Courrier du Savoir scientifique et technique
Volume 12, Numéro 12, Pages 27-32
2014-05-11
Lossy Image Compression Using A Three Step Nonlinear Wavelet
Auteurs : Terki Nadjiba . Bentrah Wafa . Saigaa Djamel .
Résumé
The wavelet transform is a powerful and complex tool in the context of data compression. The discovery of the lifting schemes structure make à wavelet filters simple, rapid and reversible. The compression field is an open research area. In recent years, a significant development has experienced leading to the emergence of a large number of applications. This work aims to study some adaptive nonlinear wavelet -developed recently- based on three nonlinear steps. These transforms are applied in lossy image compression; in our work, we used a bit allocation algorithm and scalar quantization.
Mots clés
Nonlinear wavelet, lifting schemes, lossy image compression, bit allocation algorithm, uniform quantization
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