<DIV>Hi Remi, </DIV>
<DIV> </DIV>
<DIV>Sorry to bother you. I see your posted email to insight-users list about how to compute FFT and delete some frequencies. </DIV>
<DIV> </DIV>
<DIV>This is exactly what I have to do now. I have to compute FFT of each lign of my 2D image and then, delete negative frequencies. But I don't know how to do it. Can you advice me? I'm really lost.</DIV>
<DIV> </DIV>
<DIV>Thanks for help,</DIV>
<DIV> </DIV>
<DIV>Isabelle</DIV>
<DIV> </DIV>
<DIV><A title="[Insight-users] help on the FFT and FFT Inverse" href="mailto:insight-users%40itk.org?Subject=%5BInsight-users%5D%20help%20on%20the%20FFT%20and%20FFT%20Inverse&In-Reply-To=">remi.charrier at cpe.fr </A><BR><I>Wed Apr 13 17:39:34 EDT 2005</I>
<P>
<HR>
<!--beginarticle--><PRE>hi all,
I try to use the itk FFT and its inverse to delete some frequencies in an
image
but the itk filters seem to not work.
To know what is not working, I tried to apply the FFT to my image and just
after I apply the FFT inverse to the result. It should give me the same image
than the initial one, but it does not.
I am using
#include "itkVnlFFTRealToComplexConjugateImageFilter.h"
and
#include "itkVnlFFTComplexConjugateToRealImageFilter.h"
Does someone know why it is not working or what I should do to make it work?
Thanks
remi charrier
</PRE></DIV><p>
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