公开(公告)号：US11765398B2

公开(公告)日：2023-09-19

申请号：US17128965

申请日：2020-12-21

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

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

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/513 ,  H04N19/186

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/513

Abstract: Devices, systems and methods for picture border coding are described. In a representative aspect, a method for processing picture includes segmenting a picture into one or multiple picture segments, determining that a first block of a picture segment covers at least one region that is outside a border of the picture segment, wherein a size of the first block is M×N pixels, selecting a second block of size K×L pixels, where (K≤M and L

公开(公告)号：US11722703B2

公开(公告)日：2023-08-08

申请号：US17129029

申请日：2020-12-21

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

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

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/513 ,  H04N19/186

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/513

Abstract: In a representative aspect, a method for processing pictures includes segmenting a picture into one or multiple picture segments, determining that a first block of a picture segment covers at least one region that is outside a border of the picture segment, wherein a size of the first block is M×N pixels, selecting a second block of size K×L pixels and where (K≤M and L

公开(公告)号：US20230217021A1

公开(公告)日：2023-07-06

申请号：US18171049

申请日：2023-02-17

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

Inventor： Hongbin Liu ,  Li Zhang ,  Kai Zhang ,  Hsiao Chiang Chuang ,  Zhipin Deng

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/117 ,  H04N19/82 ,  H04N19/176 ,  H04N19/70

Abstract: Devices, systems and methods for adaptive loop filtering are described. In an exemplary aspect, a method for video processing includes performing, for a current video block of a video, a filtering process that uses filter coefficients and comprises two or more operations with at least one intermediate result, applying a clipping operation to the at least one intermediate result, and performing, based on the at least one intermediate result, a conversion between the current video block and a bitstream representation of the video, wherein the at least one intermediate result is based on a weighted sum of the filter coefficients and differences between a current sample of the current video block and neighboring samples of the current sample.

公开(公告)号：US11528497B2

公开(公告)日：2022-12-13

申请号：US17671486

申请日：2022-02-14

Applicant: Bytedance Inc.

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

IPC: H04N19/00 ,  H04N19/50 ,  H04N19/119 ,  H04N19/124 ,  H04N19/132 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/169 ,  H04N19/70

Abstract: Methods, systems, and devices for using palette mode with different partition structures are described. An example method for video processing includes maintaining, for a conversion between a video comprising one or more video regions comprising a current video block and a bitstream representation of the video, a palette prediction table for a prediction of a palette used in a palette mode coding tool used for the current video block, making a determination that a local dual tree coding is applied to the conversion, modifying, based on the determination, the palette prediction table, and performing, based on the palette prediction table subsequent to the modifying, the conversion, wherein the palette mode coding tool represents the current video block using a palette of representative color values, and wherein the local dual tree coding enables partitioning of chroma blocks independently from corresponding luma blocks based on a block size.

公开(公告)号：US20220385916A1

公开(公告)日：2022-12-01

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 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/11 ,  H04N19/124 ,  H04N19/182 ,  H04N19/593

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：US11438635B2

公开(公告)日：2022-09-06

申请号：US17110052

申请日：2020-12-02

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

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

IPC: H04N11/02 ,  H04N19/96 ,  H04N19/176 ,  H04N19/184 ,  H04N19/119 ,  H04N19/189 ,  H04N19/169 ,  H04N19/46

Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques are described. An exemplary method for visual media decoding includes applying, to a current visual media block, a partitioning process that splits the current visual media block into more than four sub-blocks; decoding, based on a bitstream representation, the more than four sub-blocks; and decoding, based on the more than four sub-blocks and the partitioning process, the current visual media block. Another exemplary method for visual media encoding includes receiving input data associated with a current visual media block; applying, to the input data, a partitioning process that splits the current visual media block into more than four sub-blocks; encoding, based on the partitioning process, the more than four sub-blocks; and generating, based on the encoding, a bitstream representation of the current visual media block.

公开(公告)号：US11381848B2

公开(公告)日：2022-07-05

申请号：US17090276

申请日：2020-11-05

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

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

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/189 ,  H04N19/169 ,  H04N19/46

Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques are described. An exemplary method for visual media decoding includes applying, to a current visual media block, a partitioning process that splits the current visual media block into exactly four sub-blocks including at least one sub-block that has a size different from half of a width of the current visual media block times half of a height of the current visual media block, decoding, based on a bitstream representation, the four sub-blocks, and decoding, based on the four sub-blocks and the partitioning process, the current visual media block.