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公开(公告)号：US11546601B2
公开(公告)日：2023-01-03
申请号：US17207060
申请日：2021-03-19
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/137 , H04N19/105 , H04N19/176 , H04N19/513 , H04N19/30 , H04N19/503
Abstract: A method of video processing includes determining, for a current block, at least one motion candidate list; and performing a conversion between the current block and a bitstream representation of the current block using the at least one motion candidate list, the at least one motion candidate list including at least one motion candidate derived from a set of neighboring blocks including one or more spatial and temporal neighboring blocks.
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公开(公告)号：US20220417565A1
公开(公告)日：2022-12-29
申请号：US17892858
申请日：2022-08-22
Inventor： Kai Zhang , Li Zhang , Ye-kui Wang , Zhipin Deng , Kui Fan , Jizheng Xu , Hongbin Liu
IPC: H04N19/96 , H04N19/184 , H04N19/70
Abstract: A method includes performing a conversion between a video that includes at least a video tile and a bitstream of the video according to a rule. The rule specifies that a height of a slice in the video tile in units of coding tree units is derived based on a value of a first syntax element in the bitstream indicating a number of explicitly provided slice heights for slices in the video tile that includes the slice.
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公开(公告)号：US11539981B2
公开(公告)日：2022-12-27
申请号：US17556689
申请日：2021-12-20
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu , Yue Wang
IPC: H04N19/186 , H04N19/593 , H04N19/96 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/70 , H04N19/159 , H04N19/132 , H04N19/124 , H04N19/61 , H04N19/169 , H04N19/12 , H04N19/17 , H04N19/30 , H04N9/67
Abstract: A method of video processing is provided. The method includes determining, due to a dual tree partitioning structure being used for a conversion between a video unit and a coded representation of the video unit, that use of an adaptive color space transformation (ACT) tool is disabled for the video unit; and performing, based on the determining, the conversion by disabling the ACT tool for the video unit, wherein the use of the ACT tool comprises: converting, during encoding a representation of a visual signal from a first color domain to a second color domain, or converting during decoding, a representation of a visual signal from the second color domain to the first color domain.
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公开(公告)号：US11533496B2
公开(公告)日：2022-12-20
申请号：US17479192
申请日：2021-09-20
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu
IPC: H04N19/30 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/132 , H04N19/70 , H04N19/146 , H04N19/196 , H04N19/96
Abstract: A method for visual media processing, including performing a conversion between a current chroma chroma block of visual media data and a bitstream representation of the current chroma chroma block, wherein, during the conversion, a chroma residual of the current chroma chroma block is scaled based on a scaling coefficient, wherein the scaling coefficient is derived at least based on luma samples located in predefined positions.
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公开(公告)号：US11533487B2
公开(公告)日：2022-12-20
申请号：US17567717
申请日：2022-01-03
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu
IPC: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/30 , H04N19/186 , H04N19/70
Abstract: A method for visual media processing includes performing a conversion between a current video unit of a visual media data and a bitstream representation of the current video unit, wherein the bitstream representation is configured according to a format rule; and wherein the format rule specifies a level of a video segment at which one or more syntax elements indicative of a scaling factor by which a chroma residual is scaled for coding the current video unit is selectively included in the bitstream representation.
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Patent Agency Ranking
公开(公告)号：US11516467B2
公开(公告)日：2022-11-29
申请号：US17384246
申请日：2021-07-23
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/423 , H04N19/593 , H04N19/105
Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.
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公开(公告)号：US20220377367A1
公开(公告)日：2022-11-24
申请号：US17873917
申请日：2022-07-26
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yang Wang , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/577
Abstract: Motion compensation along different directions is disclosed. A method for video processing including: determining, for a conversion between a current video block of a video and a bitstream representation of the current video block, optical flow associated with the current video block in an optical flow-based motion refinement process or prediction process, wherein the optical flow is derived along directions that are different from a horizontal direction and/or a vertical direction; and performing the conversion based on the optical flow.
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公开(公告)号：US11509941B2
公开(公告)日：2022-11-22
申请号：US17354282
申请日：2021-06-22
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/82 , H04N19/117 , H04N19/174 , H04N19/176 , H04N19/96 , H04N19/17
Abstract: Devices, systems and methods for video processing are described. In an exemplary aspect, a method for video processing includes performing a conversion between a coded representation of a video comprising one or more video regions and the video. The coded representation includes first side information that provides a clipping parameter for filtering a reconstruction of a video unit of a video region using a non-linear adaptive loop filter, and wherein the first side information is signaled together with second side information indicative of filter coefficients used in the non-linear adaptive loop filter.
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公开(公告)号：US11509929B2
公开(公告)日：2022-11-22
申请号：US17225433
申请日：2021-04-08
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/119 , H04N19/105 , H04N19/577 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/117 , H04N19/513 , H04N19/132
Abstract: A method for video processing includes: refining motion information of a video block by using a multi-step refinement processing, multiple refined motion vectors (MVs) of the video block being derived iteratively in respective steps of the multi-step refinement processing, and performing a video processing on the video block based on the multiple refined MVs of the video block.
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公开(公告)号：US11503293B2
公开(公告)日：2022-11-15
申请号：US17675756
申请日：2022-02-18
Inventor： Li Zhang , Kai Zhang , Jizheng Xu , Hongbin Liu , Yue Wang
IPC: H04N19/12 , H04N19/176 , H04N19/60 , H04N19/18 , H04N19/48
Abstract: A video processing method includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether to enable a level mapping operation or a level remapping operation based on a rule, wherein the level mapping operation or the level remapping operation includes changing between a first representation of a residual coefficient of the current block and a second representation of the residual coefficient of the current block based on neighboring residual coefficients of the residual coefficient; and performing the conversion by selectively using the level mapping operation or the level remapping operation based on the determining.
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