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    SIMPLIFICATIONS OF CROSS-COMPONENT LINEAR MODEL
    16.
    发明公开
    SIMPLIFICATIONS OF CROSS-COMPONENT LINEAR MODEL 审中-公开

    公开(公告)号：EP4228262A1

    公开(公告)日：2023-08-16

    申请号：EP23179392.8

    申请日：2019-10-08

    申请人： Beijing Dajia Internet Information Technology Co., Ltd.

    发明人： WANG, Xianglin ,  CHEN, Yi-Wen

    IPC分类号： H04N19/186 ,  H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/119 ,  H04N19/157

    摘要： A computing device performs a method of decoding video data by reconstructing a luma block corresponding to a chroma block; searching a sub-group of a plurality of reconstructed neighboring luma samples in a predefined order to identify a maximum luma sample and a minimum luma sample; computing a down-sampled maximum luma sample corresponding to the maximum luma sample; computing a down-sampled minimum luma sample corresponding to the minimum luma sample; generating a linear model using the down-sampled maximum luma sample, the down-sampled minimum luma sample, the first reconstructed chroma sample, and the second reconstructed chroma sample; computing down-sampled luma samples from luma samples of the reconstructed luma block, wherein each down-sampled luma sample corresponds to a chroma sample of the chroma block; and predicting chroma samples of the chroma block by applying the liner model to the corresponding down-sampled luma samples.