æ¯ä½ ææ代ç æ¶ååºéäºã
ä¸é¢ä¸è¡ï¼ç©ºæ ¼é£ï¼ææ¹äºä¸å°±å¯ä»¥è¿è¡äº
J=imnoise(I,'gaussian',0,0.002);ã%å å
¥é«æ¯åªå£°
I4=wiener2(J,[3,3]);ã %è¿è¡ä¸æ¬¡ç»´çº³æ»¤æ³¢
I5=wiener2(I4,[3,3]);ã%è¿è¡äºæ¬¡ç»´çº³æ»¤æ³¢
å¦ä¸ï¼
clc;clear;
I=imread('1.bmp');
I=rgb2gray(I);
J=imnoise(I,'gaussian',0,0.002);%å å
¥é«æ¯åªå£°
%è¿è¡åå¼æ»¤æ³¢
h=fspecial('average',3);
I2=uint8(round(filter2(h,I)));
%è¿è¡ä¸å¼æ»¤æ³¢
I3=medfilt2(J,[3,3]);
%è¿è¡ç»´çº³æ»¤æ³¢
I4=wiener2(J,[3,3]); %è¿è¡ä¸æ¬¡ç»´çº³æ»¤æ³¢
I5=wiener2(I4,[3,3]);%è¿è¡äºæ¬¡ç»´çº³æ»¤æ³¢
subplot(2,3,1),imshow(I),title('åå¾è±¡')
subplot(2,3,2),imshow(J),title('å åªå£°å¾è±¡')
subplot(2,3,3),imshow(I2),title('åå¼æ»¤æ³¢åå¾è±¡')
subplot(2,3,4),imshow(I3),title('ä¸å¼æ»¤æ³¢åå¾è±¡')
subplot(2,3,5),imshow(I4),title('维纳滤波åå¾è±¡')
subplot(2,3,6),imshow(I5),title('两次维纳滤波åå¾è±¡')
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