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公开(公告)号：US11889119B2
公开(公告)日：2024-01-30
申请号：US17897943
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, and 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, wherein the format rule specifies that values of one or more general constraint flags at a first level in the bitstream control occurrence of one or more syntax elements at a sequence parameter set (SPS) level or a picture header (PH) level or a slice header (SH) level.
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公开(公告)号：US20230345056A1
公开(公告)日：2023-10-26
申请号：US18342482
申请日：2023-06-27
IPC分类号： H04N19/96 , H04N19/119 , H04N19/146 , H04N19/176 , H04N19/436 , H04N19/132 , H04N19/186 , H04N19/30 , H04N19/70
CPC分类号： H04N19/96 , H04N19/119 , H04N19/146 , H04N19/176 , H04N19/436 , H04N19/132 , H04N19/186 , H04N19/30 , H04N19/70
摘要： Methods, systems, and devices for luma mapping with chroma scaling for video and image coding are disclosed. An example method of video processing includes performing, for a current region comprising a luma block, a first chroma block, and a second chroma block, a conversion between the current region of a video and a bitstream representation of the video according to a rule that specifies an order in which, during decoding, the first chroma block and the second chroma block are processed based on mapped sample values of the luma block.
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公开(公告)号：US20230269374A1
公开(公告)日：2023-08-24
申请号：US17994856
申请日：2022-11-28
IPC分类号： H04N19/12 , H04N19/176 , H04N19/18 , H04N19/129 , H04N19/124
CPC分类号： H04N19/12 , H04N19/18 , H04N19/124 , H04N19/129 , H04N19/176
摘要： Devices, systems and methods for digital video coding, which includes methods for transform design, are described. In a representative aspect, a method of video processing includes performing a conversion between a current video block of a video and a bitstream of the video based on a rule, wherein the rule specifies that a selection of a transform matrix set for performing a transform operation during the conversion is based on a low-frequency non-separable transform index indicated in the bitstream, wherein the rule specifies that the transform operation includes, during an encoding operation, coding the current video block into the bitstream by applying a forward transform on residual values of the current video block, or wherein the rule specifies that the transform operation includes, during a decoding operation, generating from the bitstream the current video block by applying an inverse transform to scaled coefficients indicated in the bitstream.
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公开(公告)号：US20230046629A1
公开(公告)日：2023-02-16
申请号：US17897943
申请日：2022-08-29
发明人： Zhipin Deng , Ye-kui Wang , Li Zhang , Kai Zhang , Kui Fan
IPC分类号： H04N19/117 , H04N19/70 , H04N19/196 , H04N19/169
摘要： Methods, systems, and 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, wherein the format rule specifies that values of one or more general constraint flags at a first level in the bitstream control occurrence of one or more syntax elements at a sequence parameter set (SPS) level or a picture header (PH) level or a slice header (SH) level.
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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：US20240121390A1
公开(公告)日：2024-04-11
申请号：US18523562
申请日：2023-11-29
IPC分类号： H04N19/12 , H04N19/124 , H04N19/129 , H04N19/176 , H04N19/18
CPC分类号： H04N19/12 , H04N19/124 , H04N19/129 , H04N19/176 , H04N19/18
摘要： Devices, systems and methods for digital video coding, which includes methods for transform design, are described. In a representative aspect, a method of video processing includes performing a conversion between a current video block of a video and a bitstream of the video based on a rule, wherein the rule specifies that a selection of a transform matrix set for performing a transform operation during the conversion is based on a low-frequency non-separable transform index indicated in the bitstream, wherein the rule specifies that the transform operation includes, during an encoding operation, coding the current video block into the bitstream by applying a forward transform on residual values of the current video block, or wherein the rule specifies that the transform operation includes, during a decoding operation, generating from the bitstream the current video block by applying an inverse transform to scaled coefficients indicated in the bitstream.
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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：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：US11917211B2
公开(公告)日：2024-02-27
申请号：US17892746
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： H04N11/02 , H04N19/96 , H04N19/184 , H04N19/70 , H04N19/174 , H04N19/119 , H04N19/129 , H04N19/172 , H04N19/176
CPC分类号： H04N19/96 , H04N19/119 , H04N19/129 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/184 , 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 including a video picture including a video tile including one or more slices and a bitstream of the video according to a rule. The rule specifies that a second slice in a tile that includes a first slice in a picture has a height that is represented in a unit of coding tree units. The first slice has a first slice index, and the second slice has a second slice index that is determined based on the first slice index and a number of explicitly provided slice heights in the video tile. The height of the second slice is determined based on the first slice index and the second slice index.
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公开(公告)号：US20230145133A1
公开(公告)日：2023-05-11
申请号：US18089672
申请日：2022-12-28
发明人： Kui Fan , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC分类号： H04N19/13 , H04N19/176 , H04N19/60 , H04N19/70 , H04N19/96
CPC分类号： H04N19/13 , H04N19/176 , H04N19/60 , H04N19/70 , H04N19/96
摘要： A video processing method is described. The method includes performing a conversion between a video region of a video and a coded representation of the video. The performing of the conversion includes configuring, based on a partition type of the video region, a context model for coding a first bin. The first bin and a second bin are included in a bin string corresponding to an index of a secondary transform tool. The index indicates an applicability of the secondary transform tool and/or a kernel information of the secondary transform tool. The secondary transform tool includes applying, during encoding, a forward secondary transform to an output of a forward primary transform applied to a residual of a video block prior to quantization, or applying, during decoding, an inverse secondary transform to an output of dequantization to the video block before applying an inverse primary transform.
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