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    METHOD AND DEVICE FOR CODING INTRA PREDICTION MODE
    1.
    发明公开
    METHOD AND DEVICE FOR CODING INTRA PREDICTION MODE 审中-公开

    公开(公告)号：EP4459991A1

    公开(公告)日：2024-11-06

    申请号：EP22916846.3

    申请日：2022-12-30

    申请人： LG Electronics Inc.

    发明人： YOO, Sunmi ,  JANG, Hyeongmoon ,  NAM, Junghak ,  CHOI, Jangwon ,  KIM, Seunghwan

    IPC分类号： H04N19/11 ,  H04N19/593 ,  H04N19/132 ,  H04N19/176 ,  H04N19/105 ,  H04N19/70

    摘要： According to the present disclosure, an image decoding method performed by a decoding device includes the steps of: acquiring image information including prediction-related information from a bitstream; deriving an intra prediction mode with respect to a current block on the basis of the prediction-related information; generating prediction samples with respect to the current block on the basis of the intra prediction mode with respect to the current block; and generating reconstruction samples with respect to the current block on the basis of the prediction samples with respect to the current block, wherein the intra prediction mode is derived on the basis of whether an upper neighboring block of the current block exists in the same coding tree unit (CTU) as the current block.

    TRANSFORM-BASED IMAGE CODING
    4.
    发明公开
    TRANSFORM-BASED IMAGE CODING 审中-公开

    公开(公告)号：EP4415358A3

    公开(公告)日：2024-10-16

    申请号：EP24185104.7

    申请日：2020-03-26

    申请人： LG Electronics Inc.

    发明人： KOO, Moonmo ,  LIM, Jaehyun ,  KIM, Seunghwan ,  NAM, Junghak

    IPC分类号： H04N19/61 ,  H04N19/70 ,  H04N19/132 ,  H04N19/11 ,  H04N19/593

    摘要： An image decoding method according to the present document comprises a step for performing inverse first-order transform and inverse non-separable transform on a residual sample. The inverse non-separable transform is performed on the basis of a transform index indicating a predetermined transform kernel matrix, the inverse first-order transform is performed on the basis of a multiple transform selection (MTS) index indicating MTS for a horizontal transform kernel and a vertical transform kernel, and a syntax element bin string for the transform index is derived on the basis of first context information when a tree type for a split structure of a target block is not a single tree type and is derived on the basis of second context information when the tree type is the single tree type.