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    IMAGE DECODING METHOD USING BDPCM AND DEVICE THEREFOR
    152.
    发明申请
    IMAGE DECODING METHOD USING BDPCM AND DEVICE THEREFOR 有权

    公开(公告)号：US20250071297A1

    公开(公告)日：2025-02-27

    申请号：US18942083

    申请日：2024-11-08

    Applicant: LG ELECTRONICS INC.

    Inventor： Sunmi YOO ,  Junghak NAM ,  Jungah CHOI

    IPC: H04N19/176 ,  H04N19/132 ,  H04N19/159 ,  H04N19/593 ,  H04N19/70

    Abstract: An image decoding method performed by a decoding apparatus according to the present document comprises the steps of: deriving prediction samples for a first sample and a second sample of the current block on the basis of BDPCM-related information about the current block and neighboring samples of the current block; deriving residual samples for the first sample and the second sample on the basis of a residual coefficient of the first sample and a modified residual coefficient of the second sample; and storing, as the intra prediction mode of the current block, the intra prediction mode in the prediction direction of the current block, which is derived on the basis of a BDPCM direction flag.

    VIDEO DECODING METHOD USING RESIDUAL INFORMATION IN VIDEO CODING SYSTEM, AND APPARATUS THEREOF
    153.
    发明申请
    VIDEO DECODING METHOD USING RESIDUAL INFORMATION IN VIDEO CODING SYSTEM, AND APPARATUS THEREOF 有权

    公开(公告)号：US20240380910A1

    公开(公告)日：2024-11-14

    申请号：US18782189

    申请日：2024-07-24

    Applicant: LG Electronics Inc.

    Inventor： Sunmi YOO ,  Jungah CHOI ,  Seunghwan KIM

    IPC: H04N19/46 ,  H04N19/103 ,  H04N19/136 ,  H04N19/176

    Abstract: A video decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: receiving residual information for a current block; deriving a context model for a sine flag of a current residual coefficient in a current sub-block of the current block; decoding the sine flag on the basis of the context model; deriving the current residual coefficient on the basis of the sine flag; deriving a residual sample on the basis of the current residual coefficient; and generating a reconstructed picture on the basis of the residual sample, wherein the context model for the sine flag is derived on the basis of a sine flag of a residual coefficient decoded before the current residual coefficient in the current sub-block.

    IMAGE PREDICTION METHOD AND APPARATUS FOR PERFORMING INTRA PREDICTION
    157.
    发明公开
    IMAGE PREDICTION METHOD AND APPARATUS FOR PERFORMING INTRA PREDICTION 审中-公开

    公开(公告)号：US20240073451A1

    公开(公告)日：2024-02-29

    申请号：US18385897

    申请日：2023-10-31

    Applicant: LG ELECTRONICS INC.

    Inventor： Sunmi YOO ,  Jin HEO

    IPC: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176

    CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176

    Abstract: An image decoding method according to the present document may comprise the steps of: deriving an intra prediction mode for a current block; deriving reference samples located around the current block; generating a prediction sample for the current block on the basis of the intra prediction mode and the reference samples; and generating residual samples for the current block on the basis of the prediction sample, wherein the step of generating the prediction sample for the current block may comprise the steps of: deriving an interpolation filter, which is to be applied to the reference sample, on the basis of the prediction mode of the current block or the size of the current block; and generating the prediction sample by applying the derived interpolation filter to the reference sample.

    INTRA PREDICTION-BASED VIDEO CODING METHOD AND DEVICE USING MPM LIST
    160.
    发明公开
    INTRA PREDICTION-BASED VIDEO CODING METHOD AND DEVICE USING MPM LIST 审中-公开

    公开(公告)号：US20230379493A1

    公开(公告)日：2023-11-23

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

    CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176

    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.

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