Hi,

I would like to know how to match the FFT implementation of matlab fftn function using ITK.

I tried both itkForwardFFTImageFilter alone and the PadIlmageFilter + ForwardFFTImageFilter. taken from https://itk.org/ITKExamples/src/Filtering/FFT/ComputeForwardFFT/Documentation.html

So far the results are different in both cases for a 3D image. I’m in the process of implementing a filter, and I’m worried about these coefficient differences. I couldn’t find explicit references of potential difference in the documentation nor on Mathwork…

thanks