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公开(公告)号：US20230362375A1
公开(公告)日：2023-11-09
申请号：US18323149
申请日：2023-05-24
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Ye-kui Wang , Yue Wang
IPC: H04N19/12 , H04N19/60 , H04N19/196 , H04N19/176 , H04N19/85 , H04N19/186
CPC classification number: H04N19/12 , H04N19/176 , H04N19/186 , H04N19/197 , H04N19/60 , H04N19/85
Abstract: A method for implementing an adaptive colour transform (ACT) mode during image/video encoding and decoding includes performing a conversion between a current video block of a video and a bitstream of the video, wherein the current video block is coded using the ACT mode, wherein the conversion includes applying an inverse ACT transform on the current video block according to a rule, and wherein the rule specifies that a clipping operation, based on a bit depth of the current video block, is applied to an input of the inverse ACT transform.
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公开(公告)号：US20230111806A1
公开(公告)日：2023-04-13
申请号：US18071335
申请日：2022-11-29
Inventor： Zhipin Deng , Ye-kui Wang , Li Zhang , Kai Zhang
IPC: H04N19/70 , H04N19/186 , H04N19/169 , H04N19/176
Abstract: Methods, systems and apparatus for video processing are described. One example video processing method includes performing a conversion between a video comprising a video block and a bitstream of the video according to a rule, wherein the video block is a coding tree node that includes one or more coding units, and wherein the rule specifies that a coded information of the video block is indicative of whether a coding mode is enabled for the one or more coding units of the video block.
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公开(公告)号：US20230099528A1
公开(公告)日：2023-03-30
申请号：US17891800
申请日：2022-08-19
Inventor： Kai Zhang , Li Zhang , Ye-kui Wang , Zhipin Deng , Kui Fan , Jizheng Xu , Hongbin Liu
IPC: H04N19/129 , H04N19/172 , H04N19/169 , H04N19/157 , H04N19/70 , H04N19/174 , H04N19/119 , H04N19/103
Abstract: 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：US20230088230A1
公开(公告)日：2023-03-23
申请号：US17897967
申请日：2022-08-29
Inventor： Ye-kui Wang , Zhipin Deng , Li Zhang , Kai Zhang , Jizheng Xu
IPC: H04N19/46 , H04N19/70 , H04N19/105 , H04N19/172
Abstract: A video processing method includes performing a conversion between a video and a bitstream of the video. The bitstream conforms to a format rule specifying a condition that controls whether or how one or more syntax elements related to picture order counts for a long term reference picture are included in a reference picture list syntax structure in the bitstream.
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公开(公告)号：US20230084926A1
公开(公告)日：2023-03-16
申请号：US17962852
申请日：2022-10-10
Inventor： Zhipin Deng , Li Zhang , Ye-kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/186 , H04N19/169 , H04N19/117
Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example method of video processing includes performing a conversion between a video and a bitstream of the video according to a format rule. The format rule specifies that constraints on values of one or more first syntax elements in an adaptation parameter set are defined based on semantics of second syntax elements in a picture header and/or a slice header if a picture or a slice referring to the adaptation parameter set.
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Patent Agency Ranking
公开(公告)号：US20230078115A1
公开(公告)日：2023-03-16
申请号：US17990247
申请日：2022-11-18
Inventor： Ye-kui Wang , Zhipin Deng
IPC: H04N19/196 , H04N19/70 , H04N19/172 , H04N19/167 , H04N19/117 , H04N19/82
Abstract: Methods, apparatus, systems for performing video processing such as video encoding, video decoding, or video transcoding are described. One example method of video processing includes performing a conversion between a video comprising one or more video layers and a bitstream of the video according to a rule. The rule specifies that responsive to a value of a first field in a sequence parameter set (SPS) that is referred to by a video layer, a second field in a video parameter set referred to by the SPS that is indicative of a maximum number of sublayers allowed in the bitstream is construed to be equal to a third field in the SPS. The third field is indicative of a maximum number of sublayers allowed in the video layer.
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公开(公告)号：US20220394306A1
公开(公告)日：2022-12-08
申请号：US17888238
申请日：2022-08-15
Inventor： Kai Zhang , Li Zhang , Yang Wang , Ye-kui Wang , Zhipin Deng , Jizheng Xu , Hongbin Liu
IPC: H04N19/70 , H04N19/46 , H04N19/186 , H04N19/174
Abstract: A method includes performing a conversion between a video unit of a video and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a syntax element indicating whether an in-loop filtering operation is performed across slice boundaries is selectively included in the bitstream based on whether or how the video unit is partitioned into slices.
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公开(公告)号：US20220394282A1
公开(公告)日：2022-12-08
申请号：US17882359
申请日：2022-08-05
Inventor： Jizheng Xu , Li Zhang , Ye-kui Wang , Kai Zhang , Weijia Zhu , Yue Wang , Yang Wang , Hongbin Liu
IPC: H04N19/186 , H04N19/96 , H04N19/132 , H04N19/176 , H04N19/159
Abstract: Video processing methods, systems and appratrus are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video using a palette mode in which samples of the video block are represented using a palette of representive color values. A size of the palette of the video block is determined based on whether a local dual tree is applied for the conversion.
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公开(公告)号：US20220394243A1
公开(公告)日：2022-12-08
申请号：US17886084
申请日：2022-08-11
Inventor： Zhipin Deng , Li Zhang , Kai Zhang , Ye-kui Wang , Kui Fan
IPC: H04N19/105 , H04N19/174 , H04N19/70
Abstract: 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：US12206902B2
公开(公告)日：2025-01-21
申请号：US18320722
申请日：2023-05-19
Applicant: Bytedance Inc.
Inventor： Li Zhang , Ye-kui Wang
IPC: H04N19/70 , H04N19/184 , H04N19/186
Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video picture of a video comprising one or more slices and a bitstream of the video picture according to a rule. The rule specifies that that whether a first syntax element indicating a usage of a coding tool is present at a first level is based on a syntax flag indicating whether a syntax structure of a second level is not present at the first level, wherein the second level is higher than the first level, and wherein the second level is the video picture level or higher than the video picture level.
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