Display ITK Image#
Synopsis#
Display an ITK iamge.
Results#
Note
Help Wanted Implementation of Results for sphinx examples containing this message. Reconfiguration of CMakeList.txt may be necessary. Write An Example <https://itk.org/ITKExamples/Documentation/Contribute/WriteANewExample.html>
Code#
C++#
#include <itkImage.h>
#include <itkImageFileReader.h>
#include <itkImageToVTKImageFilter.h>
#include "vtkVersion.h"
#include "vtkImageViewer.h"
#include "vtkImageMapper3D.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSmartPointer.h"
#include "vtkImageActor.h"
#include "vtkInteractorStyleImage.h"
#include "vtkRenderer.h"
#include "itkRGBPixel.h"
int
main(int argc, char * argv[])
{
if (argc < 2)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile" << std::endl;
return EXIT_FAILURE;
}
using ImageType = itk::Image<itk::RGBPixel<unsigned char>, 2>;
using ConnectorType = itk::ImageToVTKImageFilter<ImageType>;
auto connector = ConnectorType::New();
const auto input = itk::ReadImage<ImageType>(argv[1]);
connector->SetInput(input);
vtkSmartPointer<vtkImageActor> actor = vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
actor->SetInput(connector->GetOutput());
#else
connector->Update();
actor->GetMapper()->SetInputData(connector->GetOutput());
#endif
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
renderer->AddActor(actor);
renderer->ResetCamera();
vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New();
renderWindowInteractor->SetInteractorStyle(style);
renderWindowInteractor->SetRenderWindow(renderWindow);
renderWindowInteractor->Initialize();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
Classes demonstrated#
-
template<typename TInputImage>
class ImageToVTKImageFilter : public itk::ProcessObject Converts an ITK Image into a VTK image and plugs a ITK data pipeline to a VTK data pipeline.
This class puts together VTKImageExport and vtkImageImport objects. It takes care of the details related to the connection of ITK and VTK pipelines. The User will perceive this filter as an adaptor to which an itk::Image can be plugged as input and a vtkImage is produced as output.
