imcropï¼æªåå¾åçä¸é¨å
[I2,rect]=imcrop(I1);
I1æ¯å¯¹è±¡å¾å½¢ï¼I2æ¯åªè£åçå¾å½¢ãrectéé¢ä¿åçæªååçç©å½¢å个åæ°ï¼æ ¹æ®ä½ é¼ æ éæ©èå®ãå·¦ä¸è§çx,yçåæ å¼ï¼ç©å½¢ç宽åé«ãæ ¹æ®ä½ é¼ æ éæ©èå®ã
ç»ä½ 个ä¾åï¼æå¨æ¯æ¡è¯å¥éé½æ注é
clear I=imread('bai.jpg'); %读å
¥å¾å
q=imadjust(I,[.2 .3 0;.6 .7 1],[]); %å¢å¼ºå¾åç对æ¯åº¦
j=rgb2gray(q); %彩è²å¾ååç°åº¦å¾å
j1=im2bw(q,230/255);%äºå¼å
se90=strel('line',3,90); %æé å
ç´
se0=strel('line',3,0); %åä¸
BW2=imdilate(j1,[se90 se0]); % ç¨æé çå
ç´ è¨è
BW3=bwareaopen(BW2,100);%å¼æä½
BW3=~BW3;%åå
BW4=bwareaopen(BW3,20);%å¼
BW5=bwperim(BW4);%计ç®BW4å¨é¿
[imx,imy]=size(BW5);计ç®é¿å®½
L=bwlabel(BW5,8);%ç¨ä¸åçæ°åæ ¹æ®æ¯å¦è¿éæ è®°å¾åï¼
a=max(max(L));%å¾å°Lå¾åä¸æ è®°ç»æçæ大å¼
BW6=bwfill(BW5,'hole');%å¡«å
èæ¯
I2=I;
for i=1:3; I2(:,:,i)=I2(:,:,i).*uint8(BW6);
end imshow(I2);
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