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公开(公告)号：US11973959B2
公开(公告)日：2024-04-30
申请号：US17694253
申请日：2022-03-14
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/117 , H04N19/124 , H04N19/132 , H04N19/14 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/86
CPC classification number: H04N19/14 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/86
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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公开(公告)号：US20240114156A1
公开(公告)日：2024-04-04
申请号：US18524994
申请日：2023-11-30
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/196 , H04N11/04 , H04N19/105 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/186
CPC classification number: H04N19/196 , H04N11/044 , H04N19/105 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/186
Abstract: A method for implementing an adaptive color transform (ACT) during image/video encoding and decoding, includes determining, for a conversion between a video including a block and a bitstream of the video, that a size of the block is greater than a maximum allowed size for an ACT mode, and performing, based on the determining, the conversion, wherein, in response to the size of the block being greater than the maximum allowed size for the ACT mode, the block is partitioned into multiple sub-blocks, and wherein each of the multiple sub-blocks share a same prediction mode, and the ACT mode is enabled at a sub-block level.
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公开(公告)号：US20240107038A1
公开(公告)日：2024-03-28
申请号：US18519994
申请日：2023-11-27
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang
IPC: H04N19/186 , H04N19/117 , H04N19/12 , H04N19/124 , H04N19/132 , H04N19/157 , H04N19/167 , H04N19/176 , H04N19/30 , H04N19/60
CPC classification number: H04N19/186 , H04N19/117 , H04N19/12 , H04N19/124 , H04N19/132 , H04N19/157 , H04N19/167 , H04N19/176 , H04N19/30 , H04N19/60
Abstract: An example method of video processing includes determining, for a conversion between a chroma block of a video and a bitstream representation of the video, applicability of a deblocking filter process to at least some samples at an edge of the chroma block based on a mode of joint coding of chroma residuals for the chroma block. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20240107037A1
公开(公告)日：2024-03-28
申请号：US18513020
申请日：2023-11-17
Inventor： Jizheng Xu , Li Zhang , Ye-kui Wang , Kai Zhang , Weijia Zhu , Yue Wang , Yang Wang , Hongbin Liu
IPC: H04N19/186 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/96
CPC classification number: H04N19/186 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/96
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：US20240098253A1
公开(公告)日：2024-03-21
申请号：US18517737
申请日：2023-11-22
Inventor： Ye-kui Wang , Weijia Zhu , Li Zhang , Zhipin Deng
IPC: H04N19/105 , H04N19/169 , H04N19/176 , H04N19/46
CPC classification number: H04N19/105 , H04N19/176 , H04N19/188 , H04N19/46
Abstract: Methods and apparatus for video processing are disclosed. The processing may include video encoding, video decoding, or video transcoding. One example method includes performing a conversion between a current block of a video and a bitstream of the video. The bitstream conforms to a rule that specifies that a context index offset is used for including a first sign flag of a first coefficient in the bitstream. The rule specifies that a value of the context index offset is based on whether a first coding mode is applied on the current block in the bitstream.
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Patent Agency Ranking
公开(公告)号：US20240056609A1
公开(公告)日：2024-02-15
申请号：US18485088
申请日：2023-10-11
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Hsiao Chiang Chuang
IPC: H04N19/70 , H04N19/132 , H04N19/176 , H04N19/186
CPC classification number: H04N19/70 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: Methods, systems, and devices for performing entropy coding for a palette escape symbol in palette mode coding and decoding are described. An example method for video processing includes performing a conversion between a video having one or more video regions including a current video block and a bitstream representation of the video, wherein the bitstream representation conforms to a format rule that the current video block is coded using a palette mode coding tool, wherein a binarization of an escape symbol for the current video block uses an exponential-Golomb (EG) code of order K, wherein K is a non-negative integer that is unequal to three, and wherein the palette mode coding tool represents the current video block using a palette of representative color values and wherein the escape symbol is used for a sample of the current video block coded without using the representative color values.
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公开(公告)号：US20230396773A1
公开(公告)日：2023-12-07
申请号：US18453041
申请日：2023-08-21
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu
IPC: H04N19/132 , H04N19/117 , H04N19/186 , H04N19/70 , H04N19/80 , H04N19/136 , H04N19/17 , H04N19/82 , H04N9/77
CPC classification number: H04N19/132 , H04N19/117 , H04N19/186 , H04N19/70 , H04N19/80 , H04N19/136 , H04N19/17 , H04N19/82 , H04N9/77
Abstract: A method of video processing includes making a determination for a conversion between a video region of a video and a bitstream representation of the video to use a cross-component adaptive loop filtering (CC-ALF) tool for refining chroma samples values using luma sample values; and performing the conversion based on the determination, wherein the refining includes correcting the chroma sample values using a final refinement that is a further refinement of a first refinement value determined by selectively filtering the luma sample values.
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公开(公告)号：US11785260B2
公开(公告)日：2023-10-10
申请号：US17716447
申请日：2022-04-08
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang
IPC: H04N19/82 , H04N19/117 , H04N19/186 , H04N19/70
CPC classification number: H04N19/82 , H04N19/117 , H04N19/186 , H04N19/70
Abstract: An example method of video processing includes making a determination, for a conversion between a current video block of a video and a bitstream representation of the video, whether a cross-component adaptive loop filtering tool is enabled for the current video block based on a color property of the video. The method also includes performing the conversion according to the determination.
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公开(公告)号：US11778233B2
公开(公告)日：2023-10-03
申请号：US17556769
申请日：2021-12-20
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu , Yue Wang
IPC: H04N11/02 , H04N19/61 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/124 , H04N19/132 , H04N19/159 , H04N19/186 , H04N19/169 , H04N19/70 , H04N19/12 , H04N19/17 , H04N19/30 , H04N9/67
CPC classification number: H04N19/61 , H04N9/67 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/12 , H04N19/124 , H04N19/132 , H04N19/159 , H04N19/17 , H04N19/186 , H04N19/1883 , H04N19/30 , H04N19/70
Abstract: A method of video processing is provided. The method includes: determining, for a conversion between a current video unit of a video and a coded representation of the video, that applicability of a first coding tool and a second coding tool is mutually exclusive; and performing the conversion based on the determining, wherein the first coding tool corresponds to an adaptive color space transformation (ACT) tool; wherein use of the ACT tool comprises: converting, during encoding a representation of a visual signal from a first color domain to a second color domain, or converting during decoding, a representation of a visual signal from the second color domain to the first color domain.
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公开(公告)号：US20230300380A1
公开(公告)日：2023-09-21
申请号：US18322466
申请日：2023-05-23
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang
IPC: H04N19/82 , H04N19/117 , H04N19/186 , H04N19/70
CPC classification number: H04N19/82 , H04N19/117 , H04N19/186 , H04N19/70
Abstract: An example method of video processing includes making a determination, for a conversion between a current video block of a video and a bitstream representation of the video, whether a cross-component adaptive loop filtering tool is enabled for the current video block based on a color property of the video. The method also includes performing the conversion according to the determination.
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