Question

matlab逆滤波复原代码

谢谢，

Answer 1

clc;clear all;
%读原始图像%
format long
Blurred=imread('fig525(b).bmp');
subplot(1,2,1);imshow( Blurred);title('原图像');

%自编函数进行维纳滤波%
k=0.0025;
[m,n]=size(Blurred);
spectrum=zeros(m,n);
H=zeros(m,n);
for u=1:m
for v=1:n
H(u,v)=exp(-k*((u-m/2)^2+(v-n/2)^2)^(5/6));
spectrum(u,v)=H(u,v)^2;
end
end

f=double(Blurred);
F1=fftshift(fft2(f));
HW=H./(spectrum+0.001);

restore1=HW.*F1;
restored=real(ifft2(ifftshift(restore1)));

subplot(1,2,2);imshow(restored,[]);title('自编函数进行维纳滤波');

%调用matlab提供的维纳滤波函数%
figure;
hw1=real(ifft2(ifftshift(H)));%转化到空域上来
result1=deconvwnr(Blurred,hw1,0.001);
result2=ifftshift(result1);%再去图像进行1，3象限对调，2与4象限对调
subplot(1,2,1);imshow(result2,[]);title('调用维纳滤波函数');