公开(公告)号：US20240015328A1

公开(公告)日：2024-01-11

申请号：US18472093

申请日：2023-09-21

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

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.

公开(公告)号：US20240015298A1

公开(公告)日：2024-01-11

申请号：US18474512

申请日：2023-09-26

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

Inventor： Kai Zhang ,  Li Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/80

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/80

Abstract: Devices, systems, and methods for digital video coding that include cross-component prediction are described. In a representative aspect, a method for video coding includes receiving a bitstream representation of a current block of video data comprising a luma component and a chroma component, determining parameters of a linear model based on a first set of samples that are generated by down-sampling a second set of samples of the luma component, and processing, based on the parameters of the linear model, the bitstream representation to generate the current block.

公开(公告)号：US11871039B2

公开(公告)日：2024-01-09

申请号：US17896532

申请日：2022-08-26

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

Inventor： Jizheng Xu ,  Li Zhang ,  Ye-kui Wang ,  Kai Zhang ,  Zhipin Deng

IPC: H04N11/02 ,  H04N19/70 ,  H04N19/132 ,  H04N19/174 ,  H04N19/18

CPC classification number: H04N19/70 ,  H04N19/132 ,  H04N19/174 ,  H04N19/18

Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video including a video unit and a bitstream of the video according to a rule, wherein the rule specifies whether a transform skip residual coding operation is enabled for the video unit, and wherein one or more syntax elements are included in the bitstream at a video segment level indicative of whether the transform skip residual coding operation is enabled for the video unit.

公开(公告)号：US11870987B2

公开(公告)日：2024-01-09

申请号：US17317375

申请日：2021-05-11

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

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

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52

Abstract: Devices, systems and methods for digital video coding, which includes using default motion candidates for video coding, are described. An exemplary method for video processing includes determining, for a conversion between a block of a video and a bitstream representation of the video, weights to use for a weighted average of prediction samples along an edge of two partitions of the block. The two partitions are generated according to a geometry partition mode, and the weights are selected from a first weighting factor group that at least one of the weights is equal to 0 or 1. The method also includes performing the conversion based on the determining.

公开(公告)号：US20240007628A1

公开(公告)日：2024-01-04

申请号：US18468882

申请日：2023-09-18

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

Inventor： Kai Zhang ,  Li Zhang ,  Xi Xie ,  Junru Li ,  Meng Wang

IPC: H04N19/119 ,  H04N19/70 ,  H04N19/96 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159

CPC classification number: H04N19/119 ,  H04N19/70 ,  H04N19/96 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159

Abstract: A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines usage of one or more of a separate tree coding and a partitioning beyond a minimum size threshold for a video unit. The mechanism also disables a cross-component coding tool for the video unit based on the determination. A conversion between a visual media data and a bitstream is performed in accordance with the coding tool being disabled.

公开(公告)号：US11863784B2

公开(公告)日：2024-01-02

申请号：US17406859

申请日：2021-08-19

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

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

IPC: H04N19/513 ,  H04N19/433

CPC classification number: H04N19/513 ,  H04N19/433

Abstract: Sub-table for history-based affine mode is described. In an exemplary aspect, a method for video processing includes deriving, deriving, for a conversion between a current block of video and a bitstream representation of the current block, an affine model for the current block based on affine related information, wherein the affine related information is stored in at least one first affine history motion vector prediction (HMVP) buffer of M first affine HMVP buffers or at least one affine sub-buffer of M affine sub-buffers (HB0, HB1, . . . HBM-1) into which a second affine HMVP buffer is divided, wherein the first affine HMVP buffer or affine HMVP sub-buffer being used to store affine related information of blocks coded prior the current block, M being an integer larger than 1; and performing the conversion by using the derived affine model.

公开(公告)号：US11856185B2

公开(公告)日：2023-12-26

申请号：US17330665

申请日：2021-05-26

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

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

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/176 ,  H04N19/503 ,  H04N19/109 ,  H04N19/513 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159

CPC classification number: H04N19/105 ,  H04N19/109 ,  H04N19/137 ,  H04N19/176 ,  H04N19/503 ,  H04N19/513 ,  H04N19/139 ,  H04N19/159

Abstract: Techniques for video encoding and decoding are described. A method of video processing is disclosed. The method includes, determining, based on a video characteristic of a first video block, an enabling or disabling of a pruning process for a table updating process; updating one or multiple tables, based on the determination and motion information of the first video block, the one or multiple motion tables being History-based Motion Vector Prediction HMVP (HMVP) tables; and performing a conversion between a subsequent video block of the video and bitstream representation of the subsequent video block based on the updated tables.

公开(公告)号：US20230396812A1

公开(公告)日：2023-12-07

申请号：US18451933

申请日：2023-08-18

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

Inventor： Kai Zhang ,  Li Zhang ,  Zhipin Deng ,  Na Zhang ,  Yang Wang

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/96 ,  H04N19/70 ,  H04N19/176 ,  H04N19/119

Abstract: A mechanism for processing video data is disclosed. An Unsymmetric Binary Tree (UBT) partition of a parent block is determined to create two sub-blocks with different dimensions. At least one of the sub-blocks comprises a side that is non-dyadic. A conversion is performed between a visual media data and a bitstream based on the sub-blocks.

公开(公告)号：US20230396779A1

公开(公告)日：2023-12-07

申请号：US18453453

申请日：2023-08-22

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

Inventor： Kai Zhang ,  Li Zhang ,  Zhipin Deng ,  Na Zhang ,  Yang Wang

IPC: H04N19/176 ,  H04N19/119 ,  H04N19/60

CPC classification number: H04N19/176 ,  H04N19/119 ,  H04N19/60

Abstract: A method for processing video data is disclosed. The method includes determining a width (w) and a height (h) of a coding group based on a width (W) and a height (H) of a block that is non-dyadic and contains residual, processing the residual of the block in unit of the coding group, and performing a conversion between a visual media data and a bitstream according to a rule based on the processing.

公开(公告)号：US20230396764A1

公开(公告)日：2023-12-07

申请号：US18451942

申请日：2023-08-18

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

Inventor： Kai Zhang ,  Li Zhang ,  Zhipin Deng ,  Na Zhang ,  Yang Wang

IPC: H04N19/12 ,  H04N7/01 ,  H04N19/176 ,  H04N19/18 ,  H04N19/625 ,  H04N19/157

CPC classification number: H04N19/12 ,  H04N7/01 ,  H04N19/176 ,  H04N19/18 ,  H04N19/625 ,  H04N19/157

Abstract: A mechanism for processing video data is disclosed. A Unsymmetric Binary Tree (UBT) partition of a parent block is determined to create two sub-blocks with different dimensions. At least one of the sub-blocks includes a side that is non-dyadic. A conversion is performed between a visual media data and a bitstream based on the sub-blocks.