公开(公告)号：US12063362B2

公开(公告)日：2024-08-13

申请号：US17748687

申请日：2022-05-19

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

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

IPC: H04N19/117 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/31 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/31 ,  H04N19/70 ,  H04N19/82

Abstract: Devices, systems and methods for digital video coding, which includes in-loop reshaping for video coding, are described. An exemplary method for video processing includes performing a conversion between a video comprising one or more video data units and a bitstream representation of the video, the bitstream representation conforming to a format rule that specifies an inclusion of side information indicative of default parameters for a coding mode that is applicable to a video block of the one or more video data units for which the coding mode is enabled, and the side information providing parameters for constructing the video block based on a representation of the video block in an original domain and a reshaped domain and/or a luma-dependent scaling of a chroma residue of a chroma video block.

公开(公告)号：US12063348B2

公开(公告)日：2024-08-13

申请号：US17691910

申请日：2022-03-10

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

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

IPC: H04N19/132 ,  H04N19/103 ,  H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/50

CPC classification number: H04N19/103 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/50

Abstract: A method of video processing is described. The method includes: deriving, for a conversion between a current block of a video and a coded representation of the video, a prediction block for the current block that is determined according to a tool in which weights are used to determine a weighted sum of two initial prediction blocks used to determine the prediction block; and performing the conversion using the prediction block; wherein the deriving includes: applying the weights to two intermediate prediction samples that respectively belong to the two initial prediction blocks to derive a final prediction sample; and performing a right shift operation for the final prediction sample, wherein the right shift operation is pbSample>> (shift1+3)), wherein pbSample represents the final prediction sample, shift1 is set equal to Max(2, 14−bitDepth); and determining the prediction block based on the final prediction sample.

公开(公告)号：US12047558B2

公开(公告)日：2024-07-23

申请号：US17665275

申请日：2022-02-04

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

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

IPC: H04N19/105 ,  H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/157 ,  H04N19/167 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/157 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/30 ,  H04N19/70

Abstract: A method of video processing includes performing a conversion between a video unit of a video and a coded representation of the video using at least a video picture. Only one of a sub-picture coding mode or a resolution-changing coding mode is enabled for the video unit. The sub-picture coding mode is a mode in which the video picture is divided into multiple sub-pictures, and the resolution-changing coding mode is a mode in which a resolution of the video picture is adjusted during the conversion.

公开(公告)号：US12034942B2

公开(公告)日：2024-07-09

申请号：US17873973

申请日：2022-07-26

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

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

IPC: H04N19/176 ,  H04N19/186 ,  H04N19/593

CPC classification number: H04N19/186 ,  H04N19/593

Abstract: A method for visual media processing, including: using a rule that specifies representing, based on a fixed value, a chroma residual scaling factor for at least one chroma block associated with a current video unit of visual media data, wherein the fixed value is based at least on one or more conditions; and performing a conversion between the current video unit and a bitstream representation of the current video unit.

公开(公告)号：US12022114B2

公开(公告)日：2024-06-25

申请号：US18295553

申请日：2023-04-04

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

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

IPC: H04N19/59 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/40 ,  H04N19/70

CPC classification number: H04N19/59 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/40 ,  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 first determination whether a luma video block of a video is coded using a matrix based intra prediction (MIP) mode; performing a second determination that the luma video block is applicable for determining a chroma intra mode for a current chroma video block of the video; performing, based on the first determination and the second determination, a third determination about the chroma intra mode to be used for the current chroma video block; and performing, based on the third determination, a conversion between the current chroma video block and a bitstream representation of the current chroma video block.

公开(公告)号：US12022062B2

公开(公告)日：2024-06-25

申请号：US18081404

申请日：2022-12-14

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

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

IPC: H04N19/105 ,  H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/157 ,  H04N19/167 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/157 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/30 ,  H04N19/70

Abstract: A method of video processing includes performing a conversion between a video unit of a video and a coded representation of the video using at least a video picture. Only one of a subpicture coding mode or a resolution-changing coding mode is enabled for the video unit. The subpicture coding mode is a mode in which the video picture is divided into multiple subpictures, and the resolution-changing coding mode is a mode in which a resolution of the video picture is adjusted during the conversion.

公开(公告)号：US20240137554A1

公开(公告)日：2024-04-25

申请号：US18531153

申请日：2023-12-06

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

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

IPC: H04N19/517 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/513 ,  H04N19/573 ,  H04N19/577

CPC classification number: H04N19/517 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/521 ,  H04N19/573 ,  H04N19/577

Abstract: A method for processing a video includes performing a conversion between a current block of visual media data and a corresponding coded representation of the visual media data. The conversion of the current block includes determining whether a use of one or both of a bi-directional optical flow (BIO) technique or a decoder-side motion vector refinement (DMVR) technique to the current block is enabled or disabled. Determining the use of the BIO technique or the DMVR technique is based on a cost criterion associated with the current block.

公开(公告)号：US20240129541A1

公开(公告)日：2024-04-18

申请号：US18525057

申请日：2023-11-30

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/172 ,  H04N19/186

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/172 ,  H04N19/186

Abstract: Embodiments for video encoding and video decoding are described. One example method includes performing a conversion between a video and a bitstream of the video according to a rule, wherein the rule specifies that only one of two conditions is true when a number of subpictures minus 1 indicated by a first syntax element in a sequence parameter set is greater than zero and when a current subpicture with a subpicture index subpicIdx of a first video picture of the video has a second syntax element in the sequence parameter set indicates that a subpicture with the subpicture index subpicIdx of each video picture of the video in a coded layer video sequence is treated as a video picture in a decoding process that excludes an in-loop filtering operation.

公开(公告)号：US11962771B2

公开(公告)日：2024-04-16

申请号：US17723089

申请日：2022-04-18

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

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

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

CPC classification number: H04N19/119 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

Abstract: An example method of video processing includes performing a conversion between a picture of a video and a bitstream representation of the video. The picture includes one or more sub-pictures, and the bitstream representation conforms to a format rule that specifies that a length of a syntax element is equal to Ceil(Log 2(SS)) bits. SS is greater than 0, and the syntax element indicating a horizontal or a vertical position of a top-left corner of a coding tree unit of a sub-picture of the picture.

公开(公告)号：US11949880B2

公开(公告)日：2024-04-02

申请号：US17684694

申请日：2022-03-02

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

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

IPC: H04N19/157 ,  H04N9/64 ,  H04N19/109 ,  H04N19/119 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/503

CPC classification number: H04N19/157 ,  H04N9/64 ,  H04N19/109 ,  H04N19/119 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/503

Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a video and a coded representation of the video, whether a certain partitioning scheme is allowed for the current video block according to a rule that depends on a coding mode type used for representing the current video block in the coded representation and a dimension of the current video block; and performing the conversion based on the determining.