公开(公告)号：US12126805B2

公开(公告)日：2024-10-22

申请号：US17891800

申请日：2022-08-19

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

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

IPC: H04N19/103 ,  H04N19/119 ,  H04N19/129 ,  H04N19/157 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70

CPC classification number: H04N19/129 ,  H04N19/103 ,  H04N19/119 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/1883 ,  H04N19/70

Abstract: Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video picture that includes one or more tiles and one or more rectangular slices and a bitstream of the video according to a rule. The rule specifies that, for iteratively determining information about the one or more rectangular slices, a variable indicating a tile index is updated only for slices having indices that are smaller than a value equal to a number of slices in the video picture minus 1.

公开(公告)号：US20240333917A1

公开(公告)日：2024-10-03

申请号：US18741032

申请日：2024-06-12

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

Inventor： Kai Zhang ,  Li Zhang ,  Hongbin Liu ,  Hsiao Chiang Chuang ,  Yue Wang

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/96

Abstract: Devices, systems and methods for using zero-units in video and image coding are described. In a representative aspect, a method for processing video, including: determining, for a conversion between a block of the video and a bitstream of the video, that the block is a zero-unit (ZU) block based on one or more dimensions of the block being a non-power-of-two number, wherein no transform and inverse-transform operations are performed on the block; and performing the conversion based on the determination.

公开(公告)号：US12108072B2

公开(公告)日：2024-10-01

申请号：US17386346

申请日：2021-07-27

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

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

IPC: H04N19/513 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N19/176

Abstract: A method for video processing is provided. The method includes making a determination, for a conversion between a current video block of a video and a coded representation of the current video block, whether to use a symmetric motion vector difference (SMVD) mode based on a currently selected best mode for the conversion; and performing the conversion based on the determining.

公开(公告)号：US20240323380A1

公开(公告)日：2024-09-26

申请号：US18676224

申请日：2024-05-28

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

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

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

CPC classification number: H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

Abstract: The application relates to refined quantization steps in video coding. A method for video processing includes determining, during a conversion between a current video block and a bitstream representation of a video including the current video block, two-level quantization parameters including a first level quantization parameter QP1 and a second level quantization parameter QP2 for the current video block. The method further includes performing, at least based on the two-level quantization parameters, a first level quantization and/or a second level quantization during the conversion. The two-level quantization parameters correspond to different quantization precisions, respectively.

公开(公告)号：US12075038B2

公开(公告)日：2024-08-27

申请号：US17977582

申请日：2022-10-31

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

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

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

CPC classification number: 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：US12075030B2

公开(公告)日：2024-08-27

申请号：US18081404

申请日：2022-12-14

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

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

IPC: H04N19/105 ,  H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/157 ,  H04N19/167 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/157 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/30 ,  H04N19/70

Abstract: A method of video processing includes performing a conversion between a video unit of a video and a coded representation of the video using at least a video picture. Only one of a subpicture coding mode or a resolution-changing coding mode is enabled for the video unit. The subpicture coding mode is a mode in which the video picture is divided into multiple subpictures, and the resolution-changing coding mode is a mode in which a resolution of the video picture is adjusted during the conversion.

公开(公告)号：US20240276020A1

公开(公告)日：2024-08-15

申请号：US18624889

申请日：2024-04-02

Applicant: Lemon Inc. ,  Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc. ,  Bytedance (HK) Limited

Inventor： Yue Li ,  Li Zhang ,  Kai Zhang ,  Junru Li ,  Meng Wang ,  Siwei Ma ,  Shiqi Wang

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/70

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/70

Abstract: A method implemented by a video coding apparatus includes applying a neural network (NN) filter to an unfiltered sample of a video unit to generate a filtered sample. The NN filter is applied based on a syntax element of the video unit. The method also includes converting between a video media file and a bitstream based on the filtered sample that was generated.

公开(公告)号：US12063362B2

公开(公告)日：2024-08-13

申请号：US17748687

申请日：2022-05-19

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

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

IPC: H04N19/117 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/31 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/31 ,  H04N19/70 ,  H04N19/82

Abstract: Devices, systems and methods for digital video coding, which includes in-loop reshaping for video coding, are described. An exemplary method for video processing includes performing a conversion between a video comprising one or more video data units and a bitstream representation of the video, the bitstream representation conforming to a format rule that specifies an inclusion of side information indicative of default parameters for a coding mode that is applicable to a video block of the one or more video data units for which the coding mode is enabled, and the side information providing parameters for constructing the video block based on a representation of the video block in an original domain and a reshaped domain and/or a luma-dependent scaling of a chroma residue of a chroma video block.

公开(公告)号：US12063348B2

公开(公告)日：2024-08-13

申请号：US17691910

申请日：2022-03-10

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

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

IPC: H04N19/132 ,  H04N19/103 ,  H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/50

CPC classification number: H04N19/103 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/50

Abstract: A method of video processing is described. The method includes: deriving, for a conversion between a current block of a video and a coded representation of the video, a prediction block for the current block that is determined according to a tool in which weights are used to determine a weighted sum of two initial prediction blocks used to determine the prediction block; and performing the conversion using the prediction block; wherein the deriving includes: applying the weights to two intermediate prediction samples that respectively belong to the two initial prediction blocks to derive a final prediction sample; and performing a right shift operation for the final prediction sample, wherein the right shift operation is pbSample>> (shift1+3)), wherein pbSample represents the final prediction sample, shift1 is set equal to Max(2, 14−bitDepth); and determining the prediction block based on the final prediction sample.

公开(公告)号：US20240251108A1

公开(公告)日：2024-07-25

申请号：US18622378

申请日：2024-03-29

Applicant: Bytedance Inc.

Inventor： Yue LI ,  Kai Zhang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/176

CPC classification number: H04N19/70 ,  H04N19/176 ,  H04N19/1883

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining a first granularity of selection of a machine learning model for processing a video and a second granularity of applying the machine learning model; and performing, based on the first and second granularities, a conversion between a current video block of the video and a bitstream of the video.