公开(公告)号：US20240305824A1

公开(公告)日：2024-09-12

申请号：US18649724

申请日：2024-04-29

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

Inventor： Zhipin DENG ,  Kai ZHANG ,  Li ZHANG

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

CPC classification number: H04N19/61 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target block of a video and a bitstream of the target block, a primary transform coefficient of the target block; applying a secondary transform to the primary transform coefficient based on a primary transform of the target block; and performing the conversion based on the primary and secondary transforms.

公开(公告)号：US20240259591A1

公开(公告)日：2024-08-01

申请号：US18561667

申请日：2022-05-17

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

Inventor： Zhipin DENG ,  Li ZHANG ,  Kai ZHANG ,  Na ZHANG

IPC: H04N19/577 ,  H04N19/109 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184 ,  H04N19/52

CPC classification number: H04N19/577 ,  H04N19/109 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184 ,  H04N19/52

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a target video block of a video and a bitstream of the video, bilateral matching to refine uni-directional motion information for the target video block, to obtain refined motion information; and performing the conversion based on the refined motion information. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and performance.

公开(公告)号：US20240205390A1

公开(公告)日：2024-06-20

申请号：US18593696

申请日：2024-03-01

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

Inventor： Zhipin DENG ,  Kai Zhang ,  Li Zhang

IPC: H04N19/105 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/70

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a video unit of a video and a bitstream of the video unit, multiple hypothesis information of the video unit, the video unit being a multiple hypothesis coded video unit; inserting the multiple hypothesis information into a history-based motion candidate table; and performing the conversion based on the history-based motion candidate table.

公开(公告)号：US20240196001A1

公开(公告)日：2024-06-13

申请号：US18287602

申请日：2022-04-21

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

Inventor： Zhipin DENG ,  Li ZHANG ,  Kai ZHANG ,  Na ZHANG

IPC: H04N19/52 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/583

CPC classification number: H04N19/52 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/583

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a target video unit in a target picture of a video and a bitstream of the video, second coding data of the target video unit based on first coding data of the target video and a refinement process, the first coding data being coded by a target coding mode; and performing the conversion based on the second coding data. Compared with the conventional solution, the proposed method can advantageously improve the coding performance and efficiency.

公开(公告)号：US20240187633A1

公开(公告)日：2024-06-06

申请号：US18287605

申请日：2022-04-21

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

Inventor： Zhipin DENG ,  Li ZHANG ,  Kai ZHANG ,  Na ZHANG

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/513 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, during a conversion between a target video unit in a target picture of a video and a bitstream of the video, second coding data of the target video unit based on first coding data of the target video unit and at least one refinement process, the at least one refinement process being applied based on a predefined criterion; and performing the conversion based on the second coding data. Compared with the conventional solution, the proposed method can advantageously improve the coding performance and efficiency.

公开(公告)号：US20240155111A1

公开(公告)日：2024-05-09

申请号：US18412304

申请日：2024-01-12

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

Inventor： Na ZHANG ,  Zhipin DENG ,  Li ZHANG ,  Kai ZHANG

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

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

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: constructing, during a conversion between a target block of a video and a bitstream of the target block, a motion candidate list for a target block which is coded with a geometric partitioning mode (GPM), the candidate list comprising one or more candidates; processing the candidate list before applying the candidate list, each candidate in the processed candidate list having a coded candidate index; and performing the conversion using the processed candidate list.

公开(公告)号：US20240137496A1

公开(公告)日：2024-04-25

申请号：US18539042

申请日：2023-12-13

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

Inventor： Zhipin DENG ,  Kai Zhang ,  Li Zhang

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

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

Abstract: Embodiments of the present disclosure provide a method for video processing. The method comprises: applying, during a conversion between a target block of a video and a bitstream of the video, a gradient-based position dependent pre-diction combination to the target block in a coding mode, a gradient of a number of neighboring samples of the target block being used in the gradient-based position dependent prediction combination; and performing the conversion based on the applying.

公开(公告)号：US20230046994A1

公开(公告)日：2023-02-16

申请号：US17849293

申请日：2022-06-24

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

Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Zhipin DENG ,  Jizheng XU ,  Ye-kui WANG

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

Abstract: Devices, systems and methods related to digital video coding, and specifically, to signaling of slice types in video picture headers are described. One example method of video processing includes performing a conversion between a video including one or more video pictures including one or more slices and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that for a video picture of the one or more video pictures having all slices coded as I slices, P slice and B slice related syntax elements are omitted from a picture header for the video picture.

公开(公告)号：US20220272354A1

公开(公告)日：2022-08-25

申请号：US17729404

申请日：2022-04-26

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

Inventor： Hongbin LIU ,  Li ZHANG ,  Kai ZHANG ,  Zhipin DENG ,  Yue WANG

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70

Abstract: Symmetric motion vector difference coding is described. One example video processing method includes determining, for a conversion between a block of a current picture of video and a bitstream representation of the block, whether a symmetric motion vector difference (SMVD) mode is allowable for the block, wherein whether the SMVD mode is allowable depends on a derivation process of two target reference pictures of the current picture, which includes a first step for searching a forward target reference picture in the reference picture list 0 and searching a backward target reference picture in the reference picture list 1, and a second step for searching a backward target reference picture in the reference picture list 0 and searching a forward target reference picture in the reference picture list 1, outputs of the first step and the second step being independent of each other; and performing the conversion based on the determination.

公开(公告)号：US20220272324A1

公开(公告)日：2022-08-25

申请号：US17727542

申请日：2022-04-22

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

Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Zhipin DENG ,  Jizheng XU ,  Yue WANG

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a coded representation of the video, that a resolution of a current picture containing the current block and a reference picture used for the conversion are different, and performing the conversion based on the determining such that predicted values of a group of samples of the current block are generated using a horizontal or a vertical interpolation filter.