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    Image decoding device, image decoding method, and program
    72.
    发明授权
    Image decoding device, image decoding method, and program 有权

    公开(公告)号：US11949860B2

    公开(公告)日：2024-04-02

    申请号：US17855218

    申请日：2022-06-30

    申请人： KDDI CORPORATION

    发明人： Kyohei Unno ,  Kei Kawamura ,  Sei Naito

    IPC分类号： H04N19/117 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/82

    CPC分类号： H04N19/117 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/82

    摘要： An image decoding device, includes a filter unit using, as an input, a decoded signal prior to the filtering process and output a filtered decoded signal. The filter unit performs clipping processing on the decoded signal prior to the filtering process such that the absolute value of a differential value between a reference pixel value and a pixel value of the decoded signal prior to the filtering process is less than or equal to a predefined threshold value, and to generate the filtered decoded signal through the linear weighted addition of the value after the clipping processing is performed and the pixel value of the decoded signal prior to the filtering process; and a large-small relationship between the threshold value for a luma signal and the threshold value for a chroma signal are defined such that the large-small relationship is unchanged when an internal bit depth is changed.

    IMAGE DECODING METHOD FOR RESIDUAL CODING, AND DEVICE THEREFOR
    73.
    发明公开
    IMAGE DECODING METHOD FOR RESIDUAL CODING, AND DEVICE THEREFOR 审中-公开

    公开(公告)号：US20240107034A1

    公开(公告)日：2024-03-28

    申请号：US18511346

    申请日：2023-11-16

    申请人： LG Electronics Inc.

    发明人： Jungah CHOI ,  Sunmi YOO ,  Junghak NAM ,  Jin HEO ,  Jangwon CHOI ,  Seunghwan KIM

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

    CPC分类号： H04N19/18 ,  H04N19/184 ,  H04N19/70

    摘要： 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.