公开(公告)号：US11659167B2

公开(公告)日：2023-05-23

申请号：US17727542

申请日：2022-04-22

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 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a coded representation of the video, that a resolution of a current picture containing the current block and a reference picture used for the conversion are different, and performing the conversion based on the determining such that predicted values of a group of samples of the current block are generated using a horizontal or a vertical interpolation filter.

公开(公告)号：US11659164B1

公开(公告)日：2023-05-23

申请号：US17406284

申请日：2021-08-19

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：US11659162B2

公开(公告)日：2023-05-23

申请号：US17230048

申请日：2021-04-14

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

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

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/436 ,  H04N19/70 ,  H04N19/186 ,  H04N19/52 ,  H04N19/55 ,  H04N19/96

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/436 ,  H04N19/52 ,  H04N19/55 ,  H04N19/70 ,  H04N19/96

Abstract: A video processing method is provided to include: determining, based on a position rule, whether a local illumination compensation (LIC) tool is enabled for a conversion between a current block in a video region of a video and a coded representation of the video, and performing the conversion based on the position rule. The position rule specifies that the LIC tool is enabled for blocks on boundaries of the video region and disabled for blocks inside the video region and the LIC tool includes using a linear model of illumination changes in the current block during the conversion.

公开(公告)号：US11653020B2

公开(公告)日：2023-05-16

申请号：US17204448

申请日：2021-03-17

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

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

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/186 ,  H04N19/513 ,  H04N19/56 ,  H04N19/53 ,  G06T7/223 ,  H04N19/139 ,  H04N19/523 ,  H04N19/567

CPC classification number: H04N19/52 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/513 ,  H04N19/53 ,  H04N19/56 ,  H04N19/70 ,  G06T7/223 ,  H04N19/139 ,  H04N19/523 ,  H04N19/567

Abstract: A method for video processing is provided. The method includes determining, based on a coding mode of a parent coding unit of a current coding unit that uses an affine coding mode or a rate-distortion (RD) cost of the affine coding mode, a usage of an adaptive motion vector resolution (AMVR) for a conversion between a coded representation of a current block of a video and the current block; and performing the conversion according to a result of the determining.

公开(公告)号：US11652998B2

公开(公告)日：2023-05-16

申请号：US17701224

申请日：2022-03-22

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

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

IPC: H04N19/82 ,  H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/117

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: An example method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, that one or more samples of the video outside the current block are unavailable for a coding process of the conversion. The coding process comprises an adaptive loop filter (ALF) coding process. The method also includes performing, based on the determining, the conversion by using padded samples for the one or more samples of the video. The padded samples are generated by checking for availability of samples in an order.

公开(公告)号：US11652987B2

公开(公告)日：2023-05-16

申请号：US17580446

申请日：2022-01-20

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

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

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/186

Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes performing a conversion between a video comprising luma blocks and corresponding chroma blocks and a bitstream representation of the video according to a rule that specifies that, for a case that a current luma block is coded using a palette coding mode and a corresponding current chroma block coded with a derived mode, the current luma block is treated as having a default intra prediction mode and the current chroma block is coded with the default intra prediction mode.

公开(公告)号：US11641478B2

公开(公告)日：2023-05-02

申请号：US17675843

申请日：2022-02-18

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

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

IPC: H04N19/33 ,  H04N19/159 ,  H04N19/12 ,  H04N19/124 ,  H04N19/136 ,  H04N19/157 ,  H04N19/167 ,  H04N19/70 ,  H04N19/18 ,  H04N19/30 ,  H04N19/176 ,  H04N19/50 ,  H04N19/61

Abstract: A video processing method includes determining, fora conversion between a video block of a video and a coded representation of the video, factors of a scaling tool based on a coding mode of the video block; and performing the conversion using the scaling tool, wherein the use of the scaling tool comprises: scaling at least some coefficients representing the video block during encoding or descaling at least some coefficients from the coded representation during decoding.

公开(公告)号：US11641477B2

公开(公告)日：2023-05-02

申请号：US17838522

申请日：2022-06-13

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/30 ,  H04N19/174 ,  H04N19/70 ,  H04N19/169

Abstract: A method for video processing is described. The method includes performing a conversion between a video comprising one or more pictures comprising one or more subpictures comprising one or more slices and a bitstream representation of the video according to a rule, and wherein the bitstream representation includes a number of coded units, wherein the rule specifies that a decoding order of coded units within a subpicture is in an increasing order of subpicture level slice index values of the coded units.

公开(公告)号：US11641474B2

公开(公告)日：2023-05-02

申请号：US17246794

申请日：2021-05-03

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

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

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/70 ,  H04N19/159 ,  H04N19/149 ,  H04N19/132 ,  H04N19/30 ,  H04N19/593 ,  H04N19/11 ,  H04N19/50

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, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.

公开(公告)号：US11638038B2

公开(公告)日：2023-04-25

申请号：US17718785

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

Abstract: An example method of video processing includes performing a conversion between a video picture of a video and a bitstream representation of the video. The bitstream representation conforms to a format rule. The format rule specifies that applicability of a Decoder-side Motion Vector Refinement coding tool and a Bi-Directional Optical Flow coding tool for the video picture are indicated separately in the bitstream representation.