[vtkusers] Volume rendering with *.mhd

[Urvoas, Paul]

Hi,
I would like to visualize volume with a vtk volume rendering. With that code, there is no error but we don't see a volume in the window, only a black slice... Maybe I have to change the rendering mode to visualize in 3d instead of in 2d? Then, how can I choose the range of the color (intensity) I want to visualize in the window ?

Kind regards,
Paul


int main() {

   typedef itk::Image<unsigned char, 3> ImageType;
   // Declare a reader
   typedef itk::ImageFileReader< ImageType > VolumeReaderType;
   VolumeReaderType::Pointer reader = VolumeReaderType::New();

   // Set the name of the file to read
   reader->SetFileName( "FILTER.mhd" );

   // See if the file can be read - "try" otherwise program will
   //   mysteriously exit on failure in the Object factory
   try{reader->Update();}
   catch( ... ){
     std::cout << "Problems reading file format" << std::endl;
     return  EXIT_FAILURE;
   }

   typedef itk::ImageToVTKImageFilter< ImageType>  ConnectorType;
   ConnectorType::Pointer connector = ConnectorType::New();
   connector->SetInput( reader->GetOutput() );

   // Add image to an vtk actor
    vtkImageActor * imageActor = vtkImageActor::New();
    imageActor->SetInput(connector->GetOutput());

    //Add that actor to the renderer
    vtkRenderer *ren1 = vtkRenderer::New();
    ren1->AddActor(imageActor);
    ren1->SetBackground(0.1, 0.2, 0.4);

    //Create a render window
    vtkRenderWindow *renWin = vtkRenderWindow::New();
    renWin->AddRenderer(ren1);
    renWin->SetSize(600, 600);

    ren1->ResetCamera();
    ren1->GetActiveCamera()->Zoom(1.5);
    renWin->Render();

     //Create an interactor and associate it to the render window
    vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
    iren->SetRenderWindow(renWin);

    //Define the interacting style
    vtkInteractorStyleTrackballCamera *style =  vtkInteractorStyleTrackballCamera::New();
    iren->SetInteractorStyle(style);

    //Start to interact
    iren->Initialize();
    iren->Start();

 }

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