ch4_1_1.m

来自「常用图像处理源码合集」· M 代码 · 共 13 行

clear
N=100
f=zeros(50,50);
f(15:35,23:28)=1;
figure(1)
imshow(f,'notruesize')
F=fft2(f,N,N);
F2=fftshift(abs(F));
figure(2)
x=1:N;y=1:N;
mesh(x,y,F2(x,y));
colormap(gray);colorbar