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公开(公告)号：US11902518B2
公开(公告)日：2024-02-13
申请号：US17835647
申请日：2022-06-08
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Ye-kui Wang
IPC: H04N19/176 , H04N19/70 , H04N19/117 , H04N19/174 , H04N19/80 , H04N19/186
CPC classification number: H04N19/117 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/80
Abstract: An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.
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公开(公告)号：US20240048735A1
公开(公告)日：2024-02-08
申请号：US18463416
申请日：2023-09-08
IPC: H04N19/186 , H04N19/117 , H04N19/82 , H04N19/96
CPC classification number: H04N19/186 , H04N19/117 , H04N19/82 , H04N19/96
Abstract: Methods, systems and apparatus for video processing including coding or decoding are described. One example method of video processing includes determining, for a conversion between a video region of a chroma component of a video and a bitstream of the video, a manner of applying a cross-component adaptive loop filtering (CC-ALF) operation to a first sample of the chroma component based on a position of a second sample associated with the first sample. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20240048710A1
公开(公告)日：2024-02-08
申请号：US18149333
申请日：2023-01-03
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/96
CPC classification number: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/96
Abstract: Devices, systems, and methods for palette mode coding are described. An exemplary method for video processing includes performing a conversion between a block of a video region of a video and a bitstream representation of the video. The bitstream representation is processed according to a first format rule that specifies whether a first indication of usage of a palette mode is signaled for the block and a second format rule that specifies a position of the first indication relative to a second indication of usage of a prediction mode for the block.
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公开(公告)号：US20240048701A1
公开(公告)日：2024-02-08
申请号：US18486375
申请日：2023-10-13
Inventor： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
IPC: H04N19/119 , H04N19/167 , H04N19/96 , H04N19/176 , H04N19/70
CPC classification number: H04N19/119 , H04N19/167 , H04N19/96 , H04N19/176 , H04N19/70
Abstract: Systems, methods, and an apparatus for video processing are described. A video processing method includes determining an application of a partitioning scheme to a video block positioned at a boundary of a video unit based on a rule, and performing a conversion between a visual media data and a bitstream based on the application of the partitioning scheme to the video block.
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公开(公告)号：US11895328B2
公开(公告)日：2024-02-06
申请号：US17238639
申请日：2021-04-23
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/583 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/513 , H04N19/139 , H04N19/196
CPC classification number: H04N19/583 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/513 , H04N19/521
Abstract: The present disclosure relates to improvement on overlapped block motion compensation. A method for video processing comprises: determining, during a conversion between a current block and a bitstream representation of the current block, a motion vector for a first sub-block inside the current block; using overlapped block motion compensation (OBMC) mode to perform the conversion; wherein the OBMC mode uses intermediate prediction values of the first sub-block based on the motion vector of the first sub-block and prediction values of at least a second video unit that is neighboring the first sub-block to generate final prediction values for the first sub-block; wherein a sub-block size of the first sub-block is based on block size, block shape, motion information, or reference picture of the current block.
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Patent Agency Ranking
公开(公告)号：US20240040144A1
公开(公告)日：2024-02-01
申请号：US18484912
申请日：2023-10-11
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/52 , H04N19/176
CPC classification number: H04N19/52 , H04N19/176
Abstract: Devices, systems, and methods for unified rounding in sub-block based prediction are described. In a representative aspect, a method of video processing includes generating, for a processing of a current block of video, a pairwise merge candidate based on a pair of motion candidates, and performing, based on the pairwise merge candidate, a conversion between the current block and a bitstream representation of the video. In another representative aspect, a method of video processing includes generating, for a current block of video coded using a geometry partition mode, a uni-prediction motion candidate based on a scaled motion vector and a ListO motion vector, and performing, based on the uni-prediction motion candidate, a conversion between the current block and a bitstream representation of the video.
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公开(公告)号：US11889108B2
公开(公告)日：2024-01-30
申请号：US17225504
申请日：2021-04-08
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/577 , H04N19/105 , H04N19/119 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/117 , H04N19/513 , H04N19/132
CPC classification number: H04N19/577 , H04N19/105 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/513 , H04N19/593
Abstract: 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：US20240031613A1
公开(公告)日：2024-01-25
申请号：US18476710
申请日：2023-09-28
Inventor： Kai Zhang , Li Zhang , Zhipin Deng , Na Zhang , Yang Wang
Abstract: A mechanism and method for processing video data is disclosed. The video processing method includes determining whether to enable a second partitioning scheme for coding of a current video unit according to a rule. The method includes performing a conversion between a video media data and a bitstream based on the rule.
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公开(公告)号：US11876993B2
公开(公告)日：2024-01-16
申请号：US17356175
申请日：2021-06-23
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang , Na Zhang
IPC: H04N19/46 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/126 , H04N19/107 , H04N19/513 , H04N19/58 , H04N19/96
CPC classification number: H04N19/46 , H04N19/105 , H04N19/107 , H04N19/126 , H04N19/159 , H04N19/176 , H04N19/521 , H04N19/58 , H04N19/96
Abstract: The present application relates to signaling of combined intra-inter prediction. A method for processing video includes: coding, during a conversion between a current video block in a video data and a bitstream representation of the current video block, a combined inter-intra prediction (CIIP) flag for the current video block by a context model based coding without referring to a CIIP flag of one or more neighboring video blocks to the current video block, and performing, at least by applying the combined inter-intra prediction (CIIP) flag of the current video block, the conversion.
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公开(公告)号：US11876932B2
公开(公告)日：2024-01-16
申请号：US17557454
申请日：2021-12-21
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N11/02 , H04N19/52 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/139 , H04N19/577 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/46 , H04N19/513
CPC classification number: H04N19/52 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/513 , H04N19/577
Abstract: One example method of video processing includes implementing, by a processor, a decoder-side motion vector derivation (DMVD) scheme for motion vector refinement during a conversion between a current video block and a bitstream representation of the current video block by deriving parameters based on a deriving rule. The conversion may include compressing the current video block into the bitstream representation or uncompressing the bitstream representation into pixel values of the current video block.
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