公开(公告)号：US11284068B2

公开(公告)日：2022-03-22

申请号：US17199925

申请日：2021-03-12

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

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

IPC: H04N11/02 ,  H04N19/105 ,  H04N19/176 ,  H04N19/503 ,  H04N19/109 ,  H04N19/513 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159

Abstract: Techniques for video processing are described. One example method includes determining an indication that indicates a maximum number of candidates allowed in a candidate list for at least one video block in a video, the maximum number of candidates allowed in the candidate list corresponding to at least one of a maximum number of candidates in a geometry partition mode (GEO) based merge candidate list, a maximum number of base candidates in a merge with motion vector difference (MMVD) merge candidate list, a maximum number of base candidates in a sub-block based MMVD merge candidate list, and a maximum number of candidates in a geometry partition mode based affine merge candidate list; and performing video processing on the at least one video block based on the indication.

公开(公告)号：US11197016B2

公开(公告)日：2021-12-07

申请号：US17212339

申请日：2021-03-25

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

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

IPC: H04N19/513 ,  H04N19/51 ,  H04N19/517 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186

Abstract: A method for video processing is provided to comprise: determining a motion vector precision of one or more motion vectors related to a current video block of a video; selecting, based on the motion vector precision, a motion vector range; and performing, based on the motion vector range, a conversion between the current video block and a bitstream representation of the video.

公开(公告)号：US11184619B2

公开(公告)日：2021-11-23

申请号：US17322166

申请日：2021-05-17

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

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

IPC: H04N19/132 ,  H04N19/30 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: A method for video processing is provided to include: performing a conversion between a current video block of a video that is a chroma block and a coded representation of the video, wherein, during the conversion, the current video block is constructed based on a first domain and a second domain, and wherein the conversion further includes applying a forward reshaping process and/or an inverse reshaping process to one or more chroma components of the current video block.

公开(公告)号：US11140386B2

公开(公告)日：2021-10-05

申请号：US17161106

申请日：2021-01-28

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

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

IPC: H04N19/176 ,  H04N19/189 ,  H04N19/105 ,  H04N19/159 ,  H04N19/52 ,  H04N19/17

Abstract: Devices, systems and methods for digital video coding, which include sub-block based inter prediction methods, are described. An exemplary method for video processing includes determining, for a conversion between a current block of video and a bitstream representation of the video, a maximum number of candidates in a sub-block based merge candidate list and/or whether to add sub-block based temporal motion vector prediction (SbTMVP) candidates to the sub-block based merge candidate list based on whether temporal motion vector prediction (TMVP) is enabled for use during the conversion or whether a current picture referencing (CPR) coding mode is used for the conversion, and performing, based on the determining, the conversion.

公开(公告)号：US11128884B2

公开(公告)日：2021-09-21

申请号：US17154565

申请日：2021-01-21

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

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

IPC: H04N11/02 ,  H04N19/52 ,  H04N19/46 ,  H04N19/109 ,  H04N19/176

Abstract: A method of video processing is provided to include determining, for a conversion between a current video block of a video and a coded representation of the video, a mode of operation of an UMVE mode; and performing the conversion based on the determining, wherein the current video block is coded with a merge mode and motion vector differences in an UMVE mode that comprises a motion vector expression that includes a starting point of motion information, a motion magnitude and a motion direction for the current video block, and wherein one or more fields in the coded representation correspond to the mode of operation, and wherein the one or more fields include: a list size field that indicates a size of a base candidate list used by the UMVE mode, or a table field that signals a distance table or a direction table for the UMVE mode.

公开(公告)号：US11095882B2

公开(公告)日：2021-08-17

申请号：US17071590

申请日：2020-10-15

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

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/117 ,  H04N19/82 ,  H04N19/96 ,  H04N19/46 ,  H04N19/186 ,  H04N19/176

Abstract: Devices, systems and methods for digital video coding, which include pulse code modulation techniques, are described. An exemplary method for video processing includes determining, for a current block of video, that at least one of a first coding mode in which pulse code modulation is used or a second coding mode in which multiple reference line based intra prediction is used is enabled, and performing, based on the first coding mode or the second coding mode, a conversion between the current block and a bitstream representation of the video, wherein a first indication indicative of use of the first coding mode and/or a second indication indicative of use of the second coding mode are included in the bitstream representation according to an ordering rule.

公开(公告)号：US11025915B2

公开(公告)日：2021-06-01

申请号：US16987844

申请日：2020-08-07

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

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

IPC: H04N19/186 ,  H04N19/149 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/30 ,  H04N19/593 ,  H04N19/159 ,  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, parameters of a cross-component linear model using a parameter table whose entries are retrieved according to two chroma sample values and two luma sample values; and performing the conversion based on the determining.

公开(公告)号：US12301799B2

公开(公告)日：2025-05-13

申请号：US17950411

申请日：2022-09-22

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

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463 ,  H04N19/52 ,  H04N19/70 ,  H04N19/80

Abstract: Methods and apparatus for video processing are disclosed. The processing may include video encoding, video decoding, or video transcoding. One example method includes performing a conversion between a video including a picture including one or more slices and a bitstream of the video. The conversion conforms to a rule that specifies that whether a deblocking filter is applied to the one or more slices referring to a picture parameter set is based at least on a first syntax element included in the picture parameter set. The first syntax element indicates whether the deblocking filter is disabled for the picture.

公开(公告)号：US20250126285A1

公开(公告)日：2025-04-17

申请号：US19002259

申请日：2024-12-26

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

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

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176

Abstract: A method for processing a video includes determining, for a first video unit, a set of local illumination compensation (LIC) parameters including a scaling factor and an offset factor; performing or skipping a pre-process on at least one parameter of the set of LIC parameters; and updating at least one history based local illumination compensation parameter table (HLICT) using at least one parameter of the set of LIC parameters, the at least one HLICT being used for a conversion of subsequent video units.

公开(公告)号：US12244819B2

公开(公告)日：2025-03-04

申请号：US17694305

申请日：2022-03-14

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu

IPC: H04N19/70 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/14 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/86

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, whether to enable usage of a chroma quantization parameter (QP) offset for the current block according to a syntax element at a level of a video unit. The video unit includes the current block and a second block of the video. The method also includes performing the conversion based on the determining.