SphinxExamples/src/Filtering/ImageFusion/OverlayLabelMapOnTopOfAnImage/Code.cxx

#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkLabelObject.h"
#include "itkLabelMap.h"
#include "itkLabelImageToLabelMapFilter.h"
#include "itkLabelMapOverlayImageFilter.h"

int main( int argc, char* argv[] )
{
  if( argc != 4 )
    {
    std::cerr << "Usage: "<< std::endl;
    std::cerr << argv[0];
    std::cerr << " <InputFileName> <LabelMap> <OutputFileName>";
    std::cerr << std::endl;
    return EXIT_FAILURE;
    }

  const char * inputFileName = argv[1];
  const char * labelFileName = argv[2];
  const char * outputFileName = argv[3];

  const unsigned int Dimension = 2;

  typedef unsigned char                      PixelType;
  typedef itk::Image< PixelType, Dimension > ImageType;

  typedef itk::ImageFileReader< ImageType >  ReaderType;
  ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName( inputFileName );

  typedef PixelType LabelType;
  typedef itk::LabelObject< LabelType, Dimension > LabelObjectType;
  typedef itk::LabelMap< LabelObjectType > LabelMapType;

  ReaderType::Pointer labelReader = ReaderType::New();
  labelReader->SetFileName( labelFileName );

  typedef itk::LabelImageToLabelMapFilter< ImageType, LabelMapType > ConverterType;
  ConverterType::Pointer converter = ConverterType::New();
  converter->SetInput( labelReader->GetOutput() );

  typedef itk::LabelMapOverlayImageFilter< LabelMapType, ImageType > FilterType;
  FilterType::Pointer filter = FilterType::New();
  filter->SetInput( converter->GetOutput() );
  filter->SetFeatureImage( reader->GetOutput() );
  filter->SetOpacity( 0.5 );

  typedef itk::ImageFileWriter< FilterType::OutputImageType > WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName( outputFileName );
  writer->SetInput( filter->GetOutput() );
  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & error )
    {
    std::cerr << "Error: " << error << std::endl;
    return EXIT_FAILURE;
    }

  return EXIT_SUCCESS;
}