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3Â¥2012-06-05 21:47:35
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2Â¥2012-06-05 20:03:46
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3Â¥: Originally posted by youth0826 at 2012-06-05 21:47:35
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4Â¥2012-06-05 23:48:41
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clear all              %ɾ³ý±äÁ¿
close all              %¹Ø±Õ´°¿Ú
clc                  %Çå³ý´°¿Ú
i=imread('biyesheji.jpg');         %ÊäÈëͼÏñ
x=i(:,:,1);                          %Èýάת»»Îª¶þά
subplot(221);                      %н¨´°¿Ú
imshow(x);                              %ÏÔʾͼÏñ
title('ԭʼͼÏñ');                       %ÉèÖÃͼÏñ±êÌâ
axis square;                       %ÉèÖÃÏÔʾ±ÈÀý,Éú³Éº¬ÔëͼÏñ²¢Í¼Ê¾
xx=imnoise(x,'salt & pepper',0.02);         %¸øÍ¼Ïñ¼Ó½·ÑÎÔëÉù      
subplot(222);                   %н¨´°¿Ú
imshow(xx);                     %ÏÔʾͼÏñ
title('º¬ÔëͼÏñ');              %ÉèÖÃͼÏñ±êÌâ
axis square;   
x11=medfilt2(xx,[3 3]);     
x12=double(x11);
[a,b]=size(x12);
[c,s]=wavedec2(x12,3,'coif2');  
n=[1,2,3];               
p4=0.02*(sqrt(2*log(a*b)));
size(detcoef2('h',c,s,1));  
size(detcoef2('v',c,s,1));
size(detcoef2('d',c,s,1));
p1(1)=detcoef2('h',c,s,1);
p2(1)=detcoef2('v',c,s,1);
p3(1)=detcoef2('d',c,s,1);
p1(2)=detcoef2('h',c,s,2);      
p2(2)=detcoef2('v',c,s,2);
p3(2)=detcoef2('d',c,s,2);
for i=1:1:2              
   p1(i)=1/((p1(i)-p4)^2+1);  
     if p1(i)>=p4                  
      p1(i)=sign(p1(i))*(abs(p1(i))-p1(i)*p4);
else
p1(i)=0;
end
     if p2(i)>=p4
      p2(i)=sign(p2(i))*(abs(p2(i))-p2(i)*p4);
else
p2(i)=0;
end
   if p3(i)>=p4
      p3(i)=sign(p3(i))*(abs(p3(i))-p3(i)*p4);
else
p3(i)=0;
end
end   
P=[p1,p2,p3];
nc=wthcoef2('h',c,s,n,p,'s') ;
nc=wthcoef2('v',c,s,n,p,'s') ;
nc=wthcoef2('d',c,s,n,p,'s') ;
mc=wthcoef2('h',nc,s,n,p,'s') ;
mc=wthcoef2('v',nc,s,n,p,'s') ;
mc=wthcoef2('d',nc,s,n,p,'s') ;
x3=waverac2(mc,s,'coif2');
x3=uint8(x3);
subplot(223);                   %н¨´°¿Ú
image(x3);                           %ÏÔʾͼÏñ
title('µÚÒ»´ÎÏûÔëºóµÄͼÏñ');               %ÉèÖÃͼÏñ±êÌâ
axis square;
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С²¨È¥ÔëÇóÖú
5Â¥2013-04-29 12:25:52
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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