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公开(公告)号：US20210314610A1
公开(公告)日：2021-10-07
申请号：US17353612
申请日：2021-06-21
发明人： Jizheng XU , Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC分类号： H04N19/593 , H04N19/96 , H04N19/176 , H04N19/184
摘要： The application relates to an intra block copy mode with dual tree partition. A method of video processing is disclosed. The method of video processing includes: determining, during a conversion between a current video block and a bitstream representation of the current video block, a block vector for the current video block; and performing, at least based on the block vector, the conversion, wherein when the current video block is coded with a coding mode using a reference block for prediction pointing to a same picture that the current video block is located in, and the current video block is a first type of block, the block vector is derived from at least one second type of block.
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公开(公告)号：US20210306631A1
公开(公告)日：2021-09-30
申请号：US17346486
申请日：2021-06-14
发明人： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC分类号： H04N19/119 , H04N19/159 , H04N19/176 , H04N19/96 , H04N19/103 , H04N19/186 , H04N19/593
摘要： Method and apparatus for using block size restrictions in video decoding are described. In a representative aspect, a method for video decoding includes receiving a bitstream representation of video data including a block wherein the block comprises samples associated with a first component and second components, wherein samples associated with the first component of the block have a dimension M×N; and decoding the first component and the second components of the block; wherein decoding the first component of the block comprises, based on the dimension, decoding a plurality of sub-blocks for the first component of the block, and the plurality of the sub-blocks are generated by performing a splitting operation only on the samples associated with the first component of the block and not on the samples associated with the second components of the block.
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公开(公告)号：US20210297694A1
公开(公告)日：2021-09-23
申请号：US17338601
申请日：2021-06-03
发明人： Kai ZHANG , Li ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC分类号： H04N19/593 , H04N19/176 , H04N19/186
摘要： A method for video processing is provided. The method includes performing downsampling on chroma and luma samples of a neighboring block of the current video block; determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, parameters of cross-component linear model (CCLM) based on the downsampled chroma and luma samples obtained from the downsampling; applying the CCLM on luma samples located in a luma block corresponding to the current video block to derive prediction values of the current video block; and performing the conversion based on the prediction values.
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124.发明申请公开(公告)号：US20210281877A1
公开(公告)日：2021-09-09
申请号：US17330889
申请日：2021-05-26
发明人： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Yue WANG
IPC分类号： H04N19/56 , H04N19/52 , H04N19/184 , H04N19/176 , H04N19/593
摘要： A method for video processing is provided to include constructing, during a conversion between a current video block and a coded representation of the current video block, an intra block copy (IBC) motion candidate list, wherein insertion of motion candidates to the IBC motion candidate list is subject to a size restriction; and performing the conversion using the IBC motion candidate list.
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公开(公告)号：US20210258575A1
公开(公告)日：2021-08-19
申请号：US17244533
申请日：2021-04-29
发明人： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG , Na ZHANG
IPC分类号： H04N19/119 , H04N19/105 , H04N19/46 , H04N19/176
摘要： Devices, systems and methods for digital video coding, which include geometric partitioning, are described. An exemplary method for video processing includes making a decision, based on a priority rule, regarding an order of insertion of motion candidates into a motion candidate list for a conversion between a current block of video and a bitstream representation of the video, wherein the current block is coded using a geometry partition mode; and performing, based on the decision and the motion candidate list, the conversion.
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公开(公告)号：US20210250602A1
公开(公告)日：2021-08-12
申请号：US17199925
申请日：2021-03-12
发明人： Li ZHANG , Kai ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC分类号： H04N19/513 , H04N19/176 , H04N19/109
摘要： Techniques for video processing are described. One example method includes determining an indication that indicates a maximum number of candidates allowed in a candidate list for at least one video block in a video, the maximum number of candidates allowed in the candidate list corresponding to at least one of a maximum number of candidates in a geometry partition mode (GEO) based merge candidate list, a maximum number of base candidates in a merge with motion vector difference (MMVD) merge candidate list, a maximum number of base candidates in a sub-block based MMVD merge candidate list, and a maximum number of candidates in a geometry partition mode based affine merge candidate list; and performing video processing on the at least one video block based on the indication.
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公开(公告)号：US20210243468A1
公开(公告)日：2021-08-05
申请号：US17237450
申请日：2021-04-22
发明人： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC分类号： H04N19/52 , H04N19/176 , H04N19/184
摘要： Devices, systems and methods for utilization of motion information for affine mode are described. In a representative aspect, a video processing method includes: acquiring, during a conversion between a current block and a bitstream representation of the current block, motion information of the current block, wherein the motion information of the current block is based on at least one affine model parameter of a neighboring block of the current block; and performing, based on the motion information, the conversion between the current block and the bitstream representation of the current block.
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公开(公告)号：US20210227250A1
公开(公告)日：2021-07-22
申请号：US17225504
申请日：2021-04-08
发明人： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC分类号： H04N19/577 , H04N19/176 , H04N19/105 , H04N19/186 , H04N19/593 , H04N19/119
摘要： Gradient computation in Bi-directional optical flow are described. In a representative aspect, a method of video processing including: modifying temporal gradients in a motion vectors refinement process of a video block or sub-blocks within the video block; and performing the motion vectors refinement process of the video block or the sub-blocks within the video block based on the modified temporal gradients.
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公开(公告)号：US20210211647A1
公开(公告)日：2021-07-08
申请号：US17207060
申请日：2021-03-19
发明人： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC分类号： H04N19/105 , H04N19/137 , H04N19/30 , H04N19/176
摘要： 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：US20210160532A1
公开(公告)日：2021-05-27
申请号：US17167232
申请日：2021-02-04
发明人： Li ZHANG , Kai ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC分类号： H04N19/52 , H04N19/176 , H04N19/184
摘要： Devices, systems and methods for digital video coding, which includes constructing separate motion candidate lists for video coding, are described. An exemplary method for video processing includes constructing, for a first video block of a video, a first motion candidate list using a first motion candidate list construction method that includes motion candidates that only relate to history-based motion vector prediction (HMVP) candidates, and performing a conversion between the first video block and a bitstream representation of the video including the first video block according to the constructed first motion candidate list.
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