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公开(公告)号：US12126805B2
公开(公告)日：2024-10-22
申请号：US17891800
申请日：2022-08-19
发明人： Kai Zhang , Li Zhang , Ye-kui Wang , Zhipin Deng , Kui Fan , Jizheng Xu , Hongbin Liu
IPC分类号： H04N19/103 , H04N19/119 , H04N19/129 , H04N19/157 , H04N19/169 , H04N19/172 , H04N19/174 , H04N19/70
CPC分类号： H04N19/129 , H04N19/103 , H04N19/119 , H04N19/157 , H04N19/172 , H04N19/174 , H04N19/1883 , H04N19/70
摘要： Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video picture that includes one or more tiles and one or more rectangular slices and a bitstream of the video according to a rule. The rule specifies that, for iteratively determining information about the one or more rectangular slices, a variable indicating a tile index is updated only for slices having indices that are smaller than a value equal to a number of slices in the video picture minus 1.
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公开(公告)号：US20240107013A1
公开(公告)日：2024-03-28
申请号：US18516447
申请日：2023-11-21
发明人： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang , Jizheng Xu
IPC分类号： H04N19/117 , H04N19/105 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/52 , H04N19/70 , H04N19/80
CPC分类号： H04N19/117 , H04N19/105 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/52 , H04N19/70 , H04N19/80
摘要： A method includes determining, for a conversion between a video block of a video and a bitstream of the video, a size of prediction block corresponding to the video block according to a rule. The method also includes performing the conversion based on the determining. The rule specifies that a first size of the prediction block is determined responsive to whether a prediction refinement using optical flow technique is used for coding the video block. The video block has a second size and is coded using an affine merge mode or an affine advanced motion vector prediction mode.
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公开(公告)号：US20240107006A1
公开(公告)日：2024-03-28
申请号：US18511593
申请日：2023-11-16
发明人： Zhipin Deng , Li Zhang , Kai Zhang , Ye-kui Wang , Kui Fan
IPC分类号： H04N19/105 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/167 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/196 , H04N19/30 , H04N19/52 , H04N19/547 , H04N19/573 , H04N19/70 , H04N19/82
CPC分类号： H04N19/105 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/167 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/196 , H04N19/30 , H04N19/52 , H04N19/547 , H04N19/573 , H04N19/70 , H04N19/82
摘要： Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video comprising a video picture that includes a video slice and a bitstream of the video. The bitstream conforms to a format rule specifying that, in case a slice type of the video slice is type P and temporal motion vector prediction is enabled, usage of reference picture resampling (RPR) for a reference picture in a collocated reference picture list is disabled. The reference picture is indicated by a reference index of a collocated picture of the video slice used for the temporal motion vector prediction.
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公开(公告)号：US20240089483A1
公开(公告)日：2024-03-14
申请号：US18508853
申请日：2023-11-14
发明人： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Ye-kui Wang
IPC分类号： H04N19/46 , H04N19/174 , H04N19/176 , H04N19/70
CPC分类号： H04N19/46 , H04N19/174 , H04N19/176 , H04N19/70
摘要： Devices, systems and methods related to digital video coding, and specifically, to signaling of slice types in video picture headers are described. One example method of video processing includes performing a conversion between a video including one or more video pictures including one or more slices and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that for a video picture of the one or more video pictures having all slices coded as I slices, P slice and B slice related syntax elements are omitted from a picture header for the video picture.
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公开(公告)号：US11930218B2
公开(公告)日：2024-03-12
申请号：US17898051
申请日：2022-08-29
发明人： Zhipin Deng , Ye-kui Wang , Li Zhang , Kai Zhang , Kui Fan
IPC分类号： H04N19/70 , H04N19/105 , H04N19/11 , H04N19/122 , H04N19/132 , H04N19/139 , H04N19/186 , H04N19/61 , H04N19/107 , H04N19/172 , H04N19/174 , H04N19/169 , H04N19/30 , H04N19/117 , H04N19/196
CPC分类号： H04N19/70 , H04N19/105 , H04N19/107 , H04N19/11 , H04N19/117 , H04N19/122 , H04N19/132 , H04N19/139 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/188 , H04N19/196 , H04N19/30 , H04N19/61
摘要： Methods, systems, apparatus for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies whether a syntax element in a sequence parameter set (SPS) based on a value of a general constraint flag.
