This paper presents a new image coding technique based on oriented ID multiscale decompositions on a quincunx sampling grid. A transform obtained by adapting the lifting steps of a ID wavelet transform along a local orientation is described. A quad-tree structure is used to efficiently code the orientation map, and optimized in the rate-distortion sense. A gain of up to 1.3 dB over the separable wavelet transform is observed for a set of images, with the rate estimated from the stationary entropy of the subbands.


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    Titel :

    Oriented wavelet transform on a quincunx pyramid for image compression


    Beteiligte:
    Chappelier, V. (Autor:in) / Guillemot, C. (Autor:in)


    Erscheinungsdatum :

    01.01.2005


    Format / Umfang :

    223852 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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