公开(公告)号：US20250063158A1

公开(公告)日：2025-02-20

申请号：US18937846

申请日：2024-11-05

Applicant: Velos Media, LLC

Inventor： Sachin G. DESHPANDE ,  Christopher A. SEGALL

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/70

Abstract: A system for decoding a video bitstream includes receiving a reference picture set associated with a frame including a set of reference picture identifiers. The reference picture set identifies one or more reference pictures to be used for inter-prediction of the frame based upon its associated least significant bits of a picture order count based upon the reference picture identifiers. The one or more reference pictures is a second or greater previous frame to the frame having the matching reference picture identifier.

公开(公告)号：US20250061717A1

公开(公告)日：2025-02-20

申请号：US18502002

申请日：2023-11-04

Applicant: Tencent America LLC

Inventor： Roman CHERNYAK ,  Biao WANG ,  Xin ZHAO ,  Lien-Fei CHEN ,  Madhu PERINGASSERY KRISHNAN ,  Shan LIU

IPC: G06V20/40 ,  H04N19/117 ,  H04N19/159 ,  H04N19/186 ,  H04N19/70 ,  H04N19/82

Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream that includes encoded video data; obtaining information indicating two or more different clipping ranges for the encoded video data; deriving the two or more different clipping ranges based on the obtained information; performing a first clipping operation on a first portion of the encoded video data based on a first clipping range of the two or more different clipping ranges; and performing a second clipping operation on a second portion of the encoded video data based on a second clipping range different from the first clipping range.

公开(公告)号：US12231699B2

公开(公告)日：2025-02-18

申请号：US18384520

申请日：2023-10-27

Applicant: DOLBY INTERNATIONAL AB

Inventor： Jie Zhao ,  Christopher A. Segall ,  Louis J. Kerofsky

IPC: H04N19/91 ,  H04N19/119 ,  H04N19/15 ,  H04N19/159 ,  H04N19/17 ,  H04N19/174 ,  H04N19/192 ,  H04N19/43 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/136 ,  H04N19/172 ,  H04N19/184 ,  H04N19/40 ,  H04N19/80

Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.

公开(公告)号：US12231656B2

公开(公告)日：2025-02-18

申请号：US18221566

申请日：2023-07-13

Applicant: Sun Patent Trust

Inventor： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

IPC: H04N19/176 ,  H04N19/124 ,  H04N19/13 ,  H04N19/157 ,  H04N19/159 ,  H04N19/196 ,  H04N19/21 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61

Abstract: The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is one of “ref_idx_l0” and “ref_idx_l1”.

公开(公告)号：US12231647B2

公开(公告)日：2025-02-18

申请号：US17969648

申请日：2022-10-19

Applicant: Tencent America LLC

Inventor： Guichun Li ,  Xiang Li ,  Shan Liu

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: In a method, whether a subregion of a current picture includes a fading region that transitions from a first scene to a second scene is determined during a pre-analysis stage. The subregion of the current picture includes one or more coding units (CUs). Whether a bi-prediction with CU-level weight (BCW) mode is applied to the subregion of the current picture at a block level is determined based on whether the subregion of the current picture is determined to include the fading region. An inter prediction is performed on the subregion of the current picture based on whether the subregion is determined to include the fading region and whether the BCW mode is determined to be applied to the subregion of the current picture at the block level.

公开(公告)号：US12231630B2

公开(公告)日：2025-02-18

申请号：US18376588

申请日：2023-10-04

Applicant: LX Semicon Co., Ltd.

Inventor： Hyun Suk Ko ,  Jin Ho Lee ,  Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Dong San Jun ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593 ,  H04N19/96

Abstract: The present invention relates to an intra prediction method and apparatus. The image decoding method according to the present invention may comprise decoding information on intra prediction; and generating a prediction block by performing intra prediction for a current block based on the information on intra prediction. The information on intra prediction may include information on an intra prediction mode, and the intra prediction mode may include a curved intra prediction mode.

公开(公告)号：US12231628B2

公开(公告)日：2025-02-18

申请号：US18168799

申请日：2023-02-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiwei Xu ,  Haitao Yang ,  Yin Zhao

IPC: H04N19/11 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/70

Abstract: A picture prediction method includes receiving a bitstream; parsing the bitstream to obtain a prediction mode of a current block; when the prediction mode of the current block is a combined intra and inter prediction mode, selecting an execution manner of a triangular prediction unit mode according to a preset policy; determining motion information of the current block according to the execution manner of the triangular prediction unit mode; performing a motion compensation process based on the motion information, to obtain an inter prediction sample; obtaining an intra prediction sample according to the prediction mode of the current block; and combining the inter prediction sample and the intra prediction sample to obtain a prediction picture of the current block.

公开(公告)号：US12231626B2

公开(公告)日：2025-02-18

申请号：US18402182

申请日：2024-01-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyeongmoon Jang ,  Naeri Park ,  Junghak Nam

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

Abstract: According to the disclosure of this document, in subblock-based temporal motion vector prediction (sbTMVP), a subblock position for deriving a motion vector in units of a subblock can be efficiently calculated, and through this, video/image coding efficiency can be improved and hardware implementation can be simplified.

公开(公告)号：US20250056039A1

公开(公告)日：2025-02-13

申请号：US18928813

申请日：2024-10-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TAKESHI CHUJOH ,  TOMOHIRO IKAI ,  TOMOKI AONO ,  EIICHI SASAKI ,  TOMONORI HASHIMOTO ,  TIANYANG ZHOU ,  YUKINOBU YASUGI

IPC: H04N19/577 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/59

Abstract: An apparatus includes an inter prediction unit configured to decode multiple reference picture list structures and to select one reference picture list structure from the multiple reference picture list structures on a per picture basis or on a per slice basis, wherein in the multiple reference picture list structures, the number of all reference pictures is one or more.

公开(公告)号：US20250056027A1

公开(公告)日：2025-02-13

申请号：US18926018

申请日：2024-10-24

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Chong Soon LIM ,  Sughosh Pavan SHASHIDHAR ,  Ru Ling LIAO ,  Hai Wei SUN ,  Han Boon TEO ,  Jing Ya LI ,  Kiyofumi ABE ,  Tadamasa TOMA ,  Takahiro NISHI

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

Abstract: An image decoder has circuitry coupled to a memory. The circuitry splits a current image block into a plurality of partitions. The circuitry predicts a first motion vector from a set of uni-prediction motion vector candidates for a first partition of the plurality of partitions, and decodes the first partition using the first motion vector.