[vtkusers] Convert vtkImageData to itk Image

[Jothy]

 Hi all,

I am trying to convert a vtkImageData into a itk image. I tried the
following as given in the itk examples wiki.

typedef itk::Image<float, 2> ImageType;

typedef itk::VTKImageToImageFilter<ImageType> VTKImageToImageType;

VTKImageToImageType::Pointer vtkImageToImageFilter = VTKImageToImageType::New();

vtkImageToImageFilter->SetInput(inputVTKImage);

vtkImageToImageFilter->Update();

 But the program crashes. I found in the users list that
VTKImageToImageFilter is not supposed to be used directly. I am new to
itk and it seems to be highly templated.
I am a novice new c++ user to decipher the itk templates fully. Is
there any easy to follow example on this?
Thanks

Jothy
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