公开(公告)号：US11652987B2

公开(公告)日：2023-05-16

申请号：US17580446

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 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/186

Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes performing a conversion between a video comprising luma blocks and corresponding chroma blocks and a bitstream representation of the video according to a rule that specifies that, for a case that a current luma block is coded using a palette coding mode and a corresponding current chroma block coded with a derived mode, the current luma block is treated as having a default intra prediction mode and the current chroma block is coded with the default intra prediction mode.

公开(公告)号：US11641478B2

公开(公告)日：2023-05-02

申请号：US17675843

申请日：2022-02-18

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

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

IPC: H04N19/33 ,  H04N19/159 ,  H04N19/12 ,  H04N19/124 ,  H04N19/136 ,  H04N19/157 ,  H04N19/167 ,  H04N19/70 ,  H04N19/18 ,  H04N19/30 ,  H04N19/176 ,  H04N19/50 ,  H04N19/61

Abstract: A video processing method includes determining, fora conversion between a video block of a video and a coded representation of the video, factors of a scaling tool based on a coding mode of the video block; and performing the conversion using the scaling tool, wherein the use of the scaling tool comprises: scaling at least some coefficients representing the video block during encoding or descaling at least some coefficients from the coded representation during decoding.

公开(公告)号：US11641474B2

公开(公告)日：2023-05-02

申请号：US17246794

申请日：2021-05-03

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

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

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/70 ,  H04N19/159 ,  H04N19/149 ,  H04N19/132 ,  H04N19/30 ,  H04N19/593 ,  H04N19/11 ,  H04N19/50

Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.

公开(公告)号：US11638038B2

公开(公告)日：2023-04-25

申请号：US17718785

申请日：2022-04-12

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

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

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/159 ,  H04N19/176 ,  H04N19/174 ,  H04N19/169

Abstract: An example method of video processing includes performing a conversion between a video picture of a video and a bitstream representation of the video. The bitstream representation conforms to a format rule. The format rule specifies that applicability of a Decoder-side Motion Vector Refinement coding tool and a Bi-Directional Optical Flow coding tool for the video picture are indicated separately in the bitstream representation.

公开(公告)号：US20230117813A1

公开(公告)日：2023-04-20

申请号：US18083956

申请日：2022-12-19

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

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

IPC: H04N19/30 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/146 ,  H04N19/196 ,  H04N19/96

Abstract: A method for visual media processing, including performing a conversion between a current chroma video block of visual media data and a bitstream representation of the current chroma video block. During the conversion, a chroma residual of the current chroma video block is scaled based on a scaling coefficient. The scaling coefficient is derived at least based on luma samples located in predefined positions.

公开(公告)号：US11632548B2

公开(公告)日：2023-04-18

申请号：US17244533

申请日：2021-04-29

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

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

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/139 ,  H04N19/159 ,  H04N19/52 ,  H04N19/46

Abstract: Devices, systems and methods for digital video coding, which include geometric partitioning, are described. An exemplary method for video processing includes making a decision, based on a priority rule, regarding an order of insertion of motion candidates into a motion candidate list for a conversion between a current block of video and a bitstream representation of the video, wherein the current block is coded using a geometry partition mode; and performing, based on the decision and the motion candidate list, the conversion.

公开(公告)号：US20230115541A1

公开(公告)日：2023-04-13

申请号：US17992270

申请日：2022-11-22

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

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

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/169 ,  H04N19/186 ,  H04N19/174

Abstract: Methods, systems, apparatus for video processing are described. The processing may include encoding, decoding or transcoding. One example video processing method includes performing a conversion between a video and a bitstream of the video according to a rule, and wherein the rule specifies that a syntax element is included in a profile, tier, level information syntax structure to indicate whether one or more general constraint information syntax elements are included in a general constraint information syntax structure and/or whether the general constraint information syntax structure is included in the profile, tier, level information syntax structure.

公开(公告)号：US20230115118A1

公开(公告)日：2023-04-13

申请号：US17976189

申请日：2022-10-28

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

Inventor： Yang Wang ,  Li Zhang ,  Zhipin Deng ,  Kai Zhang ,  Hongbin Liu

IPC: H04N19/137 ,  H04N19/189 ,  H04N19/176 ,  H04N19/70

Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example method of video processing includes performing a conversion between a block of a video and a bitstream of the video according to a rule. The conversion is based on an adaptive motion vector difference resolution (AMVR) tool, and the rule specifies that selection of a context for a first bin within a bin string of a first syntax element that specifies the resolution of the motion vector difference associated with an AMVR shift is derived based on usage of a coding mode for the block.

公开(公告)号：US20230114860A1

公开(公告)日：2023-04-13

申请号：US17973810

申请日：2022-10-26

Applicant: Bytedance Inc.

Inventor： Li Zhang ,  Ye-kui Wang ,  Kai Zhang

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/105 ,  H04N19/174

Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example method of video processing includes performing a conversion between a video including one or more pictures and a bitstream of the video according to a format rule. The format rule specifies that a first syntax element that indicates whether motion vector difference for a particular reference picture list (RPL) is indicated is conditionally included in the bitstream based on (i) whether a second syntax element indicating whether an RPL information is included in a picture header and/or (ii) a number of reference pictures in the particular RPL in case that the RPL information is present in the picture header.

公开(公告)号：US11627333B2

公开(公告)日：2023-04-11

申请号：US17330945

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: H04N19/30 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/52 ,  H04N19/105 ,  H04N19/117 ,  H04N19/184 ,  H04N19/70

Abstract: A method for video processing is provided to include: making a determination that a coding mode is enabled for a conversion between a current video block of a video and a coded representation of the video; and performing the conversion using a palette prediction mode wherein at least a palette of representative sample values is used for the current video block, and wherein, in the coding mode, the current video block is constructed based on samples in a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner.