SphinxExamples/src/Filtering/Colormap/ApplyAColorMapToAnImage/Code.cxx

#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkRGBPixel.h"
#include "itkScalarToRGBColormapImageFilter.h"

int main( int argc, char* argv[] )
{
  if( argc != 3 )
    {
    std::cerr << "Usage: "<< std::endl;
    std::cerr << argv[0];
    std::cerr << "<InputFileName> <OutputFileName>";
    std::cerr << std::endl;
    return EXIT_FAILURE;
    }

  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( argv[1] );

  typedef itk::RGBPixel< unsigned char >        RGBPixelType;
  typedef itk::Image< RGBPixelType, Dimension > RGBImageType;

  typedef itk::ScalarToRGBColormapImageFilter< ImageType, RGBImageType>
    RGBFilterType;
  RGBFilterType::Pointer rgbfilter = RGBFilterType::New();
  rgbfilter->SetInput( reader->GetOutput() );
  rgbfilter->SetColormap( RGBFilterType::Hot );

  typedef  itk::ImageFileWriter< RGBImageType > WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName( argv[2] );
  writer->SetInput( rgbfilter->GetOutput() );

  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & error )
    {
    std::cerr << "Error: " << error << std::endl;
    return EXIT_FAILURE;
    }

  return EXIT_SUCCESS;
}