[Insight-users] FFT 1D

[herve chloe]

Hi,

I’m a new user of the ITK.
I would like to perform a FFT 1D of a 2D image, namely I want to compute 
FFT1D on each line of the 2D image.

In that purpose, I am trying to select a region, in fact just a line of the 
2D image using either itkImageLinearIteratorWithIndex either 
itkImageRegionIteratorWithIndex either itkImageRegionIterator. Then I 
compute the FFT2D with itkVnlFFTRealToComplexConjugateImageFilter of this 
region next I copy this result in a new image which I have been previously 
allocated. I do the same procedure for all the lines.
Is this a good process?

I have 2 pb : the first is that it doesn’t work and the second is that as 
the FFT2D is shared in two major parts, the first consist in performing a 
FFT1D in one direction and the second is a FFT1D in the orthogonal direction 
performed on the result of the first part.
Can I just stop to the first part?

Sorry for my poor English, I hope you will understand my message.
Any help would be very precious.
Thank you very much

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