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    Image decoding method and apparatus based on inter-prediction in image coding system
    91.
    发明授权
    Image decoding method and apparatus based on inter-prediction in image coding system 有权

    公开(公告)号：US11057640B2

    公开(公告)日：2021-07-06

    申请号：US16767925

    申请日：2018-11-28

    Applicant: LG ELECTRONICS INC.

    Inventor： Naeri Park ,  Seethal Paluri ,  Junghak Nam ,  Jungdong Seo ,  Jaeho Lee ,  Hyeongmoon Jang

    IPC: H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186

    Abstract: A video decoding method performed by a decoding apparatus includes obtaining information regarding inter-prediction of a current block via a bitstream; forming an MVP candidate list based on neighbouring blocks of the current block; deriving costs with respect to MVP candidates that are included in the MVP candidate list; deriving a revised MVP candidate list based on the costs with respect to the MVP candidates; deriving MVP of the current block based on the revised MVP candidate list; deriving a motion vector of the current block based on the MVP and MVD of the current block; and performing prediction on the current block based on a reference picture index and the motion vector of the current block. The information regarding inter-prediction includes the reference picture index and the MVD.

    Image decoding method and device therefor
    95.
    发明授权
    Image decoding method and device therefor 有权

    公开(公告)号：US12212766B2

    公开(公告)日：2025-01-28

    申请号：US17925983

    申请日：2021-05-04

    Applicant: LG Electronics Inc.

    Inventor： Hendry Hendry ,  Seunghwan Kim ,  Seethal Paluri

    IPC: H04N19/423 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

    Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: deriving a value of a variable on the basis of whether a current picture is a first picture of a current access unit (AU) that is a coded video sequence start access unit (CVSS) AU instead of AU 0, wherein the variable indicates whether all picture storage buffers within a decoded picture buffer (DPB) are emptied without being output; updating the DPB on the basis of the variable; and decoding the current picture on the basis of the updated DPB.

    Image/video coding method and device
    97.
    发明授权
    Image/video coding method and device 有权

    公开(公告)号：US12192470B2

    公开(公告)日：2025-01-07

    申请号：US18381446

    申请日：2023-10-18

    Applicant: LG ELECTRONICS INC.

    Inventor： Seethal Paluri ,  Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

    IPC: H04N19/70 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46

    Abstract: A video decoding method performed by a video decoding device according to the present document comprises the steps of: acquiring image information from a bitstream, the image information including a picture header associated with the current picture including a plurality of slices; parsing, from the picture header, a first flag indicating whether information necessary for an inter-prediction operation for a decoding process is present in the picture header; parsing, from the picture header, a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; and generating prediction samples by performing at least one of intra-prediction or inter-prediction for the slices in the current picture on the basis of the first flag or the second flag.

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