chazhtuxtz1.m

来自「包括MATLAB7.0实用指南（下）中所有例子的源代码」· M 代码 · 共 13 行

bw=imread('teXt.png');
a=bw(32:45,88:98);
imshow(bw);
figure;
imshow(a);
c=real(ifft2(fft2(bw).*fft2(rot90(a,2),256,256)));
figure;
imshow(c,[]);
max(c(:));
thresh=50;
figure;
imshow(c>thresh);