using discrete FT with iradon
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Dear all,
according to the matlab documentation:
'iradon uses the filtered back-projection algorithm to perform the inverse Radon transform. The filter is designed directly in the frequency domain and then multiplied by the FFT of the projections.'
I want however to try and do the procedure using discrete FT and not fast FT. Does anyone know of how to do this?
Thanks
Matt
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Accepted Answer
Steve Eddins
on 25 May 2011
Fast Fourier transform, or FFT, refers to a family of fast algorithms for computing the discrete Fourier transform, or DFT. See these blog posts for information about different kinds of Fourier transforms and the relationships between them.
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Steve Eddins
on 26 May 2011
No. You could try the different filtering and interpolation options with iradon. However, the idea that there is a difference between a "full DFT" and what the MATLAB fft function calculates is simply incorrect.
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