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41.发明授权公开(公告)号：US11575921B2
公开(公告)日：2023-02-07
申请号：US16861540
申请日：2020-04-29
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： H04N19/44 , 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
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：US11032562B2
公开(公告)日：2021-06-08
申请号：US17010987
申请日：2020-09-03
发明人： Philipp Merkle , Christian Bartnik , Haricharan Lakshman , Detlev Marpe , Karsten Mueller , Thomas Wiegand , Gerhard Tech
IPC分类号： H04N19/51 , H04N19/597 , H04N19/105 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/196 , H04N19/96 , H04N19/593 , H04N19/157 , H04N19/82 , H04N19/52 , H04N19/46 , H04N19/14
摘要： In accordance with a first aspect, the intra prediction direction of a neighboring, intra-predicted block is used in order to predict the extension direction of the wedgelet separation line of a current block, thereby reducing the side information rate necessitated in order to convey the partitioning information. In accordance with a second aspect, the idea is that previously reconstructed samples, i.e. reconstructed values of blocks preceding the current block in accordance with the coding/decoding order allow for at least a prediction of a correct placement of a starting point of the wedgelet separation line, namely by placing the starting point of the wedgelet separation line at a position of a maximum change between consecutive ones of a sequence of reconstructed values of samples of a line of samples extending adjacent to the current block along a circumference thereof. Both aspects may be used individually or in combination.
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公开(公告)号：US11032555B2
公开(公告)日：2021-06-08
申请号：US17012224
申请日：2020-09-04
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 , H04N19/96 , H04N19/593 , H04N19/157 , H04N19/82 , H04N19/126 , H04N19/61 , H04N19/196 , H04N19/14
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：US10986352B2
公开(公告)日：2021-04-20
申请号：US17012506
申请日：2020-09-04
发明人： Philipp Merkle , Christian Bartnik , Haricharan Lakshman , Detlev Marpe , Karsten Mueller , Thomas Wiegand , Gerhard Tech
IPC分类号： H04N19/176 , H04N19/105 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/196 , H04N19/96 , H04N19/593 , H04N19/103 , H04N19/157 , H04N19/82 , H04N19/44 , H04N19/23 , H04N19/597 , H04N19/14
摘要： Although wedgelet-based partitioning seems to represent a better tradeoff between side information rate on the one hand and achievable variety in partitioning possibilities on the other hand, compared to contour partitioning, the ability to alleviate the constraints of the partitioning to the extent that the partitions have to be wedgelet partitions, enables applying relatively uncomplex statistical analysis onto overlaid spatially sampled texture information in order to derive a good predictor for the bi-segmentation in a depth/disparity map. Thus, in accordance with a first aspect it is exactly the increase of the freedom which alleviates the signaling overhead provided that co-located texture information in form of a picture is present. Another aspect pertains the possibility to save side information rate involved with signaling a respective coding mode supporting irregular partitioning.
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公开(公告)号：US10911753B2
公开(公告)日：2021-02-02
申请号：US16736845
申请日：2020-01-08
发明人： Philipp Merkle , Christian Bartnik , Haricharan Lakshman , Detlev Marpe , Karsten Mueller , Thomas Wiegand , Gerhard Tech
IPC分类号： H04N19/105 , H04N19/597 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/96 , H04N19/593 , H04N19/124 , H04N19/157 , H04N19/174 , H04N19/44 , H04N19/82 , H04N19/167
摘要： Wedgelet separation lines of neighboring blocks are predicted from each other by aligning the wedgelet separation lines of such neighboring blocks to each other, thereby reducing the side information coding rate that may be used.
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公开(公告)号：US10785497B2
公开(公告)日：2020-09-22
申请号：US16702616
申请日：2019-12-04
发明人： Philipp Merkle , Christian Bartnik , Haricharan Lakshman , Detlev Marpe , Karsten Mueller , Thomas Wiegand , Gerhard Tech
IPC分类号： H04N19/51 , H04N19/597 , H04N19/105 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/196 , H04N19/96 , H04N19/593 , H04N19/157 , H04N19/82 , H04N19/52 , H04N19/14
摘要： In accordance with a first aspect, the intra prediction direction of a neighboring, intra-predicted block is used in order to predict the extension direction of the wedgelet separation line of a current block, thereby reducing the side information rate necessitated in order to convey the partitioning information. In accordance with a second aspect, the idea is that previously reconstructed samples, i.e. reconstructed values of blocks preceding the current block in accordance with the coding/decoding order allow for at least a prediction of a correct placement of a starting point of the wedgelet separation line, namely by placing the starting point of the wedgelet separation line at a position of a maximum change between consecutive ones of a sequence of reconstructed values of samples of a line of samples extending adjacent to the current block along a circumference thereof. Both aspects may be used individually or in combination.
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公开(公告)号：US10778981B2
公开(公告)日：2020-09-15
申请号：US16693886
申请日：2019-11-25
发明人： Valeri George , Benjamin Bross , Heiner Kirchhoffer , Detlev Marpe , Tung Nguyen , Matthias Preiss , Mischa Siekmann , Jan Stegemann , Thomas Wiegand , Christian Bartnik
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02 , H04N11/04 , H04N19/13 , H04N19/50 , H04N19/70 , H04N19/61 , H04N19/124 , H04N19/184 , H04N19/52 , H04N19/513 , H04N19/91 , H04N19/132 , H04N19/174 , H03M7/42
摘要： A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode. In another aspect, a desymbolizer is configured to perform desymbolization such that the control parameter varies in accordance with the data stream at a first rate in case of the high-efficiency mode being activated and the control parameter is constant irrespective of the data stream or changes depending on the data stream, but at a second lower rate in case of the low-complexity mode being activated.
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公开(公告)号：US10567776B2
公开(公告)日：2020-02-18
申请号：US16437185
申请日：2019-06-11
发明人： Philipp Merkle , Christian Bartnik , Haricharan Lakshman , Detlev Marpe , Karsten Mueller , Thomas Wiegand , Gerhard Tech
IPC分类号： H04N19/176 , H04N19/44 , H04N19/82 , H04N19/157 , H04N19/593 , H04N19/103 , H04N19/597 , H04N19/96 , H04N19/196 , H04N19/46 , H04N19/119 , H04N19/70 , H04N19/105 , H04N19/23 , H04N19/14
摘要： Although wedgelet-based partitioning seems to represent a better tradeoff between side information rate on the one hand and achievable variety in partitioning possibilities on the other hand, compared to contour partitioning, the ability to alleviate the constraints of the partitioning to the extent that the partitions have to be wedgelet partitions, enables applying relatively uncomplex statistical analysis onto overlaid spatially sampled texture information in order to derive a good predictor for the bi-segmentation in a depth/disparity map. Thus, in accordance with a first aspect it is exactly the increase of the freedom which alleviates the signaling overhead provided that co-located texture information in form of a picture is present. Another aspect pertains the possibility to save side information rate involved with signaling a respective coding mode supporting irregular partitioning.
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公开(公告)号：US10542263B2
公开(公告)日：2020-01-21
申请号：US16385602
申请日：2019-04-16
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 , H04N19/14
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：US10334255B2
公开(公告)日：2019-06-25
申请号：US15655329
申请日：2017-07-20
发明人： Philipp Merkle , Christian Bartnik , Haricharan Lakshman , Detlev Marpe , Karsten Mueller , Thomas Wiegand , Gerhard Tech
IPC分类号： H04N19/14 , H04N19/46 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/96 , H04N19/105 , H04N19/119 , H04N19/126 , H04N19/157 , H04N19/176 , H04N19/196 , H04N19/593 , H04N19/597
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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