公开(公告)号：US12231680B2

公开(公告)日：2025-02-18

申请号：US17692782

申请日：2022-03-11

Applicant: Bytedance Inc.

Inventor： Li Zhang ,  Weijia Zhu ,  Jizheng Xu

IPC: H04N19/593 ,  G06T9/00 ,  G06T11/00 ,  G06T11/40 ,  G06V10/20 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/169 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: In one example aspect, a method of video processing includes performing a conversion between a current block of a video and a bitstream of the video using a palette mode in which a palette of representative sample values is used for coding the current block. During the conversion, one or multiple predictor palettes are used for predicting the palette of representative sample values, and wherein updating of the one or multiple predictor palettes after the conversion of the current block is disabled according to a rule based on a characteristic of the current block.

公开(公告)号：US12231625B2

公开(公告)日：2025-02-18

申请号：US18161511

申请日：2023-01-30

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

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

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176

Abstract: A method of video processing is described. The method includes performing a conversion between a current video block of a video picture of a video and a coded representation of the video according to a buffer allocation rule, wherein the conversion uses an intra block copy (IBC) mode in which a prediction of the current video block is derived based on sample values from a same video slice with the current video block, and wherein the sample values are determined by block vectors, wherein the buffer allocation rule specifies that a virtual buffer allocated for the conversion using the IBC mode is greater than a minimum size of memory for storing a portion of the video picture searched for determining the block vectors.

公开(公告)号：US12212769B2

公开(公告)日：2025-01-28

申请号：US17380354

申请日：2021-07-20

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

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

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176

Abstract: A method for processing a video includes determining, for a first video unit, a set of local illumination compensation (LIC) parameters including a scaling factor and an offset factor; performing or skipping a pre-process on at least partial of the set of LIC parameters; and updating at least one history based local illumination compensation parameter table (HLICT) using at least partial of the set of LIC parameters, the at least one HLICT being used for a conversion of subsequent video units.

公开(公告)号：US12200242B2

公开(公告)日：2025-01-14

申请号：US18156040

申请日：2023-01-18

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

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

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/184 ,  H04N19/52

Abstract: Devices, systems, and methods for digital video coding, which includes constructing separate motion candidate lists for video coding, are described. An exemplary method for video processing includes constructing, for a first video block of a video, a first motion candidate list using a first motion candidate list construction method that excludes motion candidates that are only derived from temporal blocks, and performing a conversion between the first video block and a bitstream representation of the video including the first video block according to the constructed first motion candidate list.

公开(公告)号：US12126802B2

公开(公告)日：2024-10-22

申请号：US17473440

申请日：2021-09-13

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

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

IPC: H04N19/122 ,  H04N19/105 ,  H04N19/119 ,  H04N19/13 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/60 ,  H04N19/70

CPC classification number: H04N19/122 ,  H04N19/105 ,  H04N19/119 ,  H04N19/13 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/60 ,  H04N19/70

Abstract: A method for video processing includes applying a sub-block residual coding scheme to a current video block, wherein the residual of the current video block is split into a plurality of sub-blocks each having a size of M*N, determining at least one sub-block with non-zero coefficients based on characteristic associated with each of the plurality of sub-blocks; coding the residue of the current video block based on the derived at least one sub-block with non-zero coefficients.

公开(公告)号：US12113986B2

公开(公告)日：2024-10-08

申请号：US17551392

申请日：2021-12-15

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

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

IPC: H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/96

CPC classification number: 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.

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：US12096026B2

公开(公告)日：2024-09-17

申请号：US18301846

申请日：2023-04-17

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

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

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186

Abstract: A method of video processing is described. The method includes: determining, based on a coding mode of a current video block of a video, whether a position dependent intra prediction combination (PDPC) method is used for coding the current video block based on a first rule, and performing a conversion between the current video block and a coded representation of the video according to the determining, wherein the PDPC method combines neighboring samples with a prediction signal of the current video block to generate a refined prediction signal of the current video block.

公开(公告)号：US12088834B2

公开(公告)日：2024-09-10

申请号：US17386519

申请日：2021-07-27

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

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

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/146 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/423 ,  H04N19/433 ,  H04N19/517 ,  H04N19/52 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82 ,  H04N19/96 ,  H04N19/117 ,  H04N19/86

CPC classification number: H04N19/433 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/146 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/423 ,  H04N19/517 ,  H04N19/52 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82 ,  H04N19/96 ,  H04N19/117 ,  H04N19/86

Abstract: A method of visual media processing includes determining a size of a buffer to store reference samples for prediction in an intra block copy mode; and performing a conversion between a current video block of visual media data and a bitstream of the current video block, using the reference samples stored in the buffer, wherein the conversion is performed in the intra block copy mode which is based on motion information related to a reconstructed block located in same video region with the current video block without referring to a reference picture.

公开(公告)号：US12081767B2

公开(公告)日：2024-09-03

申请号：US17389200

申请日：2021-07-29

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

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

IPC: H04N19/139 ,  H04N19/176 ,  H04N19/51

CPC classification number: H04N19/139 ,  H04N19/176 ,  H04N19/51

Abstract: Interaction between MV precisions and MV difference coding is described. In an exemplary aspect, a method for video processing includes determining, for a conversion between a first block of video and a bitstream representation of the first block, whether a symmetric motion vector difference (SMVD) mode for the first block is enabled or disabled and/or how to apply the SMVD mode for the first block, based on at least one of motion information, a motion vector difference (MVD) precision and a motion vector (MV) precision of the first block; and performing the conversion based on the determining.