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公开(公告)号：US20220191490A1
公开(公告)日：2022-06-16
申请号：US17682656
申请日：2022-02-28
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Na ZHANG , Yue WANG
IPC: H04N19/119 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/70
Abstract: Methods, devices, and systems related to video processing are disclosed. In one example aspect, a method of video processing includes performing a conversion between a block of a current picture of a video and a coded representation of the video using an intra-subblock partitioning (ISP) mode. A prediction is determined for each sub-partition using an intra-prediction process based on samples in the current picture using the ISP mode. The block is partitioned into multiple sub-partitions including a first sub-partitions having a same top-left corner position as a top-left corner position of the block.
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公开(公告)号：US20250039429A1
公开(公告)日：2025-01-30
申请号：US18913897
申请日：2024-10-11
Inventor： Na ZHANG , Jizheng XU , Kai ZHANG , Mehdi SALEHIFAR , Li ZHANG
IPC: H04N19/513 , H04N19/137 , H04N19/139 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current video block of a video and a bitstream of the video, that a first prediction mode is applied to the current block, determining, in the prediction mode, a block vector for the current video block based on at least one motion candidate and block vector difference information; and performing the conversion based on the block vector.
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公开(公告)号：US20250016335A1
公开(公告)日：2025-01-09
申请号：US18893479
申请日：2024-09-23
Inventor： Jizheng XU , Na ZHANG
IPC: H04N19/176 , H04N19/136 , H04N19/196
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a video unit of a video and a bitstream of the video, a block vector of the video unit based on a base block vector candidate and a parameter related to a block vector difference; and performing the conversion based on the block vector.
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公开(公告)号：US20240388694A1
公开(公告)日：2024-11-21
申请号：US18766530
申请日：2024-07-08
Inventor： Zhipin DENG , Kai ZHANG , Li ZHANG , Na ZHANG
IPC: H04N19/105 , H04N19/139 , H04N19/184 , H04N19/513 , H04N19/70
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a video unit of a video and a bitstream of the video unit, a set of weights for a first prediction and a second prediction of the video unit based on a decoder derived process; combining the first prediction and the second prediction based on the set of weights; and performing the conversion based on the combined first and second predictions.
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公开(公告)号：US20240373042A1
公开(公告)日：2024-11-07
申请号：US18288170
申请日：2022-04-26
Inventor： Zhipin DENG , Li ZHANG , Kai ZHANG , Na ZHANG
IPC: H04N19/189 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a current video block of a video and a bitstream of the video, at least one coding tool applied to a current video unit associated with the current video block; and performing the conversion based on a refinement process applied to the current video unit depending on the at least one coding tool. Compared with the conventional solution, the proposed method can advantageously improve the coding performance and efficiency.
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Patent Agency Ranking
公开(公告)号：US20240364911A1
公开(公告)日：2024-10-31
申请号：US18763405
申请日：2024-07-03
Inventor： Mehdi SALEHIFAR , Yuwen HE , Kai ZHANG , Na ZHANG , Li ZHANG
IPC: H04N19/46 , H04N19/13 , H04N19/176
CPC classification number: H04N19/46 , H04N19/13 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: performing a conversion between a current video block of a video and a bitstream of the video based on at least one flag of: a first flag indicating whether a merge mode with motion vector difference (MMVD) is used for the current video block, or a second flag indicating whether an affine MMVD is used for the current video block, wherein the at least one flag is bypass coded or is coded with at least one context determined from a plurality of contexts. Thereby, the proposed method can advantageously improve coding efficiency and coding quality.
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公开(公告)号：US20240259591A1
公开(公告)日：2024-08-01
申请号：US18561667
申请日：2022-05-17
Inventor： Zhipin DENG , Li ZHANG , Kai ZHANG , Na ZHANG
IPC: H04N19/577 , H04N19/109 , H04N19/139 , H04N19/176 , H04N19/184 , H04N19/52
CPC classification number: H04N19/577 , H04N19/109 , H04N19/139 , H04N19/176 , H04N19/184 , H04N19/52
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a target video block of a video and a bitstream of the video, bilateral matching to refine uni-directional motion information for the target video block, to obtain refined motion information; and performing the conversion based on the refined motion information. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and performance.
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公开(公告)号：US20240223756A1
公开(公告)日：2024-07-04
申请号：US18607244
申请日：2024-03-15
IPC: H04N19/11 , H04N19/105 , H04N19/107 , H04N19/119 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/52 , H04N19/533 , H04N19/593
CPC classification number: H04N19/11 , H04N19/105 , H04N19/107 , H04N19/119 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/52 , H04N19/533 , H04N19/593
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, an intra block copy (IBC)-based mode to be applied for the target video block, the IBC-based mode being based on at least one of the following: an IBC merge mode with block vector difference (MBVD), a combined prediction mode based on an IBC mode and at least one further prediction mode, an IBC mode based on triangle partitioning, an IBC mode based on geometric partitioning, an IBC advanced motion vector prediction (AMVP) mode based on template matching (TM), or an IBC merge mode based on TM; and performing the conversion based on the IBC-based mode.
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公开(公告)号：US20240196001A1
公开(公告)日：2024-06-13
申请号：US18287602
申请日：2022-04-21
Inventor： Zhipin DENG , Li ZHANG , Kai ZHANG , Na ZHANG
IPC: H04N19/52 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/583
CPC classification number: H04N19/52 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/583
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a target video unit in a target picture of a video and a bitstream of the video, second coding data of the target video unit based on first coding data of the target video and a refinement process, the first coding data being coded by a target coding mode; and performing the conversion based on the second coding data. Compared with the conventional solution, the proposed method can advantageously improve the coding performance and efficiency.
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公开(公告)号：US20240187633A1
公开(公告)日：2024-06-06
申请号：US18287605
申请日：2022-04-21
Inventor： Zhipin DENG , Li ZHANG , Kai ZHANG , Na ZHANG
IPC: H04N19/513 , H04N19/176 , H04N19/186 , H04N19/70
CPC classification number: H04N19/513 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a target video unit in a target picture of a video and a bitstream of the video, second coding data of the target video unit based on first coding data of the target video unit and at least one refinement process, the at least one refinement process being applied based on a predefined criterion; and performing the conversion based on the second coding data. Compared with the conventional solution, the proposed method can advantageously improve the coding performance and efficiency.
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