公开(公告)号：US20200252619A1

公开(公告)日：2020-08-06

申请号：US16850509

申请日：2020-04-16

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

Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Jizheng XU ,  Yue WANG

IPC: H04N19/149 ,  H04N19/132 ,  H04N19/105 ,  H04N19/30 ,  H04N19/186 ,  H04N19/176

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, parameters of a cross-component linear model based on R chroma samples from a group of neighboring chroma samples, wherein the R chroma samples are selected from the group based on a position rule; and performing the conversion based on the determining and R is greater than or equal to 2.

公开(公告)号：US20250097481A1

公开(公告)日：2025-03-20

申请号：US18896472

申请日：2024-09-25

Applicant: Bytedance Inc.

Inventor： Jizheng XU ,  Li ZHANG

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

Abstract: Embodiments of the disclosure provide a solution for video processing. A method for video processing is proposed. The method includes: determining, during a conversion between a video unit of a video and a bitstream of the video unit, a set of coding tree units (CTUs) included in an intra block copy (IBC) buffer or an IBC reference area of the video unit based on a current CTU, the video unit being applied with an IBC mode; and performing the conversion based on the set of CTUs.

公开(公告)号：US20240275993A1

公开(公告)日：2024-08-15

申请号：US18586214

申请日：2024-02-23

Applicant: Bytedance Inc.

Inventor： Jizheng XU ,  Li ZHANG

IPC: H04N19/196

CPC classification number: H04N19/196

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 video unit of a video and a bitstream of the video unit, a first size parameter of an intra block copy (IBC) buffer based on a second size parameter of the video unit, a first value of the first size parameter being an integer multiple of a second value of the second size parameter and the video unit being applied with an IBC mode; and performing the conversion based on the IBC buffer.

公开(公告)号：US20240195986A1

公开(公告)日：2024-06-13

申请号：US18418037

申请日：2024-01-19

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

Inventor： Yan HUANG ,  Jizheng XU ,  Li ZHANG ,  Li SONG

IPC: H04N19/176 ,  G06V10/74 ,  H04N19/119 ,  H04N19/159 ,  H04N19/96

CPC classification number: H04N19/176 ,  G06V10/761 ,  H04N19/119 ,  H04N19/159 ,  H04N19/96

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 target video block of a video and a bitstream of the video, a prediction of coding time for the target video block, the coding time representing a time duration during which a coding process of the target video block being performed; adjusting the coding process for the target video block based at least in part on the prediction of coding time; and performing the conversion between the target video block and the bitstream by using the adjusted coding process.

公开(公告)号：US20230037931A1

公开(公告)日：2023-02-09

申请号：US17942552

申请日：2022-09-12

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

Inventor： Zhipin DENG ,  Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Jizheng XU

IPC: H04N19/593 ,  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 encoding a current video block of a video using a matrix intra prediction (MIP) mode in which a prediction block of the current video block is determined 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; and adding, to a coded representation of the current video block, a syntax element indicative of applicability of the MIP mode to the current video block using arithmetic coding in which a context for the syntax element is derived based on a rule.

公开(公告)号：US20220368916A1

公开(公告)日：2022-11-17

申请号：US17356321

申请日：2021-06-23

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

Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Jizheng XU ,  Yue WANG

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/46 ,  H04N19/176

Abstract: Techniques for implementing video processing techniques are described. In one example implementation, a method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a manner in which coding information of the current block is represented in the bitstream representation in part based on whether a condition associated with a size of the current block is satisfied. The method also includes performing the conversion based on the determining.

公开(公告)号：US20220337844A1

公开(公告)日：2022-10-20

申请号：US17847005

申请日：2022-06-22

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: H04N19/132 ,  H04N19/137 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70

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 bitstream representation of the video, an applicability of a geometric partitioning mode based on a rule; and performing the conversion based on the determining, and wherein the rule depends on a block width, a block height, and/or an aspect ratio of the current video block.

公开(公告)号：US20220286672A1

公开(公告)日：2022-09-08

申请号：US17825998

申请日：2022-05-26

Applicant: Bytedance Inc.

Inventor： Weijia ZHU ,  Jizheng XU ,  Li ZHANG ,  Hsiao Chiang CHUANG ,  Kui FAN

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/147

Abstract: A method of video processing is described. The method includes performing a conversion between a current block of a video and a bitstream representation of the video, wherein the current block is coded with a dictionary-based coding mode using one or more dictionaries, and wherein the conversion is based on the one or more dictionaries.

公开(公告)号：US20220279169A1

公开(公告)日：2022-09-01

申请号：US17740753

申请日：2022-05-10

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

Inventor： Zhipin DENG ,  Li ZHANG ,  Hongbin LIU ,  Kai ZHANG ,  Jizheng XU

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/169 ,  H04N19/30 ,  H04N19/186 ,  H04N19/176

Abstract: A method for visual media processing, including: computing, during a conversion between a current video block of visual media data and a bitstream representation of the current video block, a cross-component linear model (CCLM) and/or a chroma residual scaling (CRS) factor for the current video block based, at least in part, on neighboring samples of a corresponding luma block which covers a top-left sample of a collocated luma block associated with the current video block, wherein one or more characteristics of the current video block are used for identifying the corresponding luma block.

公开(公告)号：US20220272347A1

公开(公告)日：2022-08-25

申请号：US17720582

申请日：2022-04-14

Applicant: Bytedance Inc.

Inventor： Weijia ZHU ,  Li ZHANG ,  Jizheng XU ,  Kai ZHANG

IPC: H04N19/132 ,  H04N19/117 ,  H04N19/186 ,  H04N19/176

Abstract: An example method of video processing includes determining, for a conversion between a chroma block of a video and a bitstream representation of the video, applicability of a deblocking filter process to at least some samples at an edge of the chroma block based on a mode of joint coding of chroma residuals for the chroma block. The method also includes performing the conversion based on the determining.