摄像机标定角点检测特征提取matlab代码

i=imread('pic1.bmp'); subplot(1,2,1);

imshow(i);

bw1=edge(i,'prewitt'); subplot(1,2,2);

imshow(bw1);

bw1 ;

bing=0;

for i=171:m

if sum(bw1(i,:))==0 bingm=i

break;

end

end

for j=202:n

if sum(bw1(:,j))==0 bingn=j

break;

end

end