公开(公告)号：US11985329B2

公开(公告)日：2024-05-14

申请号：US17694008

申请日：2022-03-14

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu

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

CPC classification number: H04N19/14 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/70 ,  H04N19/86

Abstract: An example method of video processing includes performing a conversion between a block of a chroma component of a video and a bitstream representation of the video. During the conversion, a deblocking filter process is applied to at least some samples along an edge of the block, and wherein chroma quantization parameter (QP) offsets are added to outputs from a chroma QP table to determine parameters for the deblocking filter process.

公开(公告)号：US11985323B2

公开(公告)日：2024-05-14

申请号：US17881197

申请日：2022-08-04

Applicant: Bytedance, Inc.

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

IPC: H04N19/132 ,  H04N19/11 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70 ,  H04N19/105 ,  H04N19/59

CPC classification number: H04N19/132 ,  H04N19/11 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70 ,  H04N19/105 ,  H04N19/59

Abstract: Video coding and decoding methods are described. An example method includes determining, based on an applicability rule, that a differential coding mode is applicable to a conversion between a chroma video block of a video and a bitstream representation of the chroma video block, and performing, based on the determining, the conversion between the chroma video block and the bitstream representation of the chroma video block using the differential coding mode, where the chroma video block is represented in the bitstream representation using a difference between a quantized residual of an intra prediction of the chroma video block and a prediction of the quantized residual in the differential coding mode, where the intra prediction is performed in a first direction and the prediction of the quantized residual is performed in a second direction, and where the difference is represented using a differential pulse coding modulation (DPCM) representation.

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.

公开(公告)号：US20240137493A1

公开(公告)日：2024-04-25

申请号：US18528032

申请日：2023-12-04

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/188

Abstract: Methods and apparatus for processing of video are described. The processing may include video encoding, decoding, or transcoding. One example video processing method includes performing a conversion between a video including one or more pictures including one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule that specifies that a subpicture cannot be a random access type of subpicture in response to the subpicture not being a leading subpicture of an intra random access point subpicture. The leading subpicture precedes the intra random access point subpicture in output order.

公开(公告)号：US11968402B2

公开(公告)日：2024-04-23

申请号：US17898051

申请日：2022-08-29

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

Inventor： Zhipin Deng ,  Ye-kui Wang ,  Li Zhang ,  Kai Zhang ,  Kui Fan

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/186 ,  H04N19/196 ,  H04N19/30 ,  H04N19/61

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/172 ,  H04N19/174 ,  H04N19/186 ,  H04N19/188 ,  H04N19/196 ,  H04N19/30 ,  H04N19/61

Abstract: Methods, systems, apparatus for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies whether a syntax element in a sequence parameter set (SPS) based on a value of a general constraint flag.

公开(公告)号：US11968361B2

公开(公告)日：2024-04-23

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.