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    Image decoding method and apparatus
    31.
    发明授权
    Image decoding method and apparatus 有权

    公开(公告)号：US12244857B2

    公开(公告)日：2025-03-04

    申请号：US18627121

    申请日：2024-04-04

    Applicant: LG Electronics Inc.

    Inventor： Sunmi Yoo ,  Junghak Nam ,  Jungah Choi

    IPC: H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/70

    Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: acquiring image information including a block-based delta pulse code modulation (BDPCM) constraint flag indicating whether or not BDPCM is constrained with respect to an image; acquiring BDPCM-associated information regarding a current block on the basis of the BDPCM constraint flag; and generating reconstructed samples for the current block on the basis of the BDPCM-associated information.

    IMAGE DECODING METHOD AND APPARATUS THEREFOR
    32.
    发明申请
    IMAGE DECODING METHOD AND APPARATUS THEREFOR 有权

    公开(公告)号：US20250047903A1

    公开(公告)日：2025-02-06

    申请号：US18925410

    申请日：2024-10-24

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04N19/60 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

    Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: acquiring a transform skip available flag; acquiring a TSRC available flag on the basis of the transform skip available flag; acquiring prediction-related information regarding a current block; deriving a prediction sample of the current block on the basis of the prediction-related information; acquiring residual information of a residual coding syntax for the current block, derived on the basis of the TSRC available flag; deriving a residual sample of the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the prediction sample and the residual sample.

    Image decoding method using BDPCM and device therefor
    33.
    发明授权
    Image decoding method using BDPCM and device therefor 有权

    公开(公告)号：US12177458B2

    公开(公告)日：2024-12-24

    申请号：US18517527

    申请日：2023-11-22

    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.

    Intra prediction-based video coding method and device using MPM list
    36.
    发明授权
    Intra prediction-based video coding method and device using MPM list 有权

    公开(公告)号：US12126830B2

    公开(公告)日：2024-10-22

    申请号：US17749793

    申请日：2022-05-20

    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

    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.

    Image decoding method and device using residual information in image coding system
    40.
    发明授权
    Image decoding method and device using residual information in image coding system 有权

    公开(公告)号：US12028526B2

    公开(公告)日：2024-07-02

    申请号：US18142199

    申请日：2023-05-02

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04N19/13 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/60

    CPC classification number: H04N19/13 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/60

    Abstract: An image decoding method includes receiving residual information including first size related information for a first residual coefficient and second size related information for a second residual coefficient, setting a Rice parameter of the first size related information and the second size related information as a specific value, deriving available binary values based on the Rice parameter, deriving binary values of the first size related information and the second size related information by decoding the first size related information and the second size related information, deriving values of the first size related information and the second size related information by comparing the binary values and the available binary values, deriving the first residual coefficient and the second residual coefficient based on the values, and reconstructing a current picture based on the first residual coefficient and the second residual coefficient.

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