H04N19/597 , H04N19/50 , H04N19/503 , H04N19/96 , H04N19/593 , H04N19/82 , H04N19/119 , H04N19/176 , H04N19/186
CPC分类号： H04N19/44 , H04N19/597 , H04N19/50 , H04N19/503 , H04N19/96 , H04N19/593 , H04N19/82 , H04N19/119 , H04N19/176 , H04N19/186
摘要： 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.
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公开(公告)号：US20230269398A1
公开(公告)日：2023-08-24
申请号：US18188744
申请日：2023-03-23
发明人： Tung NGUYEN , Heiner KIRCHHOFFER , Detlev MARPE
CPC分类号： H04N19/60 , H03M7/4018 , H03M7/4075 , H04N19/91
摘要： 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.
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公开(公告)号：US20230078680A1
公开(公告)日：2023-03-16
申请号：US17930997
申请日：2022-09-09
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 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/184 , H04N19/50 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/91 , H03M7/42
摘要： 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.
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公开(公告)号：US20220224920A1
公开(公告)日：2022-07-14
申请号：US17587849
申请日：2022-01-28
发明人： Thomas SCHIERL , Valeri GEORGE , Anastasia HENKEL , Detlev MARPE , Karsten GRÜNEBERG , Robert SKUPIN
IPC分类号： H04N19/169 , H04N19/46 , H04N19/91 , H04N19/70 , H04N19/463 , H04N19/174 , H04N19/436 , H04N19/13
摘要： The handling of scalable data streams by network entities is rendered less complex by, in the data stream, accompanying packets which actually carry data by packets of a different packet type which have a scalability axes descriptor defining the number of scalability axes and a semantic meaning thereof. In another aspect, the handling of scalable data streams by network entities is rendered more efficient by conveying level and/or profile descriptors using packets other than the data carrying packets, with profile and/or level descriptors being divided up into a first set explicitly signaling the definition of the available coding option set and/or available syntax element value range for a respective operation point, and a second set of profile and/or level descriptors which signal the definition of the available coding option set and/or available syntax element value range for their respective operation points by reference another profile and/or level descriptor.
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6.发明申请公开(公告)号：US20210409739A1
公开(公告)日：2021-12-30
申请号：US17412171
申请日：2021-08-25
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： H04N19/33 , 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
摘要： 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.
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公开(公告)号：US20210306646A1
公开(公告)日：2021-09-30
申请号：US17241855
申请日：2021-04-27
发明人： Karsten SUEHRING , Thomas SCHIERL , Valeri GEORGE , Detlev MARPE , Robert SKUPIN
IPC分类号： H04N19/187 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/30 , H04N19/102 , H04N19/12 , H04N19/174 , H04N19/80 , H04N19/33 , H04N19/436 , H04N19/59 , H04N19/139
摘要： Scalable coding concepts are described. One aspect improves parallel decoding of inter-dependent layers of a multi-layer video data stream by introducing a long-term syntax element structure for guaranteeing that during a predetermined time period the pictures of the dependent layer are subdivided so that borders of the spatial segments of the pictures of the second layer and the spatial segments of the first layer overlay. Another aspect concerns upsampling from base layer to enhancement layer. Another aspect introduces a long-term syntax element structure allowing the decoder to determine the inter-layer offset for a predetermined time period. Another aspect introduces a type indicator field changing a way a layer indicator field within the NAL unit headers is to be interpreted. Another aspect allows different codecs/standards to be used for the different layers. Another aspect concerns a syntax element structure which indicates the inter-layer offset in units of the base layer blocks.
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公开(公告)号：US20210168380A1
公开(公告)日：2021-06-03
申请号：US17172851
申请日：2021-02-10
发明人： Philipp MERKLE , Christian BARTNIK , Haricharan LAKSHMAN , Detlev MARPE , Karsten MUELLER , Thomas WIEGAND , Gerhard TECH
IPC分类号： H04N19/176 , H04N19/597 , H04N19/105 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/196 , H04N19/96 , H04N19/593 , H04N19/157 , H04N19/82 , H04N19/126 , H04N19/61
摘要： The way of predicting a current block by assigning constant partition values to the partitions of a bi-partitioning of a block is quite effective, especially in case of coding sample arrays such as depth/disparity maps where the content of these sample arrays is mostly composed of plateaus or simple connected regions of similar value separated from each other by steep edges. The transmission of such constant partition values would, however, still need a considerable amount of side information which should be avoided. This side information rate may be further reduced if mean values of values of neighboring samples associated or adjoining the respective partitions are used as predictors for the constant partition values.
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公开(公告)号：US20200372537A1
公开(公告)日：2020-11-26
申请号：US16988120
申请日：2020-08-07
发明人： Philipp HELLE , Simon OUDIN , Martin WINKEN , Detlev MARPE , Thomas WIEGAND
IPC分类号： 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
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：US20200351491A1
公开(公告)日：2020-11-05
申请号：US16849271
申请日：2020-04-15
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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