%Question?No:5
%IDEAL?LOW-PASS?FILTER

function?idealfilter（XP）
f=imread（X）;
[MN]=size（f）;
F=fft2（double（f））;
u=0:（M-1）;
v=0:（N-1）;
idx=find（u>M/2）;
u（idx）=u（idx）-M;
idy=find（v>N/2）;
v（idy）=v（idy）-N;
[VU]=meshgrid（vu）;
D=sqrt（U.^2+V.^2）;
H=double（D<=P）;
G=H.*F;
g=real（ifft2（double（G）））;
imshow（f）figureimshow（g[?]）;
end

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件?????????346??2009-05-20?03:45??idealfilter.m
?????文件????????1335??2009-05-20?03:45??license.txt