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    METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL FOR INTRA PREDICTION
    43.
    发明公开
    METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL FOR INTRA PREDICTION 审中-公开

    公开(公告)号：US20240179306A1

    公开(公告)日：2024-05-30

    申请号：US18432905

    申请日：2024-02-05

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593

    CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593

    Abstract: Embodiments of the present specification provide a method and a device for processing a video signal for intra prediction. A method for decoding a video signal according an embodiment of the present disclosure includes: obtaining intra prediction information of a current block to which the intra prediction is applied, in which the intra prediction information includes a first flag indicating a predetermined first mode; determining an intra prediction mode of the current block based on the intra prediction information, wherein when the first flag corresponds to a first value, the first mode is determined as the intra prediction mode and when the first flag corresponds to a second value, one of a plurality of candidate modes is determined as the intra prediction mode; and generating a prediction sample of the current block based on the intra prediction mode and a reference sample in a current picture. A separate flag indicating whether to use a primarily used specific mode is used to reduce a data amount for transmission of the intra prediction mode and a processing time of information of the intra prediction.

    Image decoding method for residual coding, and device therefor
    45.
    发明授权
    Image decoding method for residual coding, and device therefor 有权

    公开(公告)号：US11882296B2

    公开(公告)日：2024-01-23

    申请号：US17957986

    申请日：2022-09-30

    Applicant: LG Electronics Inc.

    Inventor： Jungah Choi ,  Sunmi Yoo ,  Junghak Nam ,  Jin Heo ,  Jangwon Choi ,  Seunghwan Kim

    IPC: H04N19/18 ,  H04N19/184 ,  H04N19/70

    CPC classification number: H04N19/18 ,  H04N19/184 ,  H04N19/70

    Abstract: An image decoding method carried out by a decoding device, according to the present document, comprises the steps of: acquiring a sign data hiding enable flag; acquiring a transform skip residual coding (TSRC) enable flag on the basis of the sign data hiding enable flag; acquiring residual information for a current block, on the basis of the TSRC enable 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 residual sample, wherein the sign data hiding enable flag is a flag indicating whether sign data hiding is enabled, the TSRC enable flag is a flag indicating whether TSRC is enabled, and the TSRC enable flag is acquired on the basis of the sign data hiding enable flag having a value of zero.

    Image coding method and device for carrying out MRL-based intra prediction
    48.
    发明授权
    Image coding method and device for carrying out MRL-based intra prediction 有权

    公开(公告)号：US11716461B2

    公开(公告)日：2023-08-01

    申请号：US17374274

    申请日：2021-07-13

    Applicant: LG Electronics Inc.

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

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

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

    Abstract: An image decoding method includes: configuring a MPM list including candidate intra prediction modes for a current block; deriving an intra prediction mode of the current block from the MPM list on the basis of MPM index information indicating an intra prediction mode, among the candidate intra prediction modes included in the MPM list, for the current block; 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 the step for configuring the MPM list comprises, on the basis of the case where the value of reference line index information, representing a reference line used for the intra prediction of the current block, is not zero, deriving a DC mode as one mode among the candidate intra prediction modes, and including same in the MPM list.

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