公开(公告)号：US20250071313A1

公开(公告)日：2025-02-27

申请号：US18940677

申请日：2024-11-07

Applicant: KT CORPORATION

Inventor： Bae Keun LEE

IPC: H04N19/51 ,  H04N19/105 ,  H04N19/107 ,  H04N19/119 ,  H04N19/176 ,  H04N19/50 ,  H04N19/70 ,  H04N19/91

Abstract: A method for decoding a video according to the present invention may comprise: decoding information indicating whether illumination compensation is performed for a current block, determining an illumination compensation parameter of the current block when the information indicates that the illumination compensation is performed for the current block, obtaining a prediction block by performing inter prediction for the current block, and performing the illumination compensation on the current block using the illumination compensation parameter.

公开(公告)号：US20250071298A1

公开(公告)日：2025-02-27

申请号：US18725104

申请日：2022-12-27

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Kazushi SATO ,  Yue YU ,  Haoping YU

IPC: H04N19/184 ,  H04N19/117 ,  H04N19/119 ,  H04N19/124 ,  H04N19/176 ,  H04N19/30 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: A method includes: obtaining a multilayer bit stream of a video data block; decoding the multilayer bit stream of the video data block, the multilayer bit stream comprising at least part of the video data block that has been encoded, wherein the multilayer bit stream includes one or more layers and one or more temporal sublayers; and decoding, from the multilayer bit stream, one or more first coding parameters, wherein the one or more first coding parameters are independently associated with a first layer of the one or more layers.

公开(公告)号：US12238341B2

公开(公告)日：2025-02-25

申请号：US18430805

申请日：2024-02-02

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Wei Zhang ,  Junyan Huo ,  Yanzhuo Ma

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/174 ,  H04N19/30 ,  H04N19/60 ,  H04N19/96

Abstract: A point cloud encoding and decoding method, an encoder, and a decoder are provided. The encoder determines a processing order of point cloud data during point cloud encoding. The encoder determines a coordinate-axis-order index corresponding to the processing order. The encoder encodes the coordinate-axis-order index and signals encoded bits into a bitstream. The encoder processes the point cloud data according to the processing order, to obtain point cloud data to-be-encoded. The encoder encodes the point cloud data to-be-encoded and signals encoded bits into the bitstream. The decoder parses a bitstream to obtain a coordinate-axis-order index, determines a processing order of point cloud data during point cloud decoding according to the coordinate-axis-order index, parses the bitstream to obtain recovered data of the point cloud data, and determines a position of coordinate data of the point cloud data in a storage unit of the recovered data according to the processing order.

公开(公告)号：US12238306B2

公开(公告)日：2025-02-25

申请号：US18528017

申请日：2023-12-04

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

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

IPC: H04N19/52 ,  H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/55

Abstract: Devices, systems and methods for sub-block based prediction are described. In a representative aspect, a method for video encoding includes partitioning, based on a first rule, a luma component of a block of video data into a first set of sub-blocks. The method also includes partitioning, based on a second rule, a first chroma component of the block of video data into a second set of sub-blocks. The first and the second set of sub-blocks include different numbers of sub-blocks. The method also includes performing a subsequent motion prediction based on the first and the second set of sub-blocks.

公开(公告)号：US12238285B2

公开(公告)日：2025-02-25

申请号：US18492596

申请日：2023-10-23

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Ha Hyun Lee ,  Jung Won Kang ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim ,  Hae Chul Choi ,  Dae Hyeok Gwon

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/169 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise identifying a region by partitioning an image, and determining a prediction mode of the region on the basis of at least one of a size of the region, a partition shape, and a coding parameter of the region. The determined prediction mode of the region may be determined as a prediction mode of all coding blocks included in the region.

