?? wiener.m
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function out = Wiener(Noisy,in,sigma)
% Wiener -- Wiener filter.
% Usage
% out = wiener(Noisy,in,sigma)
% Inputs
% Noisy Noisy input signal.
% in Original signal.
% sigma s.d of the additve GWN
% Outputs
% out Restored image.
%
Y=fft(in);
FN=fft(Noisy);
n=length(in);
PY=abs(Y.*Y);
H=PY./(PY+ n*sigma^2);
FN=FN.*H;
out=real(ifft(FN));
% Written by Maureen Clerc and Jerome Kalifa, 1997
% clerc@cmapx.polytechnique.fr, kalifa@cmapx.polytechnique.fr
%
% Part of WaveLab Version 802
% Built Sunday, October 3, 1999 8:52:27 AM
% This is Copyrighted Material
% For Copying permissions see COPYING.m
% Comments? e-mail wavelab@stat.stanford.edu
%
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