4楼: Originally posted by stacy.wang at 2013-05-14 11:15:38
用ostu算法做呀。。这个就是基于直方图的分割，效果还不错

2楼: Originally posted by dusonny at 2013-05-13 10:04:36
算法：
灰度值大于128则置为255，小于128则置为0；
代码：
I=imread('cameraman.tif');
=size(I);
for i=1:w
for j=1:l
if I(i,j)<128
I(i,j)=0;
else
I(i,j)=255;
end
end
end
imshow(I);