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公开(公告)号：US20250039407A1
公开(公告)日：2025-01-30
申请号：US18915992
申请日：2024-10-15
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/159 , H04N19/107 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46
Abstract: Devices, systems, and methods for palette mode coding are described. An exemplary method for video processing includes determining, for a conversion between a block of a video region in a video and a bitstream representation of the video, a prediction mode based on one or more allowed prediction modes that include at least a palette mode of the block. An indication of usage of the palette mode is determined according to the prediction mode. The method also includes performing the conversion based on the one or more allowed prediction modes.
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公开(公告)号：US11924432B2
公开(公告)日：2024-03-05
申请号：US17572810
申请日：2022-01-11
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/00 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
CPC classification number: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: Devices, systems and methods for palette mode coding are described. An exemplary method for video processing includes performing a conversion between a block of a video and a bitstream representation of the video. The bitstream representation is processed according to a format rule that specifies a first indication of usage of a palette mode and a second indication of usage of an intra block copy (IBC) mode are signaled dependent of each other.
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公开(公告)号：US20240048710A1
公开(公告)日：2024-02-08
申请号：US18149333
申请日：2023-01-03
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/96
CPC classification number: H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/96
Abstract: Devices, systems, and methods for palette mode coding are described. An exemplary method for video processing includes performing a conversion between a block of a video region of a video and a bitstream representation of the video. The bitstream representation is processed according to a first format rule that specifies whether a first indication of usage of a palette mode is signaled for the block and a second format rule that specifies a position of the first indication relative to a second indication of usage of a prediction mode for the block.
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公开(公告)号：US20240015328A1
公开(公告)日：2024-01-11
申请号：US18472093
申请日：2023-09-21
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu , Yue Wang
IPC: H04N19/61 , H04N9/67 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/12 , H04N19/70 , H04N19/132 , H04N19/159 , H04N19/17 , H04N19/186 , H04N19/169 , H04N19/30 , H04N19/124
CPC classification number: H04N19/61 , H04N9/67 , H04N19/105 , H04N19/11 , H04N19/119 , H04N19/12 , H04N19/70 , H04N19/132 , H04N19/159 , H04N19/17 , H04N19/186 , H04N19/1883 , H04N19/30 , H04N19/124
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：US11838523B2
公开(公告)日：2023-12-05
申请号：US17857874
申请日：2022-07-05
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/105 , H04N19/196 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/186 , H04N11/04
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, comprises 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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Patent Agency Ranking
公开(公告)号：US11792413B2
公开(公告)日：2023-10-17
申请号：US17857924
申请日：2022-07-05
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/196 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/105 , H04N19/186 , H04N11/04
CPC classification number: H04N19/196 , H04N11/044 , 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：US11616978B2
公开(公告)日：2023-03-28
申请号：US17360902
申请日：2021-06-28
Inventor： Jizheng Xu , Jiahao Li , Weijia Zhu , Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/56 , H04N19/139 , H04N19/176 , H04N19/52 , H04N19/105 , H04N19/147 , H04N19/513 , H04N19/537 , H04N19/137 , H04N19/543 , H04N19/132 , H04N19/567
Abstract: Methods, systems and device for hash-based motion estimation in video coding are described. An exemplary method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, motion information associated with the current block using a hash-based motion search, a size of the current block being M×N, M and N being positive integers and M being not equal to N, applying, based on the motion information and a video picture comprising the current block, a prediction for the current block, and performing, based on the prediction, the conversion.
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公开(公告)号：US20220377333A1
公开(公告)日：2022-11-24
申请号：US17867284
申请日：2022-07-18
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Ye-kui Wang , Yue Wang
IPC: H04N19/12 , H04N19/60 , H04N19/176 , H04N19/85 , H04N19/196 , H04N19/186
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 comprises 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：US12126802B2
公开(公告)日：2024-10-22
申请号：US17473440
申请日：2021-09-13
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Weijia Zhu , Yue Wang
IPC: H04N19/122 , H04N19/105 , H04N19/119 , H04N19/13 , H04N19/14 , H04N19/157 , H04N19/176 , H04N19/60 , H04N19/70
CPC classification number: H04N19/122 , H04N19/105 , H04N19/119 , H04N19/13 , H04N19/14 , H04N19/157 , H04N19/176 , H04N19/60 , H04N19/70
Abstract: A method for video processing includes applying a sub-block residual coding scheme to a current video block, wherein the residual of the current video block is split into a plurality of sub-blocks each having a size of M*N, determining at least one sub-block with non-zero coefficients based on characteristic associated with each of the plurality of sub-blocks; coding the residue of the current video block based on the derived at least one sub-block with non-zero coefficients.
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公开(公告)号：US12113986B2
公开(公告)日：2024-10-08
申请号：US17551392
申请日：2021-12-15
Inventor： Jizheng Xu , Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu
IPC: H04N19/139 , H04N19/159 , H04N19/176 , H04N19/593 , H04N19/96
CPC classification number: H04N19/139 , H04N19/159 , H04N19/176 , H04N19/593 , H04N19/96
Abstract: Interaction between screen content coding tools and motion information is disclosed. A method of video processing includes modifying, for a conversion between a block of a video and a bitstream representation of the block, at least one of motion information associated with the block which is coded with intra block copy (IBC) mode; and performing the conversion based on the modified motion information.
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