公开(公告)号：US20250047855A1

公开(公告)日：2025-02-06

申请号：US18896281

申请日：2024-09-25

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

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

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/70

Abstract: Method of processing video data is disclosed. A method for video processing includes dividing, for a conversion between a block of a video and a bitstream of the block, syntax elements associated with the block into different groups of syntax elements; applying controls on the different groups of syntax elements separately; and performing the conversion based on the controls.

公开(公告)号：US20250024065A1

公开(公告)日：2025-01-16

申请号：US18895908

申请日：2024-09-25

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

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

IPC: H04N19/513 ,  H04N19/176

Abstract: A method for video processing is provided. The method includes making a determination, for a conversion between a current video block of a video and a coded representation of the current video block, of whether to use a symmetric motion vector difference (SMVD) mode based on a currently selected best mode for the conversion; and performing the conversion based on the determining.

公开(公告)号：US12184865B2

公开(公告)日：2024-12-31

申请号：US18310344

申请日：2023-05-01

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

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

IPC: H04N19/149 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/189 ,  H04N19/30 ,  H04N19/42 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70

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：US12170766B2

公开(公告)日：2024-12-17

申请号：US17958531

申请日：2022-10-03

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

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

IPC: H04N19/117 ,  H04N19/124 ,  H04N19/186 ,  H04N19/196 ,  H04N19/70 ,  H04N19/86 ,  H04N19/157

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 and a bitstream of the video according to a format rule. The format rule specifies that a first field at a sequence level or a picture level or a slice level controls a value of a second field in an adaptation parameter set.

公开(公告)号：US12166968B2

公开(公告)日：2024-12-10

申请号：US17895511

申请日：2022-08-25

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

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

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block according to a rule, where the rule specifies a relationship between samples of the current video block and matrices or offset values applied in a matrix weighted intra prediction (MIP) mode during the conversion, and where the MIP mode includes determining a prediction block of the current video block by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation.

公开(公告)号：US12137257B2

公开(公告)日：2024-11-05

申请号：US17389179

申请日：2021-07-29

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

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

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/12 ,  H04N19/122 ,  H04N19/13 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: A method for processing a video includes determining a valid splitting type for a current video block; determining whether or how to signal a splitting type to be used for the current video block based on the determination of the valid splitting type; and performing a conversion between the current video block and a bitstream representation of the current video block in accordance with the determining results.

公开(公告)号：US12137252B2

公开(公告)日：2024-11-05

申请号：US18450647

申请日：2023-08-16

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

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

IPC: H04N19/46 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  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 video including one or more video regions and a bitstream of the video according to a format rule. The format rule specifies that a variable X indicates whether B slice is allowed or used in a video region. The format rule further specifies that the variable X is based on values of a reference picture list information present flag and/or a field indicating a number of entries in a reference picture list syntax structure.

公开(公告)号：US12132884B2

公开(公告)日：2024-10-29

申请号：US17585704

申请日：2022-01-27

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 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a number of intra-coded neighboring blocks of the current block for a combined inter and intra prediction mode according to a rule that specifies a manner of treating a block coded using a palette coding mode in counting the number of intra-coded neighboring blocks for the combined inter and intra prediction mode. The method also includes performing the conversion based on the determining.

公开(公告)号：US20240357174A1

公开(公告)日：2024-10-24

申请号：US18763998

申请日：2024-07-03

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

Inventor： Yingzhan Xu ,  Wenyi Wang ,  Kai Zhang ,  Li Zhang

IPC: H04N19/597 ,  H04N19/159 ,  H04N19/513

CPC classification number: H04N19/597 ,  H04N19/159 ,  H04N19/513

Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: determining, based on a target motion information between a current frame of a point cloud sequence and a reference frame of the current frame during a conversion between the current frame and a bitstream of the point cloud sequence, whether an attribute inter prediction is performed on the current frame based on the reference frame, the target motion information being used for performing a motion compensation on the reference frame; and performing the conversion based on the determination.

公开(公告)号：US20240357157A1

公开(公告)日：2024-10-24

申请号：US18763028

申请日：2024-07-03

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

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

IPC: H04N19/52 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/513 ,  H04N19/577

CPC classification number: H04N19/52 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/513 ,  H04N19/577

Abstract: One example method of video processing includes implementing, by a processor, a decoder-side motion vector derivation (DMVD) scheme for motion vector refinement during a conversion between a current video block and a bitstream representation of the current video block by deriving parameters based on a deriving rule. The conversion may include compressing the current video block into the bitstream representation or uncompressing the bitstream representation into pixel values of the current video block.