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    Intra prediction-based video coding method and device using MPM list
    81.
    发明授权
    Intra prediction-based video coding method and device using MPM list 有权

    公开(公告)号：US12192517B2

    公开(公告)日：2025-01-07

    申请号：US18230925

    申请日：2023-08-07

    Applicant: LG ELECTRONICS INC.

    Inventor： Jin Heo ,  Jungah Choi ,  Jangwon Choi ,  Sunmi Yoo ,  Ling Li

    IPC: H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/593

    Abstract: A video decoding method according to the present document comprises the steps of: configuring an MPM list by deriving candidate intra prediction modes on the basis of a first neighboring block located on the left side and a second neighboring block located on the upper side with respect to the current block; deriving an intra prediction mode for the current block on the basis of the MPM list; generating prediction samples for the current block on the basis of the intra prediction mode; and generating a reconstructed picture for the current block on the basis of the prediction samples, wherein a first intra prediction mode of the first neighboring block and a second intra prediction mode of the second neighboring block are the same, wherein the candidate intra prediction modes including a DC mode are derived on the basis of a case where both the first intra prediction mode and the second intra prediction mode are the DC mode.

    Image coding method and apparatus based on intra prediction using MPM list
    83.
    发明授权
    Image coding method and apparatus based on intra prediction using MPM list 有权

    公开(公告)号：US12177420B2

    公开(公告)日：2024-12-24

    申请号：US18131767

    申请日：2023-04-06

    Applicant: LG Electronics Inc.

    Inventor： Ling Li ,  Jaehyun Lim ,  Jin Heo ,  Jangwon Choi ,  Seunghwan Kim

    IPC: H04N11/02 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

    Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure includes receiving intra prediction information including at least one of most probable mode (MPM) flag information representing whether to derive an intra prediction mode for a current block based on MPM candidates for the current block or planar flag information representing whether to determine the intra prediction mode for the current block as a planar mode, deriving the intra prediction mode for the current block based on the MPM flag information and the planar flag information, deriving a predicted block for the current block based on the intra prediction mode for the current block, and generating a reconstructed picture based on the predicted block.

    Method and apparatus for deriving rice parameter in video/image coding system
    86.
    发明授权
    Method and apparatus for deriving rice parameter in video/image coding system 有权

    公开(公告)号：US12041247B2

    公开(公告)日：2024-07-16

    申请号：US17637290

    申请日：2020-08-20

    Applicant: LG ELECTRONICS INC.

    Inventor： Jungah Choi ,  Jin Heo ,  Sunmi Yoo ,  Jangwon Choi ,  Jaehyun Lim ,  Seunghwan Kim

    IPC: H04N19/18 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

    CPC classification number: H04N19/18 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

    Abstract: A video decoding method performed by a decoding apparatus comprises the steps of: acquiring, from a bitstream, residual information for a current transform block, wherein the residual information includes at least one of information indicating a level value of a target transform coefficient within the current transform block or information indicating a residual level value; based on a neighboring transform coefficient of the target transform coefficient, deriving a rice parameter for at least one of the information indicating the level value of the target transform coefficient or the information indicating the residual level value; based on the rice parameter, deriving a bin string for at least one of the information indicating the level value of the target transform coefficient or the information indicating the residual level value; and based on the bin string, deriving the level value of the target transform coefficient.

    INTRA PREDICTION-BASED IMAGE CODING METHOD AND DEVICE USING MPM LIST
    88.
    发明公开
    INTRA PREDICTION-BASED IMAGE CODING METHOD AND DEVICE USING MPM LIST 审中-公开

    公开(公告)号：US20240137501A1

    公开(公告)日：2024-04-25

    申请号：US18377577

    申请日：2023-10-05

    Applicant: LG Electronics Inc.

    Inventor： Jin HEO ,  Sunmi Yoo ,  Ling Li ,  Jangwon Choi ,  Jungah Choi

    IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593

    CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593

    Abstract: An image decoding method according to the present document derives a left mode, which is a candidate intra prediction mode for a left peripheral block of a current block, derives an upper mode, which is a candidate intra prediction mode for an upper peripheral block of the current block, constructs an MPM list on the basis of the left mode and the upper mode, derives an intra prediction mode of the current block on the basis of the MPM list, generates prediction samples of the current block on the basis of the intra prediction mode, generates a restoration picture of the current block on the basis of the prediction samples, and derives the left mode or the upper mode as one from among candidate intra prediction modes of the MPM list, on the basis of when the left mode and the upper mode are not the same and the left mode and the upper mode are respectively a planar mode and a DC mode.

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