公开(公告)号：US20250150575A1

公开(公告)日：2025-05-08

申请号：US18991172

申请日：2024-12-20

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

Inventor： Mehdi SALEHIFAR ,  Yuwen He ,  Kai Zhang ,  Na Zhang ,  Li Zhang

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, for a conversion between a current video block of a video and a bitstream of the video, a motion candidate list for the current video block; determining, based on a similarity metric between a first motion candidate and a second motion candidate in the motion candidate list, whether to update the motion candidate list; and performing the conversion based on the determination.

公开(公告)号：US11956448B2

公开(公告)日：2024-04-09

申请号：US18076869

申请日：2022-12-07

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

Inventor： Kai Zhang ,  Yuwen He ,  Li Zhang ,  Hongbin Liu ,  Tianliang Fu ,  Junru Li ,  Siwei Ma

IPC: H04N19/157 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/157 ,  H04N19/176 ,  H04N19/186

Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.

公开(公告)号：US20240129489A1

公开(公告)日：2024-04-18

申请号：US18511582

申请日：2023-11-16

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

Inventor： Kai Zhang ,  Yuwen He ,  Li Zhang ,  Hongbin Liu ,  Tianliang Fu ,  Junru Li ,  Siwei Ma

IPC: H04N19/157 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/157 ,  H04N19/176 ,  H04N19/186

Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.

公开(公告)号：US20240244223A1

公开(公告)日：2024-07-18

申请号：US18622814

申请日：2024-03-29

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

Inventor： Mehdi Salehifar ,  Yuwen He ,  Kai Zhang ,  Na Zhang ,  Li Zhang

IPC: H04N19/139 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/139 ,  H04N19/176 ,  H04N19/46

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 current video block of a video and a bitstream of the video, a motion candidate for the current video block based on merge mode with motion vector differences (MMVD) with an initial set of search points, a first direction of a first search point in the initial set of search points being non-vertical and non-horizontal; and performing the conversion based on the motion candidate. Compared with the conventional solution, the proposed method can advantageously improve coding efficiency and coding quality.

公开(公告)号：US12267520B2

公开(公告)日：2025-04-01

申请号：US18280000

申请日：2022-03-02

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

Inventor： Xueqing Li ,  Li Zhang ,  Yuwen He

IPC: H04N7/12 ,  H04N19/139 ,  H04N19/467 ,  H04N19/513 ,  H04N21/4402

Abstract: A method, device, and storage/recording medium for image encoding, including: obtaining first coding information for a first coding unit, in a first image, indicating a scheme for encoding the first coding unit into a first bitstream of the first image; determining, based on a relative position relationship between a target region in a second image obtained from the first image and a second coding unit in the second image, a reuse mode for the second coding unit regarding the first coding information, the second coding unit corresponding to the first coding unit, the target region indicating a region in the second image different from the first image; determining second coding information for the second coding unit based on the reuse mode; and generating a second bitstream for the second image based on the second coding information. Thereby, reducing computational complexity of transcoding and avoiding degradation of coding performance/quality.

公开(公告)号：US11968368B2

公开(公告)日：2024-04-23

申请号：US17848535

申请日：2022-06-24

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

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

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

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

Abstract: A method of video processing includes performing a conversion between a current video block of a second color component of a video and a bitstream of the video using a cross-component prediction with multiple-parameter model (CCPMPM) in which samples of the current video block are predictively coded in the bitstream using a linear combination of samples of a first color component multiplied by linear coefficients and/or one or more offsets. The bitstream conforms to a format rule. The linear coefficients of the CCPMPM are determined using a first rule. The samples of the first color component are determined using a second rule.