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%讀出要處理的圖象
clear
clc
close?all
bw=imread（‘e:\11.jpg‘）;

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%對(duì)圖象進(jìn)行預(yù)處理

%畫出原始圖象
bw1=rgb2gray（bw）;
figure（1）
imshow（bw1）
title（‘原始圖象‘）

%對(duì)圖象進(jìn)行均值濾波處理
bw2=filter2（fspecial（‘a(chǎn)verage‘3）bw1）;
figure（2）
imshow（bw2）
title（‘均值濾波‘）

%對(duì)圖象進(jìn)行高斯濾波處理
bw3=filter2（fspecial（‘gaussian‘）bw2）;
figure（3）
imshow（bw3）
title（‘高斯濾波‘）

%利用小波變換對(duì)圖象進(jìn)行降噪處理
[thrsorhkeepapp]=ddencmp（‘den‘‘wv‘bw3）;?????%獲得除噪的缺省參數(shù)
bw4=wdencmp（‘gbl‘bw3‘sym4‘2thrsorhkeepapp）;%圖象進(jìn)行降噪處理
figure（4）
imshow（bw4）

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