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公开(公告)号：US11871039B2
公开(公告)日：2024-01-09
申请号：US17896532
申请日：2022-08-26
发明人： Jizheng Xu , Li Zhang , Ye-kui Wang , Kai Zhang , Zhipin Deng
IPC分类号： H04N11/02 , H04N19/70 , H04N19/132 , H04N19/174 , H04N19/18
CPC分类号： H04N19/70 , H04N19/132 , H04N19/174 , H04N19/18
摘要： Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video including a video unit and a bitstream of the video according to a rule, wherein the rule specifies whether a transform skip residual coding operation is enabled for the video unit, and wherein one or more syntax elements are included in the bitstream at a video segment level indicative of whether the transform skip residual coding operation is enabled for the video unit.
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公开(公告)号：US20230099966A1
公开(公告)日：2023-03-30
申请号：US17992236
申请日：2022-11-22
发明人： Ye-kui Wang , Zhipin Deng , Kai Zhang , Li Zhang
IPC分类号： H04N19/46 , H04N19/70 , H04N19/169 , H04N19/174
摘要： Embodiments for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video having one or more video pictures in a video layer and a bitstream of the video according to a rule, wherein the rule specifies that, in a process of sub-bitstream extraction, removal of (i) a video coding layer (VCL) network abstraction layer (NAL) unit, (ii) filler data NAL units associated with the VCL NAL unit, and (iii) filler payload supplemental enhancement information (SEI) messages associated with the VCL NAL unit is performed regardless of an availability of an external means used to replace a parameter set that is removed during the sub-bitstream extraction.
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公开(公告)号：US20230027478A1
公开(公告)日：2023-01-26
申请号：US17898073
申请日：2022-08-29
发明人： Zhipin Deng , Ye-kui Wang , Li Zhang , Kai Zhang , Kui Fan
IPC分类号： H04N19/70 , H04N19/122 , H04N19/186 , H04N19/132 , H04N19/139 , H04N19/105 , H04N19/11 , H04N19/61
摘要： Methods, systems, apparatuses for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies to include, in a general constraint syntax structure associated with the video, one or more general constraint flags indicating whether corresponding syntax elements are included in a sequence parameter set (SPS) and/or a picture parameter set (PPS) and/or a picture header (PH) and/or a slice header (SH) or to constrain values of the syntax elements in the SPS and/or the PPS and/or the PH and/or the SH.
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公开(公告)号：US20230007307A1
公开(公告)日：2023-01-05
申请号：US17892866
申请日：2022-08-22
发明人： Kai Zhang , Li Zhang , Ye-kui Wang , Zhipin Deng , Kui Fan , Jizheng Xu , Hongbin Liu
IPC分类号： H04N19/70 , H04N19/174 , H04N19/96
摘要： A method includes performing a conversion between a video including a video picture including one or more tiles and a bitstream of the video. The video picture refers to a picture parameter set, and the picture parameter set conforms to a format rule specifying that the picture parameter set includes a list of column widths for N tile columns, where N is an integer. An (N−1)-th tile column exists in the video picture and the (N−1)-th tile column has a width that is equal to an (N−1)-th entry in a list of explicitly included tile column widths plus one number of coding tree blocks.
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公开(公告)号：US20220400284A1
公开(公告)日：2022-12-15
申请号：US17887283
申请日：2022-08-12
发明人： Zhipin Deng , Li Zhang , Kai Zhang , Ye-kui Wang , Kui Fan
IPC分类号： H04N19/547 , H04N19/70 , H04N19/174
摘要： A method includes performing a conversion between a video comprising a video picture that includes one or more subpictures and a bitstream of the video according to a format rule. The format rule specifies that whether each of the one or more subpictures in the video picture includes a single slice is determined based on a constraint flag.
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