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公开(公告)号：US20220159259A1
公开(公告)日：2022-05-19
申请号：US17585788
申请日：2022-01-27
发明人： Kui FAN , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC分类号： H04N19/13 , H04N19/96 , H04N19/60 , H04N19/176 , H04N19/70
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, wherein 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 included in a bin string corresponding to an index of a secondary transform tool, wherein the index indicates an applicability of the secondary transform tool and/or a kernel information of the secondary transform tool, and wherein 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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公开(公告)号：US20220210453A1
公开(公告)日：2022-06-30
申请号：US17696681
申请日：2022-03-16
IPC分类号： H04N19/30 , H04N19/132 , H04N19/186 , H04N19/176 , 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：US20240214565A1
公开(公告)日：2024-06-27
申请号：US18284511
申请日：2022-03-31
发明人： Hongbin LIU , Li ZHANG , Kui FAN , Xiaolong JIANG , Haibin YIN , Yuwen HE , Yingming FAN
IPC分类号： H04N19/117 , H04N19/137 , H04N19/172 , H04N19/176 , H04N19/80
CPC分类号： H04N19/117 , H04N19/137 , H04N19/172 , H04N19/176 , H04N19/80
摘要： Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining a reference picture for a target picture of a video; determining whether the reference picture is to be used for filtering the target picture based at least in part on a difference between the reference picture and the target picture; and in accordance with a determination that the reference picture is to be used for filtering the target picture, performing temporal filtering on the target picture based on the reference picture. Compared with the conventional solution, the proposed method can advantageously improve the coding speed and efficiency.
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公开(公告)号：US20220286674A1
公开(公告)日：2022-09-08
申请号：US17824386
申请日：2022-05-25
IPC分类号： H04N19/117 , H04N19/119 , H04N19/176 , H04N19/186
摘要： A method of video processing, including performing a conversion between a video block of a video component of a video and a bitstream of the video, where the video block includes sub-blocks, where a filtering tool is used during the conversion according to a rule, and where the rule specifies that the filtering tool is applied by using a single offset for all samples of each sub-block of the video block.
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公开(公告)号：US20220210481A1
公开(公告)日：2022-06-30
申请号：US17696654
申请日：2022-03-16
IPC分类号： H04N19/96 , H04N19/119 , H04N19/146 , H04N19/176 , H04N19/436
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：US20220286672A1
公开(公告)日：2022-09-08
申请号：US17825998
申请日：2022-05-26
申请人： Bytedance Inc.
发明人： Weijia ZHU , Jizheng XU , Li ZHANG , Hsiao Chiang CHUANG , Kui FAN
IPC分类号： H04N19/105 , H04N19/176 , H04N19/147
摘要： A method of video processing is described. The method includes performing a conversion between a current block of a video and a bitstream representation of the video, wherein the current block is coded with a dictionary-based coding mode using one or more dictionaries, and wherein the conversion is based on the one or more dictionaries.
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