[vtkusers] problem in combining two mhd images

[Raviteja, Allaparthi]

Hi,
I am new to VTK and I have a problem in combining two "mhd" images . The code and the error are as follows.
#include <vtkMetaImageReader.h>
#include <vtkImageData.h>
#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkImageBlend.h>
#include <string>
int main ( int argc, char* argv[] )
{
  // Parse input arguments
  if ( argc != 3 )
    {
    std::cerr << "Usage: " << argv[0]
              << " Input1Filename Input2Filename" << std::endl;
    return EXIT_FAILURE;
    }

  std::string input1Filename = argv[1];
  std::string input2Filename = argv[2];
 // Read the images
  vtkSmartPointer<vtkMetaImageReader> MetaImageReader1 =
    vtkSmartPointer<vtkMetaImageReader>::New();
MetaImageReader1->SetFileName ( input1Filename.c_str() );
 vtkSmartPointer<vtkMetaImageReader> MetaImageReader2 =
    vtkSmartPointer<vtkMetaImageReader>::New();
MetaImageReader2->SetFileName ( input2Filename.c_str() );
  // Combine the images (blend takes multiple connections on the 0th input port)
  vtkSmartPointer<vtkImageBlend> blend =
    vtkSmartPointer<vtkImageBlend>::New();
  blend->AddInputConnection(MetaImageReader1->GetOutputPort());
  blend->AddInputConnection(MetaImageReader2->GetOutputPort());
  blend->SetOpacity(0,.5);
  blend->SetOpacity(1,.5);
 // Display the result
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
 vtkSmartPointer<vtkImageViewer2> imageViewer =
    vtkSmartPointer<vtkImageViewer2>::New();
  imageViewer->SetInputConnection(blend->GetOutputPort());
  imageViewer->SetupInteractor(renderWindowInteractor);
  imageViewer->GetRenderer()->ResetCamera();
  imageViewer->GetRenderer()->SetBackground(1,0,0); //red
 renderWindowInteractor->Initialize();
  renderWindowInteractor->Start();
 return EXIT_SUCCESS;
}
ERROR: In C:\VTK-5.10.0\VTK\Imaging\vtkImageBlend.cxx, line 913
VTKImageBlend[00B6FD18]:Execute:input1 ScalarType [11],must match output ScalarType [5]
How do I resolve the above error?  I am attaching the two input "mhd" files. Could Someone Please help me out.
Thank you.
Regards,
Ravi Teja.



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