[Insight-users] Filter, vector and FFT

[Emiliano Beronich]

Hello everybody,

I need to apply a FFT on a N-vector (it could be a N-vector or it could 
work on the rows of an image). After that I want to perform frequency 
filtering. I would like to build an ITK filter. My questions are:

1) Which class should I choose to derive my own filter from?

2) What class should I choose to support my data? is it right ITKImage?

3) How can I perform a 1D-FFT on an ITKImage row? It can be done with a 
vnl_vector but I don't know how to do it on a ITKImage. It could be done 
filling by hand my own vnl_vector from the ITKImage and then to do the 
FFT, but I'm wondering if there is a more direct (efficient) way to do it.

thanks for any help.

Regards,
-Emiliano Beronich