Titre : An improved scheme dedicated to multispectral images telebrowsingAuteur(s) : A. Benazza-Benyahia (1), J-. C. Pesquet (2), M. Hamdi (1) Laboratoire(s) :
Résumé :The topic of this paper deals with coding methods dedicated to progressive telebrowsing of multispectral images. In previous works, we have proposed a general subband decomposition scheme with perfect reconstruction which has the merit of exploiting simultaneously the spatial and the spectral redundancies of multispectral images. In this paper, we provide a specific decomposition able to code four-component images. Furthermore, we discuss the opportunity of a preprocessing stage. Finally, we evaluate the performances of the proposed coders on SPOT images. Liste de mots-clefs :Lossless coding, spectral and spatial decorrelation, progressive reconstruction. |