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公开(公告)号：US11909966B2
公开(公告)日：2024-02-20
申请号：US17723089
申请日：2022-04-18
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/119 , H04N19/117 , H04N19/132 , H04N19/82 , H04N19/186 , H04N19/46 , H04N19/176
CPC classification number: H04N19/119 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/82
Abstract: An example method of video processing includes performing a conversion between a picture of a video and a bitstream representation of the video. The picture includes one or more sub-pictures, and the bitstream representation conforms to a format rule that specifies that a length of a syntax element is equal to Ceil(Log 2(SS)) bits. SS is greater than 0, and the syntax element indicating a horizontal or a vertical position of a top-left corner of a coding tree unit of a sub-picture of the picture.
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公开(公告)号：US11909951B2
公开(公告)日：2024-02-20
申请号：US17374160
申请日：2021-07-13
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/103 , H04N19/117 , H04N19/157 , H04N19/176 , H04N19/184 , H04N19/159 , H04N19/52 , H04N19/513
CPC classification number: H04N19/103 , H04N19/117 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/52 , H04N19/513
Abstract: A method for processing video data is provided to include: determining whether a sharing of merge list information is enabled for a merge sharing node that corresponds to an ancestor node in a coding unit split tree to allow leaf coding units of the ancestor node in the coding unit split tree to use the merge list information; and performing a conversion between a current video block of a video and a bitstream of the video based on the determining.
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公开(公告)号：US20240056599A1
公开(公告)日：2024-02-15
申请号：US18486641
申请日：2023-10-13
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/52 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/51 , H04N19/593
CPC classification number: H04N19/52 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/51 , H04N19/593
Abstract: The present disclosure relates to interaction between intra block copy mode and inter prediction tools. A method for video processing includes determining that an intra block copy (IBC) mode is applied to a current video block of a video. In the IBC mode, at least one reference picture used by the current video block is a current picture where the current video block is located. The method also includes making a decision regarding a disabling of a specific coding mode for the current block. The specific coding mode uses a motion vector and a non-current picture to derive a prediction of a video block. The method further includes performing, based on the decision, a conversion between the current video block and the bitstream representation.
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公开(公告)号：US20240056568A1
公开(公告)日：2024-02-15
申请号：US18489195
申请日：2023-10-18
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/159 , H04N19/176
CPC classification number: H04N19/105 , H04N19/159 , H04N19/176
Abstract: A method of video processing includes maintaining, for a conversion between a current video block of a current picture of a visual media data and a bitstream representation of the visual media data, a buffer including reference samples from the current picture for a derivation of prediction samples of the current video block. One or more reference samples in the buffer that are marked unavailable for the derivation have values outside of a pixel value range.
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公开(公告)号：US20240048699A1
公开(公告)日：2024-02-08
申请号：US18320782
申请日：2023-05-19
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/119 , H04N19/132 , H04N19/176 , H04N19/70 , H04N19/117 , H04N19/186 , H04N19/46 , H04N19/82
CPC classification number: H04N19/119 , H04N19/132 , H04N19/176 , H04N19/82 , H04N19/117 , H04N19/186 , H04N19/46 , H04N19/70
Abstract: An example method of video processing includes: determining, for a conversion between a chroma block of a current processing unit of a current subpicture of a current picture of a video and a bitstream of the video, that a cross component adaptive loop filtering operation is applied to the chroma block, wherein the current picture comprises one or more subpictures; and performing the conversion based on the determining, wherein in the cross component adaptive loop filtering operation, a chroma sample of the chroma block is filtered based on information of luma samples, and wherein one or more luma samples located outside the current processing unit are excluded from the filtering of the chroma sample.
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Patent Agency Ranking
公开(公告)号：US20240040122A1
公开(公告)日：2024-02-01
申请号：US18485531
申请日：2023-10-12
Inventor： Kai Zhang , Li Zhang , Zhipin Deng
IPC: H04N19/122 , H04N19/61 , H04N19/96 , H04N19/18 , H04N19/176
CPC classification number: H04N19/122 , H04N19/61 , H04N19/96 , H04N19/18 , H04N19/176
Abstract: A mechanism for processing video data is disclosed. A sign prediction usage for one or more residual coefficients in a block is determined based on dimensions of the block. A conversion is then performed between a visual media data and a bitstream based on the residual coefficients in the block.
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公开(公告)号：US20240040119A1
公开(公告)日：2024-02-01
申请号：US18483111
申请日：2023-10-09
Inventor： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
IPC: H04N19/119 , H04N19/184 , H04N19/96 , H04N19/176 , H04N19/136 , H04N19/70
CPC classification number: H04N19/119 , H04N19/184 , H04N19/96 , H04N19/176 , H04N19/136 , H04N19/70 , H04N19/124
Abstract: A mechanism and method for processing video data is disclosed. The video processing method includes applying a first partitioning scheme to a parent video unit to obtain a current video unit and performing a conversion between a video media data and a bitstream based on application of the first partitioning scheme.
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公开(公告)号：US20240022754A1
公开(公告)日：2024-01-18
申请号：US18472353
申请日：2023-09-22
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/50 , H04N19/117 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/157 , H04N19/593
CPC classification number: H04N19/50 , H04N19/117 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/157 , H04N19/593
Abstract: A method for video bitstream processing includes generating, using a first video block derived from a third video block of a first component and having a first size, a prediction block for a second video block of a video related to a second component, where the first component is different from the second component, and where the second video block has a second size that is different from the first size. The method also includes performing, using the prediction block, a conversion between the second video block and a bitstream representation of the video according to a two-step cross-component prediction mode (TSCPM).
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公开(公告)号：US20240022722A1
公开(公告)日：2024-01-18
申请号：US18476957
申请日：2023-09-28
Inventor： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
IPC: H04N19/119 , H04N19/105 , H04N19/132 , H04N19/176
CPC classification number: H04N19/119 , H04N19/105 , H04N19/132 , H04N19/176
Abstract: Systems, methods, apparatus for video processing are described. A video processing method includes determining, for a conversion between a current block of a video and a bitstream of the video, whether or which a partitioning scheme is enabled for coding of the current block according to a rule, and performing the conversion based on the determining. The rule is based on one or more neighboring blocks of the current block.
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公开(公告)号：US11877002B2
公开(公告)日：2024-01-16
申请号：US17457868
申请日：2021-12-06
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/56 , H04N19/52 , H04N19/159 , H04N19/176 , H04N19/137
CPC classification number: H04N19/52 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/56
Abstract: A method of video processing is provided to include maintaining one or more tables, wherein each table includes one or more motion candidates and each motion candidate is associated with corresponding motion information; performing a conversion between a current block and a bitstream representation of a video including the current block by using motion information in a table; and updating, after performing of the conversion, one or more tables based on M sets of additional motion information associated with the current block, M being an integer.
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