公开(公告)号：US20230336753A1

公开(公告)日：2023-10-19

申请号：US18339038

申请日：2023-06-21

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

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

IPC: H04N19/196 ,  H04N19/70 ,  H04N19/184

CPC classification number: H04N19/197 ,  H04N19/70 ,  H04N19/184

Abstract: A mechanism for processing video data is disclosed. Video decoder initialization information is signaled between an encoder to a decoder. The video decoder initialization information contains a range of initialization parameters. A conversion is performed between a visual media data and a visual media data file based on the range of initialization parameters.

公开(公告)号：US11659180B2

公开(公告)日：2023-05-23

申请号：US17824304

申请日：2022-05-25

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

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

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/70

Abstract: A method of video processing is provided to comprise: performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a use of a geometric partitioning mode is allowed for the current video block, and wherein parameters of the geometric partitioning mode are computed using a set of angles including a first number of angles that is less than a first threshold value and/or a set of distances including a second number of distances that is less than a second threshold value.

公开(公告)号：US20230036581A1

公开(公告)日：2023-02-02

申请号：US17950037

申请日：2022-09-21

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 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

Abstract: A method of video processing is provided. The method includes: determining, for a conversion between a video block of a video and a bitstream of the video, a selected neighboring sample list according to an order, wherein the order specifies that above neighboring samples are added to the selected neighboring sample list before left neighboring samples, and performing the conversion based on a cross-component linear model, wherein parameters of a cross-component linear model is derived using a derivation method that is based on samples from the selected neighboring sample list.

公开(公告)号：US20220394306A1

公开(公告)日：2022-12-08

申请号：US17888238

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 ,  H04N19/46 ,  H04N19/186 ,  H04N19/174

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

公开(公告)号：US20220394282A1

公开(公告)日：2022-12-08

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 ,  H04N19/96 ,  H04N19/132 ,  H04N19/176 ,  H04N19/159

Abstract: Video processing methods, systems and appratrus 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 representive 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：US12219138B2

公开(公告)日：2025-02-04

申请号：US17457473

申请日：2021-12-03

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

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

IPC: H04N19/122 ,  H04N19/176 ,  H04N19/18 ,  H04N19/625

Abstract: Devices, systems and methods for digital video coding, which includes using multiple transforms, are described. In a representative aspect, a method for video processing includes selecting, as part of a multiple transform selection (MTS) process, a common transform as both a vertical transform and a horizontal transform, and applying, as part of performing a conversion between a current block of a video and a bitstream representation of the video, the vertical transform and the horizontal transform to the current block.

公开(公告)号：US20250039375A1

公开(公告)日：2025-01-30

申请号：US18914488

申请日：2024-10-14

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

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

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

Abstract: BV list construction process of IBC blocks under merge estimation region is described. An example method of video processing includes determining, for a conversion between a current video block of a video and a bitstream of the video, one or more block vector (BV) candidates for the current video block based on a merge estimation region (MER) covering the current video block; adding the one or more BV candidates to a BV list associated with the current video block; and performing the conversion based on the BV list.

公开(公告)号：US12206846B2

公开(公告)日：2025-01-21

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: H04N19/00 ,  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：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：US20240236318A9

公开(公告)日：2024-07-11

申请号：US18400326

申请日：2023-12-29

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

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

IPC: H04N19/119 ,  H04N19/103 ,  H04N19/136 ,  H04N19/169 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/103 ,  H04N19/136 ,  H04N19/1883 ,  H04N19/61 ,  H04N19/70

Abstract: A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines to split a coding tree unit (CTU) into one or more coding units (CUs). One or more of the CUs may be one or more prediction tree units (PTUs). The mechanism further determines to recursively split the CUs into prediction units (PUs). The method performs a conversion between a visual media data and a bitstream based on the PUs.