Calculating Fourier transform of an image without using fft2 function in matlab.

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Algorithms Analyst
Algorithms Analyst 2012-10-5
Hi every one
I just need the help how to compute the image fourier transformation withourt using the direct fft and ifft functions in matlab?

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Matt J
Matt J 2012-10-5
Hint: You can create a 1D fft matrix as follows
E=exp(-1i*2*pi/N* bsxfun(@times,(0:N-1).',0:N-1));
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Algorithms Analyst
Algorithms Analyst 2012-10-6
I am trying but not approaching my target.....can you please define the function in matlab code without using fft2.that how to write code for f(x,y) including smmation from N=0to N_1

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