tests/image/RandomWalker.cxx

   1 #include "BaseFunctions.h"
   2 #include <itkImage.h>
   3 #include <fpa/Image/RandomWalker.h>
   4 #include <fpa/Image/Functors/Dijkstra/Gaussian.h>
   5
   6 // -------------------------------------------------------------------------
   7 const unsigned int Dim = 2;
   8 typedef short         TPixel;
   9 typedef unsigned char TLabel;
  10 typedef float         TScalar;
  11
  12 typedef itk::Image< TPixel, Dim >                                    TInputImage;
  13 typedef itk::Image< TLabel, Dim >                                    TLabelImage;
  14 typedef fpa::Image::RandomWalker< TInputImage, TLabelImage, TScalar >    TFilter;
  15 typedef fpa::Image::Functors::Dijkstra::Gaussian< TInputImage, TScalar > TWeight;
  16
  17 // -------------------------------------------------------------------------
  18 int main( int argc, char* argv[] )
  19 {
  20   // Get arguments
  21   if( argc < 7 )
  22   {
  23     std::cerr
  24       << "Usage: " << argv[ 0 ]
  25       << " input_image labels_image output_image output_costs"
  26       << " alpha beta"
  27       << std::endl;
  28     return( 1 );
  29
  30   } // fi
  31   std::string input_image_filename = argv[ 1 ];
  32   std::string labels_image_filename = argv[ 2 ];
  33   std::string output_image_filename = argv[ 3 ];
  34   std::string output_costs_filename = argv[ 4 ];
  35   double alpha = std::atof( argv[ 5 ] );
  36   double beta = std::atof( argv[ 6 ] );
  37
  38   // Read image
  39   TInputImage::Pointer image;
  40   std::string err0 = fpa::tests::image::Read( image, input_image_filename );
  41   if( err0 != "" )
  42   {
  43     std::cerr << "Error caught: " << err0 << std::endl;
  44     return( 1 );
  45
  46   } // fi
  47
  48   // Read label
  49   TLabelImage::Pointer labels;
  50   std::string err1 = fpa::tests::image::Read( labels, labels_image_filename );
  51   if( err1 != "" )
  52   {
  53     std::cerr << "Error caught: " << err1 << std::endl;
  54     return( 1 );
  55
  56   } // fi
  57
  58   // Prepare weight
  59   TWeight::Pointer weight = TWeight::New( );
  60   weight->SetAlpha( alpha );
  61   weight->SetBeta( beta );
  62
  63   // Prepare filter
  64   TFilter::Pointer filter = TFilter::New( );
  65   filter->SetInput( image );
  66   filter->SetWeightFunction( weight );
  67   filter->SetLabels( labels );
  68
  69   // Execute filter
  70   try
  71   {
  72     filter->Update( );
  73   }
  74   catch( std::exception& err )
  75   {
  76     std::cerr << "Error caught: " << err.what( ) << std::endl;
  77     return( 1 );
  78
  79   } // yrt
  80
  81   // Save results
  82   std::string err2 =
  83     fpa::tests::image::Write( filter->GetMarks( ), output_image_filename );
  84   std::string err3 =
  85     fpa::tests::image::Write( filter->GetOutput( ), output_costs_filename );
  86   if( err2 != "" ) std::cerr << "Error caught: " << err2 << std::endl;
  87   if( err3 != "" ) std::cerr << "Error caught: " << err3 << std::endl;
  88
  89   return( 0 );
  90 }
  91
  92 // eof - $RCSfile$