In this paper, a new method of image blind denoising is proposed based on symmetric-antisymmetric orthonormal multiwavelet and multilevel threshold. In this method, noise deviation of noised image is estimated firstly; then noised image is decomposed by Sa4 multiwavelet; thirdly according to coefficients energy distribution and estimated noise deviation, the coefficients of different scale are dealed with different threshold; finally image is reconstructed by using the inverse multiwavelet transform. Experimental results prove that this method can get rid of image noise effectively and preserve image details well.


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    Titel :

    An Approach to Image Blind Denoising Based on Symmetric-Antisymmetric Orthonormal Multiwavelet and Multilevel Threshold


    Beteiligte:
    Zhang, Lin (Autor:in) / Wang, Shengqian (Autor:in) / Shu, Zhenghua (Autor:in) / Xie, Zhihua (Autor:in) / Gan, Lixin (Autor:in)


    Erscheinungsdatum :

    01.05.2008


    Format / Umfang :

    475693 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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