%載入圖像
RGB = imread('saturn.png');
%RGB轉換為灰度圖
I = rgb2gray(RGB);
%加入高斯白噪聲
J = imnoise(I,'gaussian',0,0.005);
%采用自適應濾波
K = wiener2(J,[5 5]);
%顯示原始圖像、加入噪聲的圖像以及濾波后的噪聲
imshow(I)
figure,imshow(J)
figure, imshow(K)