Denoising of images using locally adaptive Wiener filter in wavelet domain

In this paper, a Wiener filtering method in wavelet domain is proposed for restoring an image corrupted by additive white noise. The proposed method u tilizes the multiscale characteristics of wavelet transform and the local s tatistics of each subband. The size of a filter window for estimating tile local statistics in each subband varies with each scale. The local statisti cs for every pixel in each wavelet subband are estimated by using only the pixels which have a similar statistical property. Experimental results show that the proposed method has better performance over the Lee filter with a window of fixed size.