公开(公告)号：US20210051348A1

公开(公告)日：2021-02-18

申请号：US17090364

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

Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques, and in particular, depth calculations for extended quadtree partitioning, 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.

公开(公告)号：US20220014782A1

公开(公告)日：2022-01-13

申请号：US17486312

申请日：2021-09-27

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

Inventor： Jaehong CHON ,  Hsiao Chiang CHUANG ,  Li ZHANG ,  Yue WANG

IPC: H04N19/52 ,  H04N19/543 ,  H04N19/105 ,  H04N19/436 ,  H04N19/70 ,  H04N19/174 ,  H04N19/426

Abstract: History based motion vector prediction is disclosed. In one example method of video processing, initializing, for a conversion between a first region of video and a bitstream of the first region, a first history motion vector predictor (HMVP) table associated with the first region based on at least one of stored multiple HMVP tables, the multiple HMVP tables being used to store motion information associated with regions coded prior the first region; and performing the conversion by using the initialized first HMVP table which includes at least one motion candidate.

公开(公告)号：US20210385442A1

公开(公告)日：2021-12-09

申请号：US17411333

申请日：2021-08-25

Applicant: Bytedance Inc.

Inventor： Weijia ZHU ,  Li ZHANG ,  Jizheng XU ,  Hsiao Chiang CHUANG

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70 ,  H04N19/124

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

公开(公告)号：US20210112248A1

公开(公告)日：2021-04-15

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: H04N19/119 ,  H04N19/96 ,  H04N19/186 ,  H04N19/176

Abstract: Devices, systems and methods for picture border coding are described. 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：US20210051349A1

公开(公告)日：2021-02-18

申请号：US17090414

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 ,  H04N19/176 ,  H04N19/184

Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques and in particular, restricting extended quadtree (EQT) partitioning, are described. An exemplary method for visual media decoding includes making a decision, based on one or more conditions, regarding a selective inclusion of one or more signaling bits for a partitioning process in a bitstream representation of a current visual media block of a plurality of visual media blocks, where the partitioning process 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 the bitstream representation, the four sub-blocks; and decoding, based on the four sub-blocks and the partitioning process, the current visual media block.