[Insight-users] Convert vtkImageData to itk Image

[John Drescher]

On Wed, Sep 7, 2011 at 12:27 PM, Jothy <jothybasu at gmail.com> wrote:
> 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?
>

I use this template exactly like you do (except for 3d unsigned short images):

typedef quint16 MaskPixelType;
typedef itk::Image< MaskPixelType,  3 >						MaskImageType;

m_pVTKToITK = itk::VTKImageToImageFilter<MaskImageType>::New();
m_pVTKToITK->SetInput(pMask->GetOutput());
m_pVTKToITK->Update();

John