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公开(公告)号：US11800155B2
公开(公告)日：2023-10-24
申请号：US17882375
申请日：2022-08-05
Inventor： Jizheng Xu , Li Zhang , Ye-kui Wang , Kai Zhang , Weijia Zhu , Yue Wang
IPC: H04N19/86 , H04N19/117 , H04N19/172 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/167
CPC classification number: H04N19/86 , H04N19/117 , H04N19/172 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/167
Abstract: A method includes performing a conversion between a block of a video and a bitstream of the video according to a rule. The rule specifies that whether a syntax element identifying a deblocking offset for a chroma component of the video is included in a video region level is determined based on a colour format of the video.
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公开(公告)号：US11736697B2
公开(公告)日：2023-08-22
申请号：US17732692
申请日：2022-04-29
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu
IPC: H04N19/82 , H04N19/17 , H04N19/117 , H04N19/132 , H04N19/136 , H04N9/77 , H04N19/186 , H04N19/70 , H04N19/80
CPC classification number: H04N19/132 , H04N9/77 , H04N19/117 , H04N19/136 , H04N19/17 , H04N19/186 , H04N19/70 , H04N19/80 , H04N19/82
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：US11665341B2
公开(公告)日：2023-05-30
申请号：US17585704
申请日：2022-01-27
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/132
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a number of intra-coded neighboring blocks of the current block for a combined inter and intra prediction mode according to a rule that specifies a manner of treating a block coded using a palette coding mode in counting the number of intra-coded neighboring blocks for the combined inter and intra prediction mode. The method also includes performing the conversion based on the determining.
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公开(公告)号：US11652987B2
公开(公告)日：2023-05-16
申请号：US17580446
申请日：2022-01-20
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/186
CPC classification number: H04N19/159 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/186
Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes performing a conversion between a video comprising luma blocks and corresponding chroma blocks and a bitstream representation of the video according to a rule that specifies that, for a case that a current luma block is coded using a palette coding mode and a corresponding current chroma block coded with a derived mode, the current luma block is treated as having a default intra prediction mode and the current chroma block is coded with the default intra prediction mode.
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公开(公告)号：US11611753B2
公开(公告)日：2023-03-21
申请号：US17578703
申请日：2022-01-19
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/186 , H04N19/124 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/70
Abstract: Devices, systems and methods for video processing are described. An exemplary method for video processing includes determining, for a block of a video, a quantization parameter associated with the block, coding the block of the video into a bitstream representation of the video as a palette coded block in part based on a modified value of the quantization parameter, and signaling coded information related to the quantization parameter in the bitstream representation.
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Patent Agency Ranking
公开(公告)号：US11539981B2
公开(公告)日：2022-12-27
申请号：US17556689
申请日：2021-12-20
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu , Yue Wang
IPC: H04N19/186 , H04N19/593 , H04N19/96 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/70 , H04N19/159 , H04N19/132 , H04N19/124 , H04N19/61 , H04N19/169 , H04N19/12 , H04N19/17 , H04N19/30 , H04N9/67
Abstract: A method of video processing is provided. The method includes determining, due to a dual tree partitioning structure being used for a conversion between a video unit and a coded representation of the video unit, that use of an adaptive color space transformation (ACT) tool is disabled for the video unit; and performing, based on the determining, the conversion by disabling the ACT tool for the video unit, wherein the 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：US12284371B2
公开(公告)日：2025-04-22
申请号：US17857924
申请日：2022-07-05
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
Abstract: Methods, systems and devices for implementing an adaptive color transform (ACT) during image/video encoding and decoding, including: determining, for a conversion between a video comprising 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：US12284347B2
公开(公告)日：2025-04-22
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: H04N19/00 , H04N19/12 , H04N19/176 , H04N19/186 , H04N19/196 , 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：US12244811B2
公开(公告)日：2025-03-04
申请号：US17470095
申请日：2021-09-09
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70
Abstract: A method of visual media processing video, includes determining that palette mode is to be used for processing a first portion of a video block and intra block copy (IBC) mode is to be used for processing a second portion of the video block, and performing further processing of the first portion of the video block using the palette mode and the second portion of the video using the IBC mode, wherein indications of the first portion of the video block processed using the palette mode and indications of the second portion of the video block processed using the IBC mode are included in a palette index identifying the first portion of the video block and the second portion of the video block.
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公开(公告)号：US12238276B2
公开(公告)日：2025-02-25
申请号：US17955719
申请日：2022-09-29
Inventor： Ye-kui Wang , Weijia Zhu , Li Zhang , Zhipin Deng
IPC: H04N19/105 , H04N19/169 , H04N19/176 , 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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