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公开(公告)号：US20230032798A1
公开(公告)日：2023-02-02
申请号：US17954905
申请日：2022-09-28
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/117 , H04N19/132 , H04N19/82 , H04N19/176 , H04N19/159
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：US11563946B2
公开(公告)日：2023-01-24
申请号：US17698968
申请日：2022-03-18
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang
IPC: H04N19/70 , H04N19/124 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: Methods, systems, and devices for quantization parameter derivation in palette mode coding and decoding 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, that the current block is coded using a palette mode and an escape symbol value is signaled in the bitstream representation, and performing, based on the determining, the conversion, wherein a clipped quantization parameter for the current block is used in the conversion, and wherein the clipped quantization parameter used for a chroma component of the video is derived based on a quantization parameter subsequent to a mapping operation of a quantization process or a dequantization process.
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公开(公告)号：US11558638B2
公开(公告)日：2023-01-17
申请号：US17360812
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：US20220400293A1
公开(公告)日：2022-12-15
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 , H04N19/186 , H04N19/196 , H04N19/70 , H04N19/172
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：US12244819B2
公开(公告)日：2025-03-04
申请号：US17694305
申请日：2022-03-14
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/14 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/86
Abstract: An example method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether to enable usage of a chroma quantization parameter (QP) offset for the current block according to a syntax element at a level of a video unit. The video unit includes the current block and a second block of the video. The method also includes performing the conversion based on the determining.
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Patent Agency Ranking
公开(公告)号：US20250016329A1
公开(公告)日：2025-01-09
申请号：US18895652
申请日：2024-09-25
Inventor： Jizheng Xu , Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu
IPC: 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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公开(公告)号：US12041223B2
公开(公告)日：2024-07-16
申请号：US17888956
申请日：2022-08-16
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
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 , H04N19/70
Abstract: A method includes deriving, for a current video block of a video that is a chroma block and coded in a chroma derived mode (DM), an intra prediction mode for the current video block according to a rule related to a coding mode of the current video block; and performing a conversion between the current video block and a coded presentation of the video, wherein the rule specifies to derive the intra prediction mode based on an intra prediction direction of a corresponding luma block used to derive the chroma DM mode and coded using a block differential pulse code modulation representation of a quantized residual block corresponding to the current video block.
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公开(公告)号：US12003715B2
公开(公告)日：2024-06-04
申请号：US17954905
申请日：2022-09-28
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：US11991382B2
公开(公告)日：2024-05-21
申请号：US17463838
申请日：2021-09-01
Inventor： Weijia Zhu , Hongbin Liu , Kai Zhang , Li Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/176 , H04N19/46 , H04N19/513
CPC classification number: H04N19/513 , H04N19/105 , H04N19/176 , H04N19/46
Abstract: Motion Vector Management for Decoder Side Motion Vector Refinement is disclosed. A method of video processing including: determining, for a conversion between a first block of video and a bitstream representation of the first block of video, whether and/or how to apply decoder-side motion vector refinement (DMVR) based on a signaled information; and performing the conversion based on the determination.
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公开(公告)号：US11979557B2
公开(公告)日：2024-05-07
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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