NDLI: Compression d'Images par Transformée en Ondelettes

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Compression d'Images par Transformée en Ondelettes

Content Provider	Semantic Scholar
Author	Ammous, Malek Ellouze, Noureddine
Copyright Year	2016
Abstract	1 Compression d'Images par Transformee en Ondelettes Malek AMMOUS, Noureddine ELLOUZE Laboratoire de Signal, Images et Technologies de l’Information (LR-SITI-ENIT) Universite Tunis El Manar Ecole Nationale d’Ingenieurs de Tunis ammous.malek@gmail.com, nourellouze@yahoo.fr, Abstract- Cet article etudie l’effet de l’elimination des sous bandes de la TO par ondelettes Bi-orthogonale 9/7, sur le taux de compression de l’image Lena. Des mesures du Rapport Signal a Bruit Crete PSNR et de l’indice de similarite structurelle SSIM sont operees. Il est montre que la methode de compression d'images, permet d’obtenir une bonne qualite d’image pour un taux de compression non negligeable. Il est montre que, l’elimination des sous-bandes des niveaux de decomposition 1 et 2 donne un taux de compression Tc=16 ; En ajutant en plus la sous bande HH3 le taux de compression devient Tc = 21 pour une qualite d’image sensiblement similaire. Mots cles- Compression d'images, transformation en ondelettes. I. INTRODUCTION La compression des images est une technique utilisee dans le stockage et la transmission d'images numeriques. Cette technique est basee sur la redu
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Volume Number	2016
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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