Comparative Survey of the DCT and the Wavelet Transforms for Image Compression

    Volume 34, Issue 6 (November 2006)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 11


    Kammoun, F
    Research Unit: Sciences and Technologies of Image and Telecommunications, Higher Institute of Biotechnology, Sfax,

    Fourati, W
    Research Unit: Sciences and Technologies of Image and Telecommunications, Higher Institute of Biotechnology, Sfax,

    Bouhlel, MS
    Research Unit: Sciences and Technologies of Image and Telecommunications, Higher Institute of Biotechnology, Sfax,

    (Received 1 December 2003; accepted 22 March 2006)

    Abstract

    In the framework of the image compression by transform coding, we studied two transformation techniques, respectively, used in the JPEG and JPEG2000 standards: the discrete cosine transform (DCT) and the wavelets transform (WT). We also studied the influence of different coding techniques on the compression rate.We compare the performances of different wavelets. The set of the techniques that we implemented have been applied on different types of images.We verified the compromise that exists between the compression rate and the quality of the reconstructed image.We noted that when we apply the wavelet transform, we succeeded with best results of those found by the use of the DCT.We note also that the quality of reconstruction is better as we increase the order of the filter associated to the Daubechies wavelets.


    Paper ID: JTE100086

    DOI: 10.1520/JTE100086

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    Author
    Title Comparative Survey of the DCT and the Wavelet Transforms for Image Compression
    Symposium , 0000-00-00
    Committee D27