公开(公告)号：US20250071320A1

公开(公告)日：2025-02-27

申请号：US18946865

申请日：2024-11-13

Applicant: Electronics and Telecommunications Research Institute ,  Industry-University Cooperation Foundation Korea Aerospace University

Inventor： Sung Chang LIM ,  Hui Yong KIM ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM ,  Jae Gon KIM ,  Sang Yong LEE ,  Un Ki PARK

IPC: H04N19/56 ,  H04N19/105 ,  H04N19/13 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70

Abstract: Disclosed are a method for inducing a prediction motion vector and an apparatus using the same. An image decoding method can include: a step of determining the information related to a plurality of spatial candidate prediction motion vectors from peripheral predicted blocks of a predicted target block; and a step of determining the information related to temporal candidate prediction motion vectors on the basis of the information related to the plurality of spatial candidate prediction motion vectors. Accordingly, the present invention can reduce complexity and can enhance coding efficiency when inducing the optimum prediction motion vector.

公开(公告)号：US20250071318A1

公开(公告)日：2025-02-27

申请号：US18726205

申请日：2023-01-04

Applicant: LG Electronics Inc.

Inventor： Hyeongmoon JANG ,  Naeri PARK ,  Junghak NAM

IPC: H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184

Abstract: An image decoding/encoding method and device according to the present disclosure may configure a merge candidate list of a current block, derive motion information of the current block on the basis of the merge candidate list and a merge index, and perform inter prediction for the current block on the basis of the motion information of the current block. Here, the merge candidate list may include a candidate derived using an affine motion model of an affine block coded by affine prediction.

公开(公告)号：US12238335B2

公开(公告)日：2025-02-25

申请号：US18302625

申请日：2023-04-18

Applicant: NVIDIA Corporation

Inventor： Yongmao Tang ,  Jianjun Chen ,  Junan Chen ,  Yonghai Wu ,  Zejun Hu ,  Wei Feng

IPC: H04N19/139 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/156 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/423 ,  H04N19/61

Abstract: Disclosed are systems and techniques for efficient real-time codec encoding of video files. In one embodiment, the techniques include obtaining a first plurality of motion vectors of a first resolution, generating a second plurality of motion vectors of a second resolution, and calculating a first cost of the motion vector using a first cost function of a first size. The techniques include selecting a subset of motion vectors of the second plurality of motion vectors, calculating a second cost using a second cost function of a second size, and generating a plurality of combined motion vectors based on the subset of motion vectors. The techniques include calculating a third cost using the second cost function of the second size, selecting a final motion vector, and generating, based on the selected final motion vector, a block of predicted pixels that approximates a block of source pixels of an image frame.

公开(公告)号：US20250063192A1

公开(公告)日：2025-02-20

申请号：US18913903

申请日：2024-10-11

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

Inventor： Na ZHANG ,  Jizheng XU ,  Kai ZHANG ,  Mehdi SALEHIFAR ,  Li ZHANG

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/196 ,  H04N19/58

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current video block of a video and a bitstream of the video, that a first prediction mode is applied to the current block, reordering, in the first prediction mode, at least a first set of block vector difference (BVD) candidates of multiple BVD candidates corresponding to a first base candidate according to at least one criterion; deriving, based on the reordered BVD candidates, a block vector for the current video block; and performing the conversion based on the motion information.

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：US20250056037A1

公开(公告)日：2025-02-13

申请号：US18926953

申请日：2024-10-25

Applicant: GOLDENWAVEPARTNERS CO., LTD.

Inventor： Donggyu SIM ,  Seanae PARK

IPC: H04N19/513 ,  H04N19/139 ,  H04N19/44 ,  H04N19/46

Abstract: The present invention relates to an image encoding and decoding technique for a high-definition video compression method and device for an omnidirectional security camera, and more specifically, to a method and a device whereby a differential motion vector is effectively transmitted, and an actual motion vector is calculated using the transmitted differential motion vector, and thus motion compensation is performed.

公开(公告)号：US20250047868A1

公开(公告)日：2025-02-06

申请号：US18918304

申请日：2024-10-17

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176

Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method of the present invention may comprise: obtaining intra-frame prediction information of a current block from a bitstream; inducing an intra-frame prediction mode of the current block on the basis of the intra-frame prediction information; determining a reference region for intra-frame prediction of the current block; and performing intra-frame prediction of the current block on the basis of the intra-frame prediction mode and the reference region.

公开(公告)号：US12219155B2

公开(公告)日：2025-02-04

申请号：US18591350

申请日：2024-02-29

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma ,  Ryuichi Kanoh ,  Chong Soon Lim ,  Ru Ling Liao ,  Hai Wei Sun ,  Sughosh Pavan Shashidhar ,  Han Boon Teo ,  Jing Ya Li

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/139 ,  H04N19/513

Abstract: An encoder encodes a video, and includes: circuitry; and memory coupled to the circuitry. Using the memory, the circuitry: obtains at least two items of prediction information for a first partition included in the video; derives at least one template from neighboring samples which neighbor the first partition; calculates at least two costs, using the at least one template and the at least two items of prediction information; using the at least two costs, (i) determines at least one splitting direction for the first partition or (ii) assigns one of the at least two items of prediction information to a second partition split from the first partition according to the splitting direction, and another thereof to a third partition split from the first partition according to the splitting direction; and encodes the first partition according to the splitting direction and the at least two items of prediction information.

公开(公告)号：US20250039365A1

公开(公告)日：2025-01-30

申请号：US18917993

申请日：2024-10-16

Applicant: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.

Inventor： Wei CHEN ,  Xiaoyu XIU ,  Yi-Wen CHEN ,  Hong-Jheng JHU ,  Che-Wei KUO ,  Ning YAN ,  Xianglin WANG ,  Bing YU

IPC: H04N19/105 ,  H04N19/129 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/50

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a restricted area that is not adjacent to a current coding unit (CU) according to a value associated with the restricted area. Additionally, the decoder obtains one or more motion vector (MV) candidates from a plurality of non-adjacent CUs to the current CU based on the restricted area. Furthermore, the decoder obtains one or more control point motion vectors (CPMVs) for the current CU based on the one or more MV candidates.

公开(公告)号：US20250024070A1

公开(公告)日：2025-01-16

申请号：US18241763

申请日：2023-09-01

Applicant: Tencent America LLC

Inventor： Han GAO ,  Xin Zhao ,  Liang Zhao ,  Jing Ye ,  Shan Liu

IPC: H04N19/563 ,  H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/52 ,  H04N19/55

Abstract: A computing system receives a video bitstream that comprises a current block within a current picture and one or more syntax elements. The current block is encoded in a subblock-based motion vector (MV) refinement mode using information from a first reference block and a second reference block. The system applies a MV refinement to generate a refined first MV indicating a first location of the first reference block and a refined second MV indicating a second location of the second reference block. Subsequent to applying the MV refinement, in accordance with a determination that (i) the first location is outside of a first set of reference boundaries and/or (ii) the second location is outside of a second set of reference boundaries, the system decodes the current block using a weighted average of respective values from the first and second locations.