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公开(公告)号：US11677953B2
公开(公告)日：2023-06-13
申请号：US17330792
申请日：2021-05-26
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：US12278949B2
公开(公告)日：2025-04-15
申请号：US18321426
申请日：2023-05-22
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu , Yue Wang
IPC: H04N19/105 , H04N19/176 , H04N19/186 , H04N19/189
Abstract: A method of video processing includes determining, for a conversion between a video component of a video comprising a current video block and a bitstream representation of the video, that a first coding tool is used based on a rule for the current video block; and performing the conversion according to the determining, wherein the first coding tool includes transforming a representation of a visual signal between two color spaces, and where the rule specifies that a first quantization parameter (QP) offset for a luma channel of the current video block is equal to K1 and a second QP offset for a first chroma channel of the current video block is K1+O, where K1 and O are integers.
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公开(公告)号：US20250047855A1
公开(公告)日：2025-02-06
申请号：US18896281
申请日：2024-09-25
Inventor： Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Weijia Zhu
IPC: H04N19/13 , H04N19/176 , H04N19/70
Abstract: Method of processing video data is disclosed. A method for video processing includes dividing, for a conversion between a block of a video and a bitstream of the block, syntax elements associated with the block into different groups of syntax elements; applying controls on the different groups of syntax elements separately; and performing the conversion based on the controls.
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公开(公告)号：US12132884B2
公开(公告)日：2024-10-29
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 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
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：US12003711B2
公开(公告)日：2024-06-04
申请号：US17523131
申请日：2021-11-10
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
CPC classification number: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
Abstract: In an exemplary aspect, a method for visual media processing includes identifying a boundary at a vertical edge and/or a horizontal edge of two video blocks; calculating a boundary strength of a filter based on at least one of the two video blocks crossing a vertical edge or a horizontal edge is coded using a combined intra-inter prediction (CIIP) mode; deciding whether to turn on or off the filter; selecting a strength of the filter in case the filter is turned on; and performing, based on the selecting, a deblocking filter (DB) process to the video blocks.
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Patent Agency Ranking
公开(公告)号：US11997264B2
公开(公告)日：2024-05-28
申请号：US17519269
申请日：2021-11-04
Inventor： Jiexi Wang , Jizheng Xu , Jaehong Chon , Weijia Zhu , Li Zhang , Yue Wang
IPC: H04N19/117 , H04N19/176 , H04N19/186 , H04N19/86
CPC classification number: H04N19/117 , H04N19/176 , H04N19/186 , H04N19/86
Abstract: A method for processing video data is described and the method includes: deriving, for a conversion between a video processing unit of the video and a bitstream of the video processing unit, at least one deblocking filter associated with a chroma deblocking filter process of the video processing unit; applying a same deblocking filter from the at least one deblocking filter for all chroma components of the video processing unit; and performing the conversion based on the same deblocking filter.
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公开(公告)号：US11968361B2
公开(公告)日：2024-04-23
申请号：US17523131
申请日：2021-11-10
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
CPC classification number: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
Abstract: In an exemplary aspect, a method for visual media processing includes identifying a boundary at a vertical edge and/or a horizontal edge of two video blocks; calculating a boundary strength of a filter based on at least one of the two video blocks crossing a vertical edge or a horizontal edge is coded using a combined intra-inter prediction (CIIP) mode; deciding whether to turn on or off the filter; selecting a strength of the filter in case the filter is turned on; and performing, based on the selecting, a deblocking filter (DB) process to the video blocks.
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公开(公告)号：US11917197B2
公开(公告)日：2024-02-27
申请号：US17680979
申请日：2022-02-25
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/593 , H04N19/11 , H04N19/124 , H04N19/157 , H04N19/176
CPC classification number: H04N19/593 , H04N19/11 , H04N19/124 , H04N19/157 , H04N19/176
Abstract: Extensions of intra coding modes in video coding are described. One example is a method for video processing, comprising: generating, for a conversion between a current video block of a video and a bitstream representation of a video, a set of extended intra prediction modes (IPMs) associated with the current video block by revising a set of existing IPMs to include at least one new coding method, wherein the new coding method is different from coding methods in the existing IPMs and is to be treated as IPM; and performing the conversion based on the set of extended IPMs.
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公开(公告)号：US20240064315A1
公开(公告)日：2024-02-22
申请号：US18471485
申请日：2023-09-21
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/46 , H04N19/172 , H04N19/186
CPC classification number: H04N19/46 , H04N19/172 , 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 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. 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. 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：US11805274B2
公开(公告)日：2023-10-31
申请号：US17360868
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
CPC classification number: H04N19/56 , H04N19/105 , H04N19/137 , H04N19/139 , H04N19/147 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/537 , 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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