公开(公告)号：US20240314312A1

公开(公告)日：2024-09-19

申请号：US18675843

申请日：2024-05-28

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

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: Chroma deblocking harmonization for video coding are described. In an exemplary aspect, a method for video processing includes deriving, for a conversion between a video processing unit of the video and a bitstream representation of the video processing unit, at least one decision result associated with decisions in a chroma deblocking filter decision process of the video processing unit; applying a same decision result from the at least one decision result for all chroma components of the video processing unit; and performing the conversion based on the same decision result.

公开(公告)号：US20240121381A1

公开(公告)日：2024-04-11

申请号：US18501497

申请日：2023-11-03

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu ,  Hsiao Chiang Chuang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: Video coding and decoding methods are described. An example method includes performing a conversion between a current video block of a video and a bitstream representation of the current video block by determining a first intra coding mode to be stored which is associated with the current video block using a differential coding mode, where the first intra coding mode associated with the current video block is determined according to a second prediction mode used by the differential coding mode, and where, in the differential coding mode, a difference between a quantized residual of an intra prediction of the current video block and a prediction of the quantized residual is represented in the bitstream representation for the current video block using a differential pulse coding modulation (DPCM) representation.

公开(公告)号：US20240073419A1

公开(公告)日：2024-02-29

申请号：US18498652

申请日：2023-10-31

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu ,  Kai Zhang ,  Ye-kui Wang

IPC: H04N19/12 ,  H04N19/117 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/12 ,  H04N19/117 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/70

Abstract: A method of video processing, including performing a conversion between a video unit of a video and a bitstream of the video according to a rule, wherein the rule specifies that whether a cross-component adaptive loop filter (CC-ALF) mode and an adaptive loop filter (ALF) mode are enabled for coding the video unit are indicated in the bitstream in a mutually independent manner.

公开(公告)号：US11917169B2

公开(公告)日：2024-02-27

申请号：US17882359

申请日：2022-08-05

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance INC.

Inventor： Jizheng Xu ,  Li Zhang ,  Ye-kui Wang ,  Kai Zhang ,  Weijia Zhu ,  Yue Wang ,  Yang Wang ,  Hongbin Liu

IPC: H04N19/186 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/186 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

Abstract: Video processing methods, systems and apparatus are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video using a palette mode in which samples of the video block are represented using a palette of representative color values. A size of the palette of the video block is determined based on whether a local dual tree is applied for the conversion.

公开(公告)号：US11863715B2

公开(公告)日：2024-01-02

申请号：US17842025

申请日：2022-06-16

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Weijia Zhu ,  Jizheng Xu ,  Li Zhang ,  Yue Wang

IPC: H04N19/60 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/60 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186

Abstract: Methods, systems and devices for implementing adaptive color transform (ACT) and block based delta pulse code modulation (BDPCM) during image/video encoding or decoding are described. An example method of video processing includes determining, for a conversion between a current video unit of a video that is a chroma video unit and a bitstream representation of the video, whether a block-based delta pulse code modulation (BDPCM) mode is available based on a rule, and performing the conversion based on the determining, wherein the rule is based on whether an adaptive color transform (ACT) mode is used for coding the current video unit and/or whether the BDPCM mode is used for coding a luma video unit corresponding to the current video unit.

公开(公告)号：US11722674B2

公开(公告)日：2023-08-08

申请号：US17732743

申请日：2022-04-29

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Li Zhang ,  Weijia Zhu ,  Kai Zhang ,  Hongbin Liu

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/186 ,  H04N19/70 ,  H04N19/80 ,  H04N19/136 ,  H04N19/17 ,  H04N19/82 ,  H04N9/77

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 determining, for a conversion between a video region of a video and a bitstream representation of the video, to correct chroma samples of the video region using a cross-component adaptive loop filter (CC-ALF) process based on filtering of luma sample differences; and performing the conversion based on the determining.

公开(公告)号：US11677935B2

公开(公告)日：2023-06-13

申请号：US17580314

申请日：2022-01-20

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/159

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: Devices, systems and methods for video processing are described. An exemplary method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, that a neighboring block of the current block that is coded in a palette mode is processed as an intra-coded block having a default mode during a construction of a list of most probable modes (MPM) candidates of the current block in case the neighboring block is located above or left of the current block. The method also includes performing the conversion based on the determining.

公开(公告)号：US20230127932A1

公开(公告)日：2023-04-27

申请号：US17994095

申请日：2022-11-25

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

IPC: 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 that a first block coded using a first prediction mode is treated as a non-intra block to be excluded from counting of the number of intra-coded neighboring blocks. In the first prediction mode, reconstructed samples are represented by a set of representative color values, and the set of representative color values comprises at least one of 1) palette predictors, 2) escaped samples, or 3) palette information included in the bitstream. The method also includes performing the conversion based on the determining.

公开(公告)号：US11622115B2

公开(公告)日：2023-04-04

申请号：US17732777

申请日：2022-04-29

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Li Zhang ,  Weijia Zhu ,  Kai Zhang ,  Hongbin Liu

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/80 ,  H04N19/186 ,  H04N19/70 ,  H04N19/136 ,  H04N19/17 ,  H04N19/82 ,  H04N9/77

Abstract: A method of video processing includes performing a conversion between a portion of a chroma component of a video and a bitstream representation of the video according to a rule, wherein the rule specifies that whether a cross-component adaptive loop filtering (CC-ALF) tool is available for the conversion of the portion of the video is dependent on whether an availability or a use of an adaptive loop filtering (ALF) tool is indicated for a corresponding portion of a luma component.

公开(公告)号：US20230041262A1

公开(公告)日：2023-02-09

申请号：US17955719

申请日：2022-09-29

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

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.