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公开(公告)号：US20220182675A1
公开(公告)日：2022-06-09
申请号：US17406242
申请日：2021-08-19
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/61 , H04N19/176 , H04N19/124 , H04N19/186 , H04N19/159 , H04N19/11 , H04N19/132 , H04N19/70
Abstract: A video processing method includes determining, for a conversion between a block of a video and a bitstream representation of the video, that a secondary transform with a reduced dimension dimension (e.g., an inverse low frequency non-separable transform) is applicable to a single sub-block of the block in case a dimension of the block satisfies a condition. The secondary transform is performed between a forward primary transform and a quantization step or between a de-quantization step and an inverse primary transform. The reduced dimension is reduced from a dimension of the block. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20220174322A1
公开(公告)日：2022-06-02
申请号：US17667380
申请日：2022-02-08
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/70 , H04N19/157 , H04N19/169 , H04N19/176
Abstract: A method of video processing includes performing a conversion between a video comprising a video picture that includes multiple sub-pictures and multiple video blocks, and a coded representation of the video according to a rule. The rule specifies that a boundary between any two sub-pictures is also a boundary between two video blocks.
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公开(公告)号：US20220174280A1
公开(公告)日：2022-06-02
申请号：US17675796
申请日：2022-02-18
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/12 , H04N19/176 , H04N19/136 , H04N19/70 , H04N19/18 , H04N19/124 , H04N19/30 , H04N19/157 , H04N19/167 , H04N19/61
Abstract: A video processing method includes performing a conversion between a video block of a video and a coded representation of the video, wherein the coded representation conforms to a format rule, wherein the format rule specifies that applicability of a transform skip mode to the video block is determined by a coding condition of the video block, wherein the format rule specifies that a syntax element indicative of applicability of the transform skip mode is omitted from the coded representation, and wherein the transform skip mode includes, skipping applying a forward transform to at least some coefficients prior to encoding into the coded representation, or during decoding, skipping applying an inverse transform to at least some coefficients prior to decoding from the coded representation.
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公开(公告)号：US20220159301A1
公开(公告)日：2022-05-19
申请号：US17556689
申请日：2021-12-20
Inventor： Li ZHANG , Jizheng XU , Kai ZHANG , Hongbin LIU , Weijia ZHU , Yue WANG
IPC: H04N19/61 , H04N19/169 , H04N19/186 , H04N19/119 , H04N19/70 , H04N19/159 , H04N19/11 , H04N19/124 , H04N19/132 , H04N19/105
Abstract: A method of video processing is provided. The method includes determining, due to a dual tree partitioning structure being used for a conversion between a video unit and a coded representation of the video unit, that use of an adaptive color space transformation (ACT) tool is disabled for the video unit; and performing, based on the determining, the conversion by disabling the ACT tool for the video unit, wherein the use of the ACT tool comprises: converting, during encoding a representation of a visual signal from a first color domain to a second color domain, or converting during decoding, a representation of a visual signal from the second color domain to the first color domain.
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公开(公告)号：US20220159241A1
公开(公告)日：2022-05-19
申请号：US17585704
申请日：2022-01-27
Inventor： Weijia ZHU , Li ZHANG , Jizheng XU , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/186 , H04N19/176
Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a number of intra-coded neighboring blocks of the current block for a combined inter and intra prediction mode according to a rule that specifies a manner of treating a block coded using a palette coding mode in counting the number of intra-coded neighboring blocks for the combined inter and intra prediction mode. The method also includes performing the conversion based on the determining.
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Patent Agency Ranking
公开(公告)号：US20220150541A1
公开(公告)日：2022-05-12
申请号：US17587768
申请日：2022-01-28
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/593 , H04N19/176 , H04N19/11 , H04N19/132 , H04N19/117 , H04N19/186
Abstract: A method of video processing is described. The method includes: determining, based on a coding mode of a current video block of a video, whether a position dependent intra prediction combination (PDPC) method is used for coding the current video block based on a first rule, and performing a conversion between the current video block and a coded representation of the video according to the determining, wherein the PDPC method combines neighboring samples with a prediction signal of the current video block to generate a refined prediction signal of the current video block.
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公开(公告)号：US20220150475A1
公开(公告)日：2022-05-12
申请号：US17580314
申请日：2022-01-20
Inventor： Weijia ZHU , Li ZHANG , Jizheng XU , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/186 , H04N19/176
Abstract: Devices, systems and methods for video processing are described. An exemplary method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, that a neighboring block of the current block that is coded in a palette mode is processed as an intra-coded block having a default mode during a construction of a list of most probable modes (MPM) candidates of the current block in case the neighboring block is located above or left of the current block. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20220109845A1
公开(公告)日：2022-04-07
申请号：US17554696
申请日：2021-12-17
Inventor： Li ZHANG , Jizheng XU , Kai ZHANG , Hongbin LIU , Weijia ZHU
IPC: H04N19/13 , H04N19/176 , H04N19/70
Abstract: Restrictions on number of context coded bins are described. A method for video processing includes applying, for a conversion between a video and a bitstream representation of the video, control on maximum number of context coded bins per predetermined unit which is associated with the video; and performing the conversion based on the control.
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公开(公告)号：US20220086481A1
公开(公告)日：2022-03-17
申请号：US17534968
申请日：2021-11-24
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Jizheng XU , Yue WANG
IPC: H04N19/52 , H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/577 , H04N19/593
Abstract: Difference calculation based on partial position is described. In a representative aspect, a method of video processing comprising: calculating, during a conversion between a current block of video and a bitstream representation of the current block, differences between two reference blocks associated with the current block or differences between two reference sub-blocks associated with a sub-block within the current block based on representative positions of the reference blocks or representative positions of the reference sub-blocks; and performing the conversion based on the differences.
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公开(公告)号：US20220070483A1
公开(公告)日：2022-03-03
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 , H04N19/159 , H04N19/105 , H04N19/176
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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