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    Adaptive generation of irregular spatial sub-sampling for images
    8.
    发明授权
    Adaptive generation of irregular spatial sub-sampling for images 有权

    公开(公告)号：EP2113884B1

    公开(公告)日：2018-12-05

    申请号：EP09251215.1

    申请日：2009-04-29

    申请人： Sony Corporation ,  Sony Electronics, Inc.

    发明人： Paniconi, Marco

    IPC分类号： H04N19/523

    CPC分类号： G06T3/40 ,  H04N19/105 ,  H04N19/117 ,  H04N19/14 ,  H04N19/59 ,  H04N19/593 ,  H04N19/94

    摘要： An adaptive filter is applied (160) to samples in an initial pattern of samples. The samples in the initial pattern correspond to a subset of the image pixels which are to be predicted using the samples. A level value of each sample in the pattern is varied (165). The level value corresponds to the intensity/signal value of the sample, and may have a strong effect on the prediction power of the samples. A first prediction pattern (i.e., the prediction signal corresponding to the sampling pattern) is generated from the samples. A sample movement process is performed (170) on a current sample in the first prediction pattern to change a current position of the current sample in the first prediction pattern. A local prediction of pixels influenced by the sample is updated if the sample's position is changed. A sample removal process is performed (175) on the current sample to remove the sample from the first pattern if a criteria is satisfied. A local prediction of pixels is updated if the current sample is removed. A second prediction pattern (i.e., the prediction signal corresponding to the new/second sampling pattern) is generated from the samples remaining in the first pattern. The second pattern is output.