[Insight-users] FFT

[Julien Jomier]

Isabelle,

you need to add:

   #define USE_FFTWD 1

before including itkFFTWRealToComplexConjugateImageFilter.h in your code

Hope that helps,

Julien

Renaud Isabelle wrote:
> Hi,
>  
> It's still concerning how to use FFTW witk ITK.
>  
> Before, I was using Microsoft Visual C++ 6.0 whose compilator was buggy 
> to build fftw librairies. Since today, I have Microsoft Visual C++ 7.1. 
> So I downloaded from the official website and build without problem the 
> FFTW library (I got my *fftwd.lib* built with MSVC7.1).
>  
> Then I have to rebuild ITK and VTK with CMake and MSVC7.1.
>  
> As building ITK 2.2 witk CMake, I set *USE_FFTWD to ON*. I have no error 
> when compiling. So now, I supposed that I could use 
> itkFFTWRealToComplexImageFilter in my own project. However, introducing 
> the instruction "typedef 
> itk::FFTWRealToComplexConjugateImageFilter<double, 2> FFTFilter; " in my 
> code still generates an error: 
> *"FFTWRealToComplexComplexConjugateImageFilter is not a member of ITK"*. 
> *What do I have to do to make it a member of ITK???? Am I missing a step? *
>  
>  
> - BTW, I would like to say that I tried another ways to compute my FFT 
> (with Numerical Recipes and Vnl) but it didn't work (zero padding caused 
> wrap problems and Vnl ifft computed module ). That is why I have to 
> insist. Actually, I make my boss buy Microsoft Visual C++ 7.1 software 
> in order to use itkFFTW, and it is still not working. I really need help.
>  
> Isabelle
>  
>  
>  
> 
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