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- ½ð±Ò: 11
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- ³æºÅ: 2441136
- ×¢²á: 2013-04-29
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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('ÔʼͼÏñ'); %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; Õâ¸ö³ÌÐòÄÄÀï´íÁËÄØ |

5Â¥2013-04-29 12:25:52
lk815160423
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2Â¥2012-06-05 20:03:46
youth0826
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3Â¥2012-06-05 21:47:35
lk815160423
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4Â¥2012-06-05 23:48:41













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