Ideal high pass filter
2016-08-23
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(1) an ideal high pass filter: (D0=15 for example):
I1=imread ('D:Matlabproject low-pass, high-pass filter experimental image. jpg');
figure(1); Imshow (I1), title (' image ');
>> f=double(I1); % Convert data to a double g=fft2 (f); % Of two-dimensional Fourier transform
g=fftshift(g); % Move to the DC component of the fast Fourier transform spectrum of [M,N]=size (g);
d0=15; %Cutoff frequency in the case of 15 m=fix (M/2); n=fix(N/2);
I1=imread ('D:Matlabproject low-pass, high-pass filter experimental image. jpg');
figure(1); Imshow (I1), title (' image ');
>> f=double(I1); % Convert data to a double g=fft2 (f); % Of two-dimensional Fourier transform
g=fftshift(g); % Move to the DC component of the fast Fourier transform spectrum of [M,N]=size (g);
d0=15; %Cutoff frequency in the case of 15 m=fix (M/2); n=fix(N/2);
matlab
滤波器
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理想
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