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公开(公告)号：US20220272335A1
公开(公告)日：2022-08-25
申请号：US17735435
申请日：2022-05-03
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/117 , H04N19/82 , H04N19/186
Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video unit of a video including one or more video blocks and a bitstream representation of the video, a padding process used for padding unavailable samples during application of a cross-component adaptive loop filtering (CC-ALF) tool to at least some video blocks of the current video unit according to a rule; and performing the conversion based on the determining, and wherein the rule specifies that the padding process is also used for padding unavailable samples during application of an adaptive loop filtering (ALF) tool to one or more video blocks of the current video unit.
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公开(公告)号：US20220272330A1
公开(公告)日：2022-08-25
申请号：US17727486
申请日：2022-04-22
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/11 , H04N19/186 , H04N19/176 , H04N19/52 , H04N19/132
Abstract: A method of video processing includes making a determination, fora conversion between a current video block of a video and a coded representation of the video, of an affine merge candidate selectively according to a rule; and performing the conversion according to the determination. The rule specifies how the affine merge candidate is calculated without use of a log 2(X) operation where X is equal to or less than zero. The affine merge candidate is a motion candidate derived from neighboring affine coded video blocks.
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公开(公告)号：US20220264144A1
公开(公告)日：2022-08-18
申请号：US17729284
申请日：2022-04-26
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/52 , H04N19/176 , H04N19/184 , H04N19/70
Abstract: A method for video processing is provided. The method includes determining that a conversion between a current video block of a video and a coded representation of the current video block is based on a non-affine inter AMVR mode; and performing the conversion based on the determining, wherein the coded representation of the current video block is based on a context based coding, and wherein a context used for coding the current video block is modeled without using an affine AMVR mode information of a neighboring block during the conversion.
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公开(公告)号：US20220264125A1
公开(公告)日：2022-08-18
申请号：US17732849
申请日：2022-04-29
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/186 , H04N19/119 , H04N19/55 , H04N19/176 , H04N19/52 , H04N19/136
Abstract: Devices, systems and methods for sub-block based prediction are described. In a representative aspect, a method for video encoding includes partitioning, based on a first rule, a luma component of a block of video data into a first set of sub-blocks. The method also includes partitioning, based on a second rule, a first chroma component of the block of video data into a second set of sub-blocks. The first and the second set of sub-blocks include different numbers of sub-blocks. The method also includes performing a subsequent motion prediction based on the first and the second set of sub-blocks.
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公开(公告)号：US20220256197A1
公开(公告)日：2022-08-11
申请号：US17718880
申请日：2022-04-12
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/70 , H04N19/159 , H04N19/169 , H04N19/174
Abstract: An example method of video processing includes performing a conversion between a video including a video picture including one or more video units and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies that a first syntax element is included in a header of the video picture indicating allowed prediction types of at least some of the one or more video units in the video picture.
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Patent Agency Ranking
公开(公告)号：US20220248061A1
公开(公告)日：2022-08-04
申请号：US17717549
申请日：2022-04-11
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/70 , H04N19/174 , H04N19/132 , H04N19/463 , H04N19/139 , H04N19/105 , H04N19/176 , H04N19/52
Abstract: A method of video processing are described. The method includes determining, for a conversion between a video region of a picture of a video and a coded representation of the video, enablement status of a coding tool used to represent the video region in the coded representation; and performing the conversion according to the determination; wherein a first flag is included in a picture header to indicate the enablement status of the coding tool for the picture.
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公开(公告)号：US20220239950A1
公开(公告)日：2022-07-28
申请号：US17713104
申请日：2022-04-04
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/70 , H04N19/174 , H04N19/30 , H04N19/186 , H04N19/172
Abstract: An example method of video processing includes performing a conversion between a video and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies, in case a first syntax element is included in a first video unit in the bitstream representation, whether a corresponding second syntax element in a second video unit is included in the bitstream representation.
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公开(公告)号：US20220239912A1
公开(公告)日：2022-07-28
申请号：US17711319
申请日：2022-04-01
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/119 , H04N19/176 , H04N19/174 , H04N19/70
Abstract: An example method of video processing includes performing a conversion between a video comprising one or more pictures and a bitstream representation of the video. The bitstream representation is required to conform to a format rule that specifies that each picture is coded as one or more slices. The format rule prohibits samples in a picture from not being covered by any of the one or more slices.
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公开(公告)号：US20220217341A1
公开(公告)日：2022-07-07
申请号：US17698114
申请日：2022-03-18
Inventor： Jizheng XU , Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/117 , H04N19/12 , H04N19/167 , H04N19/172 , H04N19/105
Abstract: Adaptive resolution change and scalable coding for screen contents are described. One example is a method for video processing, comprising: determining, for a conversion between a picture or a video and a bitstream representation of the picture or the video, whether the picture or the video is native resolution based on an indication included in the bitstream representation; and performing the conversion based on the determination.
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公开(公告)号：US20220217340A1
公开(公告)日：2022-07-07
申请号：US17696560
申请日：2022-03-16
Inventor： Li ZHANG , Hongbin LIU , Kai ZHANG , Yue WANG
IPC: H04N19/117 , H04N19/70 , H04N19/174
Abstract: Methods, systems and devices for signaling the usage of adaptive loop filtering in image and video coding are described. An example method of video processing includes determining, for a conversion between a current region of a video and a bitstream representation of the video, whether a luma adaptive loop filter is used during the conversion and whether luma adaptive loop filter coefficients are included in the bitstream representation, wherein a single syntax element in the bitstream representation is indicative of use of the luma adaptive loop filter and signaling of the luma adaptive loop filter coefficients, and performing, based on the determining, the conversion.
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