公开(公告)号：US20250063212A1

公开(公告)日：2025-02-20

申请号：US18935012

申请日：2024-11-01

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Junghak NAM ,  Seunghwan KIM ,  Jaehyun LIM ,  Hyeongmoon JANG

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/176 ,  H04N19/70

Abstract: Disclosed are a method for decoding a video signal and an apparatus therefor. Specifically, a method for decoding an image may include: partitioning a current coding tree block into a plurality of coding blocks so that coding blocks partitioned from the current coding tree block are included in a current picture when the current coding tree block is out of a boundary of the current picture; parsing a first syntax element indicating whether a current coding block is partitioned into a plurality of subblocks when the current coding block satisfies a predetermined condition; and determining a split mode of the current coding block based on the syntax element.

公开(公告)号：US20250063191A1

公开(公告)日：2025-02-20

申请号：US18933995

申请日：2024-10-31

Applicant: Tencent America LLC

Inventor： Lien-Fei CHEN ,  Guichun LI ,  Xiang LI ,  Shan LIU

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/573 ,  H04N19/70

Abstract: In a method of video encoding, a corresponding block of a current block in a current picture is determined based on an offset vector that indicates an offset between the current block and the corresponding block. The current block includes a plurality of subblocks to be encoded in a subblock-based frame-rate up conversion (FRUC) mode. A temporal motion vector predictor (TMVP) of a first subblock in the corresponding block is determined based on a subblock in a forward reference picture of the current picture and a subblock in a backward reference picture of the current picture. The subblocks in the forward reference picture and the backward reference picture are matched using the subblock-based FRUC mode. Based on the TMVP, a TMVP of a subblock is determined in the plurality of subblocks in the current block.

公开(公告)号：US20250063186A1

公开(公告)日：2025-02-20

申请号：US18819109

申请日：2024-08-29

Applicant: LG ELECTRONICS INC.

Inventor： Seunghwan KIM ,  Mehdi SALEHIFAR ,  Moonmo KOO ,  Jaehyun LIM

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/625

Abstract: Provided is a method for decoding a video signal based on a reduced transform, which includes: checking whether a transform skip is applied to a current block; obtaining a transform index indicating a transform kernel of the current block from the video signal when the transform skip is not applied to the current block; determining a region where a primary transform is applied to the current block based on the transform kernel indicated by the transform index and a size of the current block; and performing an inverse primary transform on the region to which the primary transform is applied by using the transform kernel indicated by the transform index.

公开(公告)号：US20250063169A1

公开(公告)日：2025-02-20

申请号：US18935302

申请日：2024-11-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Christopher James ROSEWARNE ,  Andrew James DORRELL

IPC: H04N19/119 ,  H04N19/169 ,  H04N19/46 ,  H04N19/96

Abstract: A system and method of decoding a coding unit in an image frame from a bitstream. The method comprises determining a size of the coding unit from the bitstream; and dividing the image frame into a plurality of equally sized processing regions, each of the equally sized processing regions being a block processed during a single stage of a pipeline decoding the bitstream. If the coding unit overlaps a boundary between the determined processing regions, the method comprises selecting a transform size for the coding unit from a plurality of transform sizes, the transform size being selected to fit within the coding unit and being different in size to the processing regions; and decoding the coding unit by applying an inverse transform to residual coefficients of each transform unit in the coding unit, each of the transform units being of the selected transform size.

公开(公告)号：US20250063163A1

公开(公告)日：2025-02-20

申请号：US18817928

申请日：2024-08-28

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Kenneth ANDERSSON ,  Rickard SJÖBERG ,  Jacob STRÖM ,  Zhi ZHANG

IPC: H04N19/117 ,  G06T9/00 ,  H04N19/119 ,  H04N19/12 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/189 ,  H04N19/61 ,  H04N19/635 ,  H04N19/86

Abstract: Methods and apparatuses for applying a deblocking to a coding unit in video pictures a provided. In one aspect, the deblocking is applied to sub-block boundaries in the coding unit and to implicit transform unit boundaries in the coding unit.