公开(公告)号：US12022058B2

公开(公告)日：2024-06-25

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：US11968369B2

公开(公告)日：2024-04-23

申请号：US17968553

申请日：2022-10-18

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

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

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/11 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/11 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

Abstract: A method of video processing is provided. The method includes determining, for a conversion between a video comprising a video unit and a bitstream of the video, whether a first coding tool is enabled for the video unit according to a rule. The rule specifies that the first coding tool and a second coding tool are mutually exclusively enabled. The first coding tool or the second coding tool comprises a sign data hiding tool. The method also includes performing the conversion according to the determining.

公开(公告)号：US20240114132A1

公开(公告)日：2024-04-04

申请号：US18509804

申请日：2023-11-15

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

Inventor： Yang Wang ,  Hongbin Liu ,  Li Zhang

IPC: H04N19/117 ,  H04N19/167 ,  H04N19/186

CPC classification number: H04N19/117 ,  H04N19/167 ,  H04N19/186

Abstract: Techniques for implementing adaptive loop filtering are described. One example method of video processing includes making a first determination, for a conversion between a video unit of a video and a bitstream of the video, a first luma adaptive loop filter (ALF) boundary across which a luma adaptive loop filter is selectively applied to a luma component of the video unit and a second luma ALF boundary; making a second determination, from the second luma ALF boundary, a chroma ALF boundary across which a chroma adaptive loop filter is selectively applied for a chroma component of the video unit; and performing the conversion based on the first determination and the second determination.

公开(公告)号：US20240098267A1

公开(公告)日：2024-03-21

申请号：US18515482

申请日：2023-11-21

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 ,  H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

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

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, shift 1 is set equal to Max(2, 14−bitDepth); and determining the prediction block based on the final prediction sample.

公开(公告)号：US11917169B2

公开(公告)日：2024-02-27

申请号：US17882359

申请日：2022-08-05

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

Inventor： Jizheng Xu ,  Li Zhang ,  Ye-kui Wang ,  Kai Zhang ,  Weijia Zhu ,  Yue Wang ,  Yang Wang ,  Hongbin Liu

IPC: H04N19/186 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/186 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

Abstract: Video processing methods, systems and apparatus are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video using a palette mode in which samples of the video block are represented using a palette of representative color values. A size of the palette of the video block is determined based on whether a local dual tree is applied for the conversion.

公开(公告)号：US20240040140A1

公开(公告)日：2024-02-01

申请号：US18483669

申请日：2023-10-10

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

Inventor： Ye-Kui Wang ,  Yang Wang ,  Li Zhang

IPC: H04N19/46

CPC classification number: H04N19/46

Abstract: A method implemented by a video coding apparatus. The method includes determining that a scalability dimension information (SDI) supplemental enhancement information (SEI) message provides SDI for each layer in a current coded video sequence (CVS); and performing a conversion between a video and a bitstream of the video based on the SDI SEI message. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.

公开(公告)号：US20240031608A1

公开(公告)日：2024-01-25

申请号：US18476759

申请日：2023-09-28

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

Inventor： Yang Wang ,  Ye-Kui Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/46

Abstract: A method of processing video data includes using a scalability dimension information (SDI) supplemental enhancement information (SEI) message to indicate which primary layers are associated with an auxiliary layer when auxiliary information is present in a bitstream, and converting between a video media file and the bitstream based on the SDI SEI message. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.

公开(公告)号：US20240031565A1

公开(公告)日：2024-01-25

申请号：US18475776

申请日：2023-09-27

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

Inventor： Kai Zhang ,  Li Zhang ,  Zhipin Deng ,  Na Zhang ,  Yang Wang

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/70 ,  H04N19/159 ,  H04N19/593 ,  H04N19/119

CPC classification number: H04N19/11 ,  H04N19/176 ,  H04N19/70 ,  H04N19/159 ,  H04N19/593 ,  H04N19/119

Abstract: A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines whether a block is dyadic or non-dyadic. The mechanism also enables a coding tool associated with intra prediction when the block is determined to be dyadic. The mechanism also disables the coding tool when the block is determined to be non-dyadic. A conversion between a visual media data and a bitstream is performed by applying intra prediction to the block.

公开(公告)号：US11825123B2

公开(公告)日：2023-11-21

申请号：US17888227

申请日：2022-08-15

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

Inventor： Kai Zhang ,  Li Zhang ,  Yang Wang ,  Ye-kui Wang ,  Zhipin Deng ,  Jizheng Xu ,  Hongbin Liu

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/186 ,  H04N19/46 ,  H04N19/117 ,  H04N19/172 ,  H04N19/82 ,  H04N19/119 ,  H04N19/635

CPC classification number: H04N19/70 ,  H04N19/117 ,  H04N19/119 ,  H04N19/172 ,  H04N19/174 ,  H04N19/186 ,  H04N19/46 ,  H04N19/635 ,  H04N19/82

Abstract: A method includes performing a conversion between a video comprising a video unit and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a first syntax element indicating whether an in-loop filtering operation is performed across tile boundaries is selectively included in the bitstream based on whether or how the video unit is partitioned into tiles.

公开(公告)号：US20230345053A1

公开(公告)日：2023-10-26

申请号：US18343370

申请日：2023-06-28

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

Inventor： Ye-Kui Wang ,  Yang Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/46

Abstract: A mechanism for processing video data is disclosed. A dependent random access point (DRAP) sample entry is signaled in a DRAP sample group. The DRAP sample entry describes one or more DRAP samples. A conversion is performed between a visual media data and a visual media data file based on the DRAP sample entry.