[C++] 3D imaging using vtk v.2

void MainWindow::displayOriImage(PointerImage3D img)
{
    typedef itk::ImageToVTKImageFilter<Image3DType> TemplatedConnectorType;
    TemplatedConnectorType::Pointer con = TemplatedConnectorType::New();
    con->SetInput(img);
    try {
        con->Update();
    } catch (itk::ExceptionObject &e)
    {
        cerr << e << endl;
    }
    Image3DType::SizeType size = img->GetLargestPossibleRegion().GetSize();
    Image3DType::IndexType start = img->GetLargestPossibleRegion().GetIndex();

    vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
    vtkSmartPointer<vtkRenderWindow> wnd = vtkSmartPointer<vtkRenderWindow>::New();
    vtkSmartPointer<vtkRenderWindowInteractor> wndInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();

    wnd->SetSize(520,520);
    wnd->AddRenderer(renderer);
    wndInteractor->SetRenderWindow(wnd);

    vtkSmartPointer<vtkProperty> property = vtkSmartPointer<vtkProperty>::New();
    vtkSmartPointer<vtkCellPicker> picker = vtkSmartPointer<vtkCellPicker>::New();
    picker->SetTolerance(0.005);

    vtkSmartPointer<vtkImagePlaneWidget> xPlane = vtkSmartPointer<vtkImagePlaneWidget>::New();
    vtkSmartPointer<vtkImagePlaneWidget> yPlane = vtkSmartPointer<vtkImagePlaneWidget>::New();
    vtkSmartPointer<vtkImagePlaneWidget> zPlane = vtkSmartPointer<vtkImagePlaneWidget>::New();

    xPlane->DisplayTextOn();
    xPlane->SetInputData(con->GetOutput());
    xPlane->SetPlaneOrientationToXAxes();
    xPlane->SetSliceIndex(0);
    xPlane->SetPicker(picker);
    xPlane->RestrictPlaneToVolumeOn();
    xPlane->GetPlaneProperty()->SetColor(1.0,0.0,0.0);
    xPlane->SetTexturePlaneProperty(property);
    xPlane->SetDefaultRenderer(renderer);
    xPlane->SetResliceInterpolateToNearestNeighbour();

    yPlane->DisplayTextOn();
    yPlane->SetInputData(con->GetOutput());
    yPlane->SetPlaneOrientationToYAxes();
    yPlane->SetSliceIndex(0);
    yPlane->SetPicker(picker);
    yPlane->RestrictPlaneToVolumeOn();
    yPlane->GetPlaneProperty()->SetColor(0.0,1.0,0.0);
    yPlane->SetTexturePlaneProperty(property);
    yPlane->SetDefaultRenderer(renderer);
    yPlane->SetLookupTable(xPlane->GetLookupTable());

    zPlane->DisplayTextOn();
    zPlane->SetInputData(con->GetOutput());
    zPlane->SetPlaneOrientationToZAxes();
    zPlane->SetSliceIndex(0);
    zPlane->SetPicker(picker);
    zPlane->RestrictPlaneToVolumeOn();
    zPlane->GetPlaneProperty()->SetColor(0.0,0.0,1.0);
    zPlane->SetTexturePlaneProperty(property);
    zPlane->SetDefaultRenderer(renderer);
    zPlane->SetLookupTable(xPlane->GetLookupTable());

    xPlane->SetInteractor(wndInteractor);
    xPlane->On();
    xPlane->InteractionOn();

    yPlane->SetInteractor(wndInteractor);
    yPlane->On();
    yPlane->InteractionOn();

    zPlane->SetInteractor(wndInteractor);
    zPlane->On();
    zPlane->InteractionOn();

    renderer->SetBackground(0.4392, 0.5020, 0.5647);

    vtkSmartPointer<vtkImageResliceMapper> mapper = vtkSmartPointer<vtkImageResliceMapper>::New();
    vtkSmartPointer<vtkImageActor> actor = vtkSmartPointer<vtkImageActor>::New();

    actor->SetMapper(mapper);
    mapper->SetInputData(con->GetOutput());
    renderer->AddActor(actor);

    renderer->ResetCamera();
    wnd->Render();
    wndInteractor->Start();
}