公开(公告)号：US12003766B2

公开(公告)日：2024-06-04

申请号：US17942552

申请日：2022-09-12

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

CPC classification number: 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：US12003711B2

公开(公告)日：2024-06-04

申请号：US17523131

申请日：2021-11-10

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

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

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82

Abstract: In an exemplary aspect, a method for visual media processing includes identifying a boundary at a vertical edge and/or a horizontal edge of two video blocks; calculating a boundary strength of a filter based on at least one of the two video blocks crossing a vertical edge or a horizontal edge is coded using a combined intra-inter prediction (CIIP) mode; deciding whether to turn on or off the filter; selecting a strength of the filter in case the filter is turned on; and performing, based on the selecting, a deblocking filter (DB) process to the video blocks.

公开(公告)号：US20240179308A1

公开(公告)日：2024-05-30

申请号：US18430882

申请日：2024-02-02

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

Inventor： Wenbin Yin ,  Kai Zhang ,  Li Zhang

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/157 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/157 ,  H04N19/70 ,  H04N19/82

Abstract: A method of processing media data. The method includes filtering a sample of a video unit using one or more virtual filters of a fusion mode to produce a filtering result; and performing a conversion between a video including the video unit and a bitstream of the video based on the sample as filtered. A corresponding video coding apparatus and non-transitory computer-readable recording medium are also disclosed.

公开(公告)号：US20240171753A1

公开(公告)日：2024-05-23

申请号：US18513134

申请日：2023-11-17

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

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

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/577 ,  H04N19/96

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/577 ,  H04N19/96

Abstract: Techniques for implementing video processing techniques are described. In one example implementation, a method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether a combined inter and intra prediction (CIIP) coding technique is to be applied to the current block based on a characteristic of the current block. The CIIP coding technique uses an intermedia inter prediction value and an intermedia intra prediction value to derive a final prediction value of the current block. The method also includes performing the conversion based on the determining.

公开(公告)号：US11985340B2

公开(公告)日：2024-05-14

申请号：US17319909

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: H04N19/423 ,  H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/30 ,  H04N19/513 ,  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: History-based affine parameters inheritance 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 an affine model to be used by the current block based on affine related information associated with an affine model used by a first block stored in a buffer, wherein the first block is affine coded prior to the current block; and performing the conversion by using the derived affine related information.

公开(公告)号：US11985317B2

公开(公告)日：2024-05-14

申请号：US18154333

申请日：2023-01-13

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

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

IPC: H04N19/122 ,  H04N19/103 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/30 ,  H04N19/46 ,  H04N19/60 ,  H04N19/124

CPC classification number: H04N19/122 ,  H04N19/103 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/30 ,  H04N19/46 ,  H04N19/60 ,  H04N19/124

Abstract: Methods, systems, and devices for coefficient scaling for high-precision image and video coding are described. An example method of video processing includes performing a conversion between a current block of a video and a bitstream representation of the video according to a rule. The rule specifies that the conversion includes during encoding, skipping applying a forward transform to residual coefficients of the current block prior to including in the bitstream representation, or during decoding, reconstructing residual coefficients of the current block from the bitstream representation without applying an inverse transform. The rule further specifies that a scale factor is applied to the residual coefficients independent of a size of the current block.

公开(公告)号：US11979567B2

公开(公告)日：2024-05-07

申请号：US17982038

申请日：2022-11-07

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

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

IPC: H04N19/00 ,  H04N19/117 ,  H04N19/186 ,  H04N19/96

CPC classification number: H04N19/117 ,  H04N19/186 ,  H04N19/96

Abstract: A method for video processing is described. The method includes determining, for a conversion between a video unit of a video and a bitstream representation of the video, whether to enable a mirrored padding process for padding an unavailable luma sample during an application of a loop filtering tool to the video unit; and performing the conversion based on the determining.

公开(公告)号：US11973931B2

公开(公告)日：2024-04-30

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：US20240137574A1

公开(公告)日：2024-04-25

申请号：US18395526

申请日：2023-12-23

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

Inventor： Wenbin Yin ,  Kai Zhang ,  Li Zhang

IPC: H04N19/80 ,  H04N19/177

CPC classification number: H04N19/80 ,  H04N19/177

Abstract: A mechanism for processing video data is disclosed. The mechanism determines to classify picture data into groups based on statistical information related to the picture data and apply a bilateral filter to filter samples in each of the groups. A conversion is performed between a visual media data and a bitstream based on the bilateral filter.

公开(公告)号：US20240137517A1

公开(公告)日：2024-04-25

申请号：US18397302

申请日：2023-12-27

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

Inventor： Chaoyi Lin ,  Yue Li ,  Kai Zhang ,  Zhaobin Zhang ,  Li Zhang

IPC: H04N19/132 ,  G06T3/4046 ,  G06T3/4053 ,  H04N19/33 ,  H04N19/59 ,  H04N19/88

CPC classification number: H04N19/132 ,  G06T3/4046 ,  G06T3/4053 ,  H04N19/33 ,  H04N19/59 ,  H04N19/88

Abstract: A method of processing video data. The method includes applying a super resolution (SR) process to a video unit at a specific position relative to one or more in-loop filters when the one or more in-loop filters are applied to the video unit, and performing a conversion between a video comprising the video unit and a bitstream of the video based on the SR process and the one or more in-loop filters as applied. A corresponding video coding apparatus and non-transitory computer-readable recording medium are also disclosed.