We present a novel and computationally simple prediction stage in a Daubechies 5/3 - like lifting structure for lossless image compression. In the 5/3 wavelet, the prediction filter predicts the value of an odd-indexed polyphase component as the mean of its immediate neighbors belonging to the even-indexed polyphase components. The new edge adaptive predictor, however, predicts according to a local gradient direction estimator of the image. As a result, the prediction domain is allowed to flip + or -45 degrees with respect to the horizontal or vertical axes in regions with diagonal gradient. We have obtained good compression results with conventional lossless wavelet coders.


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    Title :

    Lossless image compression using an edge adapted lifting predictor


    Contributors:
    Gerek, O.N. (author) / Cetin, A.E. (author)


    Publication date :

    2005-01-01


    Size :

    463280 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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