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公开(公告)号：US20240121383A1
公开(公告)日：2024-04-11
申请号：US18535903
申请日：2023-12-11
Inventor： Zhipin DENG , Kai ZHANG , Li ZHANG
IPC: H04N19/105 , H04N19/107 , H04N19/159 , H04N19/176 , H04N19/50 , H04N19/70
CPC classification number: H04N19/105 , H04N19/107 , H04N19/159 , H04N19/176 , H04N19/50 , H04N19/70
Abstract: Embodiments of the disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target block of a video and a bitstream of the target block, a target weight table from a plurality of weight tables for multi-hypothesis prediction, the target weight table being used for a hypothesis of the target block, the target block being a multiple hypothesis prediction block; and performing the conversion based on the target weight table.
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公开(公告)号：US20220272353A1
公开(公告)日：2022-08-25
申请号：US17713063
申请日：2022-04-04
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/137 , H04N19/132 , H04N19/186 , H04N19/176 , H04N19/70 , H04N19/46
Abstract: An example method of video processing includes performing a conversion between a block of a chroma component of a video and a bitstream representation of the video using a partitioning mode coding tool in which a final prediction of the chroma block is determined by blending predictions of the chroma block using weights that are based on the partitions. During the conversion, the weights are determined based on a type of chroma sample locations in the chroma component of the block.
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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：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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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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Patent Agency Ranking
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：US20220210460A1
公开(公告)日：2022-06-30
申请号：US17682751
申请日：2022-02-28
Inventor： Zhipin DENG , Li ZHANG , Hongbin LIU , Kai ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/51 , H04N19/176 , H04N19/186 , H04N19/119 , H04N19/137 , H04N19/105 , H04N19/132 , H04N19/70
Abstract: A method of video processing is described. The method includes determining chroma weights used for determining a chroma prediction block of a chroma block of a current block of a video by blending predictions of the chroma block according to a rule, and performing a conversion between the current block and a coded representation of the video according to the determining, wherein the rule specifies that the chroma weights are determined from luma weights of a collocated luma block of the current block; wherein the current block is coded with a geometric partitioning mode.
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公开(公告)号：US20220191492A1
公开(公告)日：2022-06-16
申请号：US17689320
申请日：2022-03-08
Inventor： Jizheng XU , Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Yue WANG
IPC: H04N19/122 , H04N19/176 , H04N19/30 , H04N19/18 , H04N19/60 , H04N19/46 , H04N19/132 , H04N19/172 , H04N19/186 , H04N19/103
Abstract: Methods, systems, and devices for coefficient scaling for high-precision image and video coding are described. A example method of video processing includes performing a conversion between a current block of a video and a bitstream representation of the video according to a rule, wherein the rule specifies that the conversion includes during encoding, skipping applying a forward transform to residual coefficients of the current block prior to including in the bitstream representation, or during decoding, reconstructing residual coefficients of the current block from the bitstream representation without applying an inverse transform, and wherein the rule further specifies that a scale factor is applied to the residual coefficients independent of a size of the current block.
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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：US20220166985A1
公开(公告)日：2022-05-26
申请号：US17665275
申请日：2022-02-04
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/157 , H04N19/172 , H04N19/119 , H04N19/30 , H04N19/70 , H04N19/167 , H04N19/103
Abstract: A method of video processing includes performing a conversion between a video unit of a video and a coded representation of the video using at least a video picture. Only one of a sub-picture coding mode or a resolution-changing coding mode is enabled for the video unit. The sub-picture coding mode is a mode in which the video picture is divided into multiple sub-pictures, and the resolution-changing coding mode is a mode in which a resolution of the video picture is adjusted during the conversion.
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