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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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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：US20220217341A1
公开(公告)日：2022-07-07
申请号：US17698114
申请日：2022-03-18
Inventor： Jizheng XU , Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/117 , H04N19/12 , H04N19/167 , H04N19/172 , H04N19/105
Abstract: Adaptive resolution change and scalable coding for screen contents are described. One example is a method for video processing, comprising: determining, for a conversion between a picture or a video and a bitstream representation of the picture or the video, whether the picture or the video is native resolution based on an indication included in the bitstream representation; and performing the conversion based on the determination.
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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：US20220210408A1
公开(公告)日：2022-06-30
申请号：US17694253
申请日：2022-03-14
Applicant: Bytedance Inc.
Inventor： Weijia ZHU , Li ZHANG , Jizheng XU
IPC: H04N19/117 , H04N19/132 , H04N19/186 , H04N19/176
Abstract: An example method of video processing includes determining, for a conversion between a block of a chroma component of a video and a bitstream representation of the video, whether or how to apply a filtering process to an edge of the block based on a first quantization information for a first video region comprising samples on one side of the edge and/or a second quantization information for a second video region comprising samples on the other side of the edge according to a rule that is based on a coding mode applicable to the block for coding the samples on the one side or the samples on the other side of the edge. The rule specifies that multiple QP offsets at different video unit levels are used to determine the first quantization information or the second quantization information. The method also includes performing the conversion based on the determining.
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Patent Agency Ranking
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：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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公开(公告)号：US20220166971A1
公开(公告)日：2022-05-26
申请号：US17665242
申请日：2022-02-04
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/70
Abstract: A method of video processing includes determining, for a conversion between a current block of a first picture of a video and a bitstream representation of the video, a motion candidate based on motion information from a second picture according to a rule. The rule specifies that a position from which the motion information is accessed is constrained to be within a specific subpicture of the second picture. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20220159246A1
公开(公告)日：2022-05-19
申请号：US17665220
申请日：2022-02-04
Inventor： Kai ZHANG , Zhipin DENG , Hongbin LIU , Li ZHANG , Jizheng XU
IPC: H04N19/105 , H04N19/132 , H04N19/186 , H04N19/176 , H04N19/70
Abstract: A method of video processing includes performing a conversion between a video comprising a picture that includes multiple sub-pictures and a coded representation of the video using a coding mode according to a rule. The rule specifies that certain stored information about a previous sub-picture is reset prior to processing each next sub-picture of the multiple sub-pictures.
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公开(公告)号：US20220150476A1
公开(公告)日：2022-05-12
申请号：US17582351
申请日：2022-01-24
Inventor： Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/169 , H04N19/176
Abstract: A method for video processing is described. The method comprises: making a decision, for a conversion between a current video block of a video picture of a video and a coded representation of the video, regarding a size of a reference region of the video picture from which reference samples are used for predicting the current video block, based on a size of a virtual pipeline data unit (VPDU), a size of a coding tree block (CTB), or a size of a coding tree unit (CTU); and performing the conversion based on the decision.
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