公开(公告)号：US11825083B2

公开(公告)日：2023-11-21

申请号：US17723175

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: H04N19/00 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70 ,  H04N19/117 ,  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 determining, for a conversion between a block of a first sub-picture of a video and a bitstream representation of the video, whether to apply a deblocking process across an edge between the block and a neighboring block of a second sub-picture based on whether a loop filtering process is allowed across subpicture boundaries. The method also includes performing the conversion based on the determining.

公开(公告)号：US11805275B2

公开(公告)日：2023-10-31

申请号：US17453135

申请日：2021-11-01

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

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

IPC: H04N19/59 ,  H04N19/176 ,  H04N19/159 ,  H04N19/186 ,  H04N19/40 ,  H04N19/105 ,  H04N19/132 ,  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：US11785235B2

公开(公告)日：2023-10-10

申请号：US17319961

申请日：2021-05-13

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

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

IPC: H04N19/105 ,  H04N19/423 ,  H04N19/159 ,  H04N19/176 ,  H04N19/137 ,  H04N19/30 ,  H04N19/513 ,  H04N19/167 ,  H04N19/196 ,  H04N19/52

CPC classification number: H04N19/423 ,  H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/30 ,  H04N19/513 ,  H04N19/52

Abstract: Usage for History-based affine parameters is described. In an exemplary aspect, a method for video processing includes deriving, for a conversion between a current block of video and a bitstream representation of the current block, affine related information associated with affine model for the current block based on affine parameters stored in a buffer for storing affine related information of blocks coded prior the current block; and performing the conversion by using the affine related information.

公开(公告)号：US20230308691A1

公开(公告)日：2023-09-28

申请号：US18295568

申请日：2023-04-04

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

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

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/70 ,  H04N19/176 ,  H04N19/186

Abstract: A method for visual media processing includes processing a bitstream representation for a conversion between a current video block in a video region of a visual media data and the bitstream representation. The bitstream representation is based on a rule that specifies that one or more syntax elements used in a luma-dependent chroma residual scaling step are selectively included in the bitstream representation. The luma-dependent chroma residual scaling step includes scaling chroma samples based on neighboring reconstructed luma samples during the conversion. The one or more syntax elements are usable to derive a chroma residual scaling factor used for the scaling.

公开(公告)号：US11758196B2

公开(公告)日：2023-09-12

申请号：US17713063

申请日：2022-04-04

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

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

IPC: H04N19/12 ,  H04N19/186 ,  H04N19/70 ,  H04N19/172 ,  H04N19/174 ,  H04N19/30 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/132 ,  H04N19/137 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/46

Abstract: An example method of video processing includes performing a conversion between a block of a chroma component of a video and a bitstream representation of the video using a partitioning mode coding tool in which a final prediction of the chroma block is determined by blending predictions of the chroma block using weights that are based on the partitions. During the conversion, the weights are determined based on a type of chroma sample locations in the chroma component of the block.

公开(公告)号：US11750799B2

公开(公告)日：2023-09-05

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 ,  H04N19/176 ,  H04N19/186 ,  H04N19/169 ,  H04N19/30

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/30

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：US11743504B2

公开(公告)日：2023-08-29

申请号：US17718880

申请日：2022-04-12

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

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

IPC: H04N19/70 ,  H04N19/159 ,  H04N19/174 ,  H04N19/169 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/188 ,  H04N19/46

Abstract: An example method of video processing includes performing a conversion between a video including a video picture including one or more video units and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies that a first syntax element is included in a header of the video picture indicating allowed prediction types of at least some of the one or more video units in the video picture.

公开(公告)号：US20230247192A1

公开(公告)日：2023-08-03

申请号：US18296655

申请日：2023-04-06

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

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

IPC: H04N19/105 ,  H04N19/96 ,  H04N19/176 ,  H04N19/139

CPC classification number: H04N19/105 ,  H04N19/96 ,  H04N19/176 ,  H04N19/139

Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a video picture of a video and a coded representation of the video, whether or how to reset reference sample values of a reference region of the video picture used for predicting the current video block according to a rule; and performing the conversion based on the determining.

公开(公告)号：US20230246834A1

公开(公告)日：2023-08-03

申请号：US18191972

申请日：2023-03-29

Applicant: Bytedance Inc.

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

IPC: H04L9/30 ,  H04N21/2347 ,  H04L9/06

CPC classification number: H04L9/30 ,  H04N21/2347 ,  H04L9/0643

Abstract: Methods, systems, and devices for media processing are described. One example method of processing digital media includes performing a conversion between a media segment and a bitstream of the media segment, the conversion conforming to a format rule and an encryption rule, and the format rule specifying that an indication of an integrity of a portion of the media segment is signaled in the bitstream. In an example, the media segment is a video segment, an audio segment, or an image.

公开(公告)号：US11700378B2

公开(公告)日：2023-07-11

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

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/137 ,  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.