%例程7－1  噪聲圖像維納濾波
% e.g.7-1.m for example7-1;
%test the function of weina filter.

RGB = imread('saturn.png');
I = rgb2gray(RGB);
J = imnoise(I,'gaussian',0,0.005); 
figure, imshow(J);
K = wiener2(J,[5 5]);
figure, imshow(K);