[ITK-users] Resampler to itk::image

[AR_univr]

Hi,
I'm having problems to convert Resampler Output to itk::Image .
Here a snippet of what i'm doing :

    const     unsigned int   ImageDimension = 3;
    typedef   unsigned char  PixelType;
    typedef   itk::Image< PixelType, ImageDimension > InputImageType;
    typedef   itk::ResampleImageFilter< InputImageType,     InputImageType 
>  ResamplerType;
    . . .
    InputImageType::Pointer inputImage =  . . .
     
    ResamplerType::Pointer resampler = ResamplerType::New();
    InterpolatorType::Pointer interpolator = InterpolatorType::New();
    resampler->SetInterpolator(interpolator);
    InputImageType::SpacingType spacing = inputImage->GetSpacing();
    InputImageType::PointType   origin = inputImage->GetOrigin();
    InputImageType::DirectionType direction = inputImage->GetDirection();
    InputImageType::RegionType region = inputImage->GetBufferedRegion();
    InputImageType::SizeType   size = region.GetSize();
     
    resampler->SetOutputSpacing(spacing);
    resampler->SetOutputDirection(direction);
    resampler->SetOutputOrigin(origin);
    resampler->SetSize(size);
    resampler->SetTransform(tps);
     
    resampler->SetOutputStartIndex(region.GetIndex());
    resampler->SetInput(inputImage);
     
    std::cout << "[resampler] Written Origin   : " <<
resampler->GetOutputOrigin()[0] << ", " << resampler->GetOutputOrigin()[1]
<< ", " << resampler->GetOutputOrigin()[2] << std::endl;
    std::cout << "[resampler] Written Spacing  : " <<
resampler->GetOutputSpacing()[0] << ", " << resampler->GetOutputSpacing()[1]
<< ", " << resampler->GetOutputSpacing()[2] << std::endl;        std::cout
<< "[resampler] size : " << resampler->GetSize() << std::endl;
    std::cout << "[resampler] transform : " << resampler->GetTransform() <<
std::endl;
    std::cout << "[resampler] num of outs : " <<
resampler->GetNumberOfOutputs() << std::endl;
    std::cout << "[resampler] Written Direction: \n" <<
resampler->GetOutputDirection() << std::endl;
     
     
Up to here i have the values, and it seems it's working.
But when i do

   InputImageType::Pointer output = resampler->GetOutput();

output is empty, and i dont know why... Am i missing something?

any help would be appreciated

Thanks !

Andrea 



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