#include <ctime>
#include <iostream>
#include <string>

#include <itkImage.h>
#include <itkImageFileReader.h>
#include <itkImageFileWriter.h>
#include <itkHausdorffDistanceImageFilter.h>

// -------------------------------------------------------------------------
const unsigned int Dim = 3;
typedef unsigned short                 TPixel;
typedef float                          TScalar;
typedef itk::Image< TPixel, Dim >      TImage;
typedef itk::ImageFileReader< TImage > TImageReader;
typedef itk::HausdorffDistanceImageFilter< TImage, TImage > TDistance;

// -------------------------------------------------------------------------
int main( int argc, char* argv[] )
{
  if( argc < 3 )
  {
    std::cerr
      << "Usage: " << argv[ 0 ]
      << " first_image second_image"
      << std::endl;
    return( 1 );

  } // fi
  std::string first_image_fn = argv[ 1 ];
  std::string second_image_fn = argv[ 2 ];

  // Read image
  TImageReader::Pointer first_image_reader = TImageReader::New( );
  TImageReader::Pointer second_image_reader = TImageReader::New( );
  first_image_reader->SetFileName( first_image_fn );
  second_image_reader->SetFileName( second_image_fn );
  try
  {
    first_image_reader->Update( );
    second_image_reader->Update( );
  }
  catch( itk::ExceptionObject& err )
  {
    std::cerr << "Error caught: " << err << std::endl;
    return( 1 );

  } // yrt

  TDistance::Pointer distance = TDistance::New( );
  distance->SetInput1( first_image_reader->GetOutput( ) );
  distance->SetInput2( second_image_reader->GetOutput( ) );
  distance->Update( );
  std::cout << "Hausdorff distance = " << distance->GetHausdorffDistance( ) << std::endl;

  return( 0 );
}

// eof - $RCSfile$