公开(公告)号：US20220394250A1

公开(公告)日：2022-12-08

申请号：US17888227

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: H04N19/117 ,  H04N19/82 ,  H04N19/172 ,  H04N19/70

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

公开(公告)号：US20220385915A1

公开(公告)日：2022-12-01

申请号：US17872571

申请日：2022-07-25

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu

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

Abstract: A method for video processing includes determining that a size of a residual block of a video is larger than a maximum block size allowed for a transform skip mode, in which, during a decoding operation, residual coefficients are decoded without performing an inverse transform operation; splitting, based on the size of a residual block, the residual block into multiple regions, wherein each region represents a portion of the residual block of a difference between a portion of a current video block and a prediction block corresponding to the portion of the current video block; and determining a reconstructed current video block from the residual block based on selectively performing the inverse transform operation according to an indicator that indicates the transform skip mode.

公开(公告)号：US20220385898A1

公开(公告)日：2022-12-01

申请号：US17856631

申请日：2022-07-01

Applicant: Bytedance Inc.

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

IPC: H04N19/117 ,  H04N19/157 ,  H04N19/70 ,  H04N19/136 ,  H04N19/186 ,  H04N19/174 ,  H04N19/172

Abstract: A method of video processing comprises performing a conversion between a video unit of a video and a bitstream of the video according to a rule, wherein the rule specifies that whether a cross-component adaptive loop filter (CC-ALF) mode and an adaptive loop filter (ALF) mode are enabled for coding the video unit are indicated in the bitstream in a mutually independent manner.

公开(公告)号：US20220377353A1

公开(公告)日：2022-11-24

申请号：US17861728

申请日：2022-07-11

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

Inventor： Kai Zhang ,  Zhipin Deng ,  Hongbin Liu ,  Li Zhang ,  Jizheng Xu ,  Ye-kui Wang

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/159 ,  H04N19/132 ,  H04N19/70 ,  H04N19/167 ,  H04N19/169

Abstract: A method of video processing is provided that includes performing a conversion between a block of a video and a bitstream of the video. The bitstream conforms to a formatting rule specifying that a size of a merge estimation region (MER) is indicated in the bitstream and the size of the MER is based on a dimension of a video unit. The MER comprises a region used for deriving a motion candidate for the conversion.

公开(公告)号：US11503344B2

公开(公告)日：2022-11-15

申请号：US17671422

申请日：2022-02-14

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Jizheng Xu ,  Li Zhang ,  Hsiao Chiang Chuang

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

Abstract: Methods, systems, and devices for performing entropy coding for the palette escape symbol in palette mode coding and decoding are described. An example method for video processing includes performing a conversion between a video comprising one or more video regions comprising a current video block and a bitstream representation of the video, wherein the bitstream representation conforms to a format rule that the current video block is coded using a palette mode coding tool, wherein a binarization of an escape symbol for the current video block uses an exponential-Golomb (EG) code of order K, wherein K is a non-negative integer that is unequal to three, and wherein the palette mode coding tool represents the current video block using a palette of representative color values and wherein the escape symbol is used for a sample of the current video block coded without using the representative color values.

公开(公告)号：US11503331B2

公开(公告)日：2022-11-15

申请号：US17331132

申请日：2021-05-26

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

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

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/70 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/159

Abstract: A method for video processing is provided to include performing a conversion between a current video block of a video region of a video and a coded representation of the video, wherein the conversion uses a coding mode in which the current video block is constructed based on a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner, and wherein a parameter set in the coded representation comprises parameter information for the coding mode.

公开(公告)号：US11503288B2

公开(公告)日：2022-11-15

申请号：US17568471

申请日：2022-01-04

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

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

IPC: H04N19/587 ,  H04N19/59 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/523 ,  H04N19/80

Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a current picture of a video and a coded representation of the video, an applicability of an alternative interpolation filter, wherein the applicability of the alternative interpolation filter indicates whether to apply the alternative interpolation filter in the conversion; and performing the conversion based on the determining; wherein the applicability of the alternative interpolation filter is determined based on whether a reference picture resampling in which a reference picture of the current picture is resampled to perform the conversion is used.

公开(公告)号：US11496767B2

公开(公告)日：2022-11-08

申请号：US17479338

申请日：2021-09-20

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：US11496736B2

公开(公告)日：2022-11-08

申请号：US17589537

申请日：2022-01-31

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

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

IPC: H04N19/11 ,  H04N19/174 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96 ,  H04N19/105 ,  H04N19/107 ,  H04N19/136 ,  H04N19/169 ,  H04N19/503 ,  H04N19/593 ,  H04N19/70

Abstract: A method of video processing is provided to include: performing a conversion between a video comprising a video region having one or more luma blocks and one or more chroma blocks and a coded representation of the video according to a rule, wherein the rule specifies that use of an intra block copy (IBC) mode is available for the one or more luma blocks and the one or more chroma blocks having a block size M×N, for all values of M and N, where M and N are integers; wherein, using the IBC mode, a video block is coded using at least a block vector pointing to a video frame containing the video block.

公开(公告)号：US11483552B2

公开(公告)日：2022-10-25

申请号：US17484509

申请日：2021-09-24

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

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

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/80 ,  H04N19/52 ,  H04N19/523 ,  H04N19/517

Abstract: A method of video processing is provided to include: performing a conversion between a current video block of a video and a coded representation of the video, wherein the coded representation includes a first parameter that indicates a motion information precision from a multiple precision set for the current video block that does not use a default motion information precision and/or a second parameter which identifies whether an alternative half-pel interpolation filter is used for the conversion, and wherein each of the first parameter and/or the second parameter is associated with one or more bins and a context-model based coding is only used for a first bin of the one or more bins in the coded representation.