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    Method and device for signaling image information
    55.
    发明授权
    Method and device for signaling image information 有权

    公开(公告)号：US12206857B2

    公开(公告)日：2025-01-21

    申请号：US17784556

    申请日：2020-12-10

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry Hendry ,  Seunghwan Kim

    IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/86

    Abstract: An image decoding method performed by a decoding apparatus, according to the present disclosure, comprises the steps of: obtaining indication information including a first flag which indicates whether signaling of a reference picture list, to be applied to a current block, is applied at a picture level or a slice level; on the basis of the first flag, parsing, from a picture header or a slice header, information related to the signaling of the reference picture list; performing inter-prediction on the basis of the information related to the signaling of the reference picture list so as to derive prediction samples for the current block; and generating, on the basis of the prediction samples, reconstructed samples for the current block.

    Motion field estimation based on motion trajectory derivation
    56.
    发明授权
    Motion field estimation based on motion trajectory derivation 有权

    公开(公告)号：US12206842B2

    公开(公告)日：2025-01-21

    申请号：US18424445

    申请日：2024-01-26

    Applicant: GOOGLE LLC

    Inventor： Yaowu Xu ,  Bohan Li ,  Jingning Han

    IPC: H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/573

    Abstract: A motion field estimate determined using motion vector information of two or more reference frames of a current/encoded frame is used to derive a motion vector for inter-prediction of the current/encoded frame. Motion trajectory information, including concatenated motion vectors and locations of the current/encoded frame at which those concatenated motion vectors point, is determined by concatenating motion vectors of the reference frames. A motion field estimate is determined using the motion trajectory information and, in some cases, by interpolating unavailable motion vectors using neighbors. The motion field estimate is used to determine a co-located reference frame for the current/encoded frame, and an inter-prediction process is performed for the current/encoded frame using a motion vector derived using the co-located reference frame. During decoding, the motion field estimate may be determined using motion vectors signaled within a bitstream and without additional side information, thereby improving prediction coding efficiency.

    Video decoding method, video encoding method, related devices, and storage medium
    57.
    发明授权
    Video decoding method, video encoding method, related devices, and storage medium 有权

    公开(公告)号：US12206841B2

    公开(公告)日：2025-01-21

    申请号：US17977589

    申请日：2022-10-31

    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

    Inventor： Yingbin Wang

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/182 ,  H04N19/46

    Abstract: A video decoding method, a video encoding method, related devices, and a storage medium are provided. The video decoding method includes: determining a current string to be decoded from a current coding unit of a current image; based on the current string being a unit vector string and the current string including a first pixel, determining a reference pixel of the first pixel from a historical decoding unit in the current image, the historical decoding unit being a decoded coding unit adjacent to the current coding unit in the current image, the reference pixel of the first pixel being adjacent to the first pixel in the current image; and acquiring a predicted value of the first pixel based on a reconstructed value of the reference pixel of the first pixel to obtain a decoded image.

    ON LIST CONSTRUCTION OF CODED INFORMATION OF INTER PREDICTION
    59.
    发明申请
    ON LIST CONSTRUCTION OF CODED INFORMATION OF INTER PREDICTION 有权

    公开(公告)号：US20250024045A1

    公开(公告)日：2025-01-16

    申请号：US18770485

    申请日：2024-07-11

    Applicant: Tencent America LLC

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

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

    Abstract: A method includes receiving a bitstream of coded information for a sequence of pictures, the coded information indicates an inter prediction of a current block in a current picture using a formular based inter prediction technique, the formular based inter prediction technique generates a prediction sample of the current block based on a formular with reconstructed samples of a reference block in a reference picture being input to the formular, the formular includes parameters derived based on a current template of the current block and a reference template of the reference block. The method also includes constructing a candidate list including one or more coded blocks associated with the current block, a coded block in the one or more coded blocks is a candidate that provides formular based inter prediction information.

    IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND PROGRAM
    60.
    发明申请
    IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND PROGRAM 有权

    公开(公告)号：US20250024026A1

    公开(公告)日：2025-01-16

    申请号：US18903761

    申请日：2024-10-01

    Applicant: KDDI CORPORATION

    Inventor： Kyohei UNNO ,  Kei KAWAMURA ,  Sei NAITO

    IPC: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513

    Abstract: An image decoding device includes: a motion vector decoding unit that decodes a motion vector from encoded data; a refinement unit that performs refinement processing to correct the decoded motion vector; and a predictive signal generation unit that generates a predictive signal on the basis of the corrected motion vector outputted from the refinement unit. The predictive signal generation unit determines whether or not to apply BDOF processing for each block, on the basis of information calculated in the course of the refinement processing.

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