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    METHOD FOR CODING INTRA-PREDICTION MODE, AND DEVICE FOR SAME
    23.
    发明公开
    METHOD FOR CODING INTRA-PREDICTION MODE, AND DEVICE FOR SAME 审中-公开

    公开(公告)号：US20230344988A1

    公开(公告)日：2023-10-26

    申请号：US18216248

    申请日：2023-06-29

    Applicant: LG ELECTRONICS INC.

    Inventor： Ling LI ,  Seunghwan KIm

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

    CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

    Abstract: A picture decoding method which is performed by a decoding apparatus according to an example of the present disclosure includes constructing a Most Probable Modes (MPM) list including intra prediction mode candidates for a current block based on neighboring blocks of the current block, decoding remaining mode information indicating one of remaining intra prediction modes other than the intra prediction mode candidates included in the MPM list from a bitstream, determining an intra prediction mode of the current block based on the decoded remaining mode information, generating prediction samples for the current block based on the determined intra prediction mode, and generating reconstructed samples for the current block based on the prediction samples for the current block, wherein the remaining mode information is decoded based on a truncated binary code.

    INTRA PREDICTION-BASED IMAGE CODING METHOD AND APPARATUS USING MPM LIST
    25.
    发明公开
    INTRA PREDICTION-BASED IMAGE CODING METHOD AND APPARATUS USING MPM LIST 审中-公开

    公开(公告)号：US20230291891A1

    公开(公告)日：2023-09-14

    申请号：US18198095

    申请日：2023-05-16

    Applicant: LG ELECTRONICS INC.

    Inventor： Ling LI ,  Jin Heo ,  Seunghwan Kim

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

    CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

    Abstract: A video decoding method according to this document includes deriving a first candidate intra prediction mode based on a first neighboring block located on a left side of a current block, deriving a second candidate intra prediction mode based on a second neighboring block located on an upper side of the current block, constructing a most probable mode (MPM) list for the current block based on the first candidate intra prediction mode and the second candidate intra prediction mode, deriving an intra prediction mode for the current block based on the MPM list, generating predicted samples by performing prediction for the current block based on the intra prediction mode, and generating a reconstructed picture for the current block based on the predicted samples.

    INTRA PREDICTION-BASED IMAGE CODING METHOD USING MPM LIST AND APPARATUS THEREFOR
    26.
    发明公开
    INTRA PREDICTION-BASED IMAGE CODING METHOD USING MPM LIST AND APPARATUS THEREFOR 审中-公开

    公开(公告)号：US20230199173A1

    公开(公告)日：2023-06-22

    申请号：US18109656

    申请日：2023-02-14

    Applicant: LG ELECTRONICS INC.

    Inventor： Jin HEO ,  Seunghwan KIM ,  Ling LI

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

    CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/132 ,  H04N19/176

    Abstract: An image decoding method according to the present disclosure comprises deriving a first candidate intra prediction mode based on a first neighboring block of a current block; deriving a second candidate intra prediction mode based on a second neighboring block of the current block; constructing MPM (Most Probable Mode) list of the current block based on the first candidate intra prediction mode and the second candidate intra prediction mode; deriving an intra prediction mode for the current block based on the MPM list; and generating a prediction sample for the current block based on the intra prediction mode, wherein the first neighboring block is a left neighboring block located at the lowermost side among neighboring blocks adjacent to a left boundary of the current block, and wherein the second neighboring block is an upper neighboring block located at the rightmost side among neighboring blocks adjacent to an upper boundary of the current block.

    INTRA PREDICTION METHOD AND APPARATUS IN IMAGE CODING SYSTEM
    28.
    发明申请
    INTRA PREDICTION METHOD AND APPARATUS IN IMAGE CODING SYSTEM 有权

    公开(公告)号：US20230039654A1

    公开(公告)日：2023-02-09

    申请号：US17964368

    申请日：2022-10-12

    Applicant: LG ELECTRONICS INC.

    Inventor： Ling LI ,  Seunghwan KIM ,  Jin HEO

    IPC: H04N19/11 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

    Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: obtaining a reference sample line index of a current block and most probable mode (MPM)-related information; constructing an alternative MPM list on the basis of the reference sample line index; deriving an intra prediction mode of the current block on the basis of the alternative MPM list and the MPM-related information; and generating a predicted block of the current block on the basis of the intra prediction mode, wherein the alternative MPM list is constructed on the basis of an intra prediction mode of an upper adjacent block of the current block and an intra prediction mode of a left adjacent block of the current block.

    INTRA PREDICTION METHOD AND APPARATUS BASED ON MULTI-REFERENCE LINE IN IMAGE CODING SYSTEM
    30.
    发明申请
    INTRA PREDICTION METHOD AND APPARATUS BASED ON MULTI-REFERENCE LINE IN IMAGE CODING SYSTEM 有权

    公开(公告)号：US20220166968A1

    公开(公告)日：2022-05-26

    申请号：US17438567

    申请日：2019-11-14

    Applicant: LG Electronics Inc.

    Inventor： Jangwon CHOI ,  Jaehyun LIM ,  Jin HEO ,  Ling LI ,  Seunghwan KIM

    IPC: H04N19/105 ,  H04N19/176 ,  H04N19/593 ,  H04N19/132 ,  H04N19/167

    Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: obtaining reference line index information and prediction information for a current block; determining an intra prediction mode of the current block on the basis of the prediction information; deriving a reference sample of the current block on the basis of the intra prediction mode and the reference line index information; and generating a prediction sample of the current block on the basis of the reference sample, wherein the intra prediction mode includes a non-directional intra prediction mode, and the reference sample is derived from among surrounding samples of the current block on the basis of the non-directional intra prediction mode and the reference line index information.

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