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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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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：US11985329B2
公开(公告)日：2024-05-14
申请号：US17694008
申请日：2022-03-14
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/196 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/14 , H04N19/174 , H04N19/176 , H04N19/186 , 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 performing a conversion between a block of a chroma component of a video and a bitstream representation of the video. During the conversion, a deblocking filter process is applied to at least some samples along an edge of the block, and wherein chroma quantization parameter (QP) offsets are added to outputs from a chroma QP table to determine parameters for the deblocking filter process.
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公开(公告)号：US11985323B2
公开(公告)日：2024-05-14
申请号：US17881197
申请日：2022-08-04
Applicant: Bytedance, Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Hsiao Chiang Chuang
IPC: H04N19/132 , H04N19/11 , H04N19/124 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/105 , H04N19/59
CPC classification number: H04N19/132 , H04N19/11 , H04N19/124 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/105 , H04N19/59
Abstract: Video coding and decoding methods are described. An example method includes determining, based on an applicability rule, that a differential coding mode is applicable to a conversion between a chroma video block of a video and a bitstream representation of the chroma video block, and performing, based on the determining, the conversion between the chroma video block and the bitstream representation of the chroma video block using the differential coding mode, where the chroma video block is represented in the bitstream representation using a difference between a quantized residual of an intra prediction of the chroma video block and a prediction of the quantized residual in the differential coding mode, where the intra prediction is performed in a first direction and the prediction of the quantized residual is performed in a second direction, and where the difference is represented using a differential pulse coding modulation (DPCM) representation.
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Patent Agency Ranking
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：US20240073426A1
公开(公告)日：2024-02-29
申请号：US18498665
申请日：2023-10-31
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/14 , H04N19/117 , H04N19/124 , H04N19/132 , 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 including samples on one side of the edge and/or a second quantization information for a second video region including 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：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：US20240022741A1
公开(公告)日：2024-01-18
申请号：US18469230
申请日：2023-09-18
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/186 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/593 , H04N19/96
CPC classification number: H04N19/186 , H04N19/119 , H04N19/96 , H04N19/176 , H04N19/593 , H04N19/159
Abstract: A video processing method is described. The method includes determining, for a conversion between a video unit of a video and a coded representation of the video, a maximum number of entries of a palette of representative values used during the conversion according to a rule; and performing the conversion using the palette, and wherein the rule specifies the maximum number of entries according to a characteristic of the video unit.
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