ADAPTIVE FIR FILTER DESIGH APPLIED ON DIGITAL IMAGE COMPRESSION IN WAVELETS DECOMPOSITION

A., Bounoua; S.m.a, Wady; M., Gharbi

Communication science et technologie
Volume 2, Numéro 1, Pages 90-96
2003-12-01

Adaptive Fir Filter Desigh Applied On Digital Image Compression In Wavelets Decomposition

Authors : A. Bounoua . S.m.a Wady . M. Gharbi .

Abstract

In this paper,data image compression with loss,wavelet and adaptive filtering are considered.Performances of the subband asaptive digital filter are discussed.We propose an adaptive low pass filter in the wavelets decomposition tree.The idea is to decompose a digital image using an adaptive FIR fiilter in rach low frequency subband and compare it with an invariant filter of Daubechies.The adaptive filter is conceived by the ADFFLS (Adaptive Digital Filter with Fast Least Square) method.We employ a framework that includes the main comparison parameters.It is clearly show here that it provides better performances than invariant filters in most applications.The filter performances on most applications.The filter performances on the different stages of the data image compared with an invariant and biorthgonal filter of Daubechies.This is done studying of the main parameters.This study resides in the meticulous choice of comparison parameters and the different stages of comparison.Results show that thePSNR,the correlation between original and reconstructed images and the adaptive filter for different lenghts,quantifiers ,and quantification levels.