[Insight-users] FFTW librairies not built with ITK

[Renaud Isabelle]

Hi,
   
  - You are right Julien: 
  #define USE_FFTWD 1
  #include "itkFFTWRealToComplexConjugateImageFilter.h" removes the error that FFTWRealToConjugateComplexImageFilter is not a member of ITK. 
   
  However, it is still not simple for me. Now, I have this kind of linking errors: 
   
  "error LNK2019: symbole externe non résolu _fftw_destroy_plan référencé for
    fftw_destroy_plan
  fftwf_destroy_plan
  fftw_execute
  fftw_plan_dft_r2c
  fftw_plan_dft_r2c_1d
  fftw_plan_dft_r2c_2d
  fftw_plan_dft_r2c_3d"
   
  I believe that, maybe, ITK fftw librairies have not been built. Are there some ITK fftw librairies to build? Or do I have just to mention where are fftw.h and fftwd.lib as configuring ITK with CMake? As looking at FindFFTW.cmake, I find words about "libfftw.a-->double, libfftwf.a-->float": are there the names of ITK librairies for FFTW? If so, I made a search for these files in my ITK bin directory, and I didn't find them..... 
   
  Isabelle
   
   
   
   

Julien Jomier <jjomier at cs.unc.edu> a écrit :
  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 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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