[Insight-developers] Consistency in the output of forward/inverse FFT image filters

[Cory Quammen]

[snip]
>
> It's a very good idea.
>
> What would you think of adding a new filter to produce the full image from
> the half output of the fft filter instead of adding an option to the fft
> filter?

That's a good suggestion that would simplify things. Are you proposing
to make the VNL FFT filter always produce a half output image for real
inputs? I don't object, but just want to be clear what you are
proposing. I think most of the time people will want to operate on the
half images and only use the half-to-full image filter for display
purposes.

> Also, would that behavior make sense when working on complex images?

No. I was thinking the option would be ignored for complex inputs on
the forward filter and complex outputs on the inverse filter (full
images would always be assumed), but that just makes the code and
documentation more complicated :-)

Thanks,
Cory

>
>
> --
> Gaëtan Lehmann
> Biologie du Développement et de la Reproduction
> INRA de Jouy-en-Josas (France)
> tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
> http://mima2.jouy.inra.fr  http://www.itk.org
> http://www.bepo.fr
>
>



-- 
Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill