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 < 6 )
  22   {
  23     std::cerr
  24       << "Usage: " << argv[ 0 ]
  25       << " input_image labels_image output_image output_costs"
  26       << " 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 beta = std::atof( argv[ 5 ] );
  36
  37   // Read image
  38   TInputImage::Pointer image;
  39   std::string err0 = fpa::tests::image::Read( image, input_image_filename );
  40   if( err0 != "" )
  41   {
  42     std::cerr << "Error caught: " << err0 << std::endl;
  43     return( 1 );
  44
  45   } // fi
  46
  47   // Read label
  48   TLabelImage::Pointer labels;
  49   std::string err1 = fpa::tests::image::Read( labels, labels_image_filename );
  50   if( err1 != "" )
  51   {
  52     std::cerr << "Error caught: " << err1 << std::endl;
  53     return( 1 );
  54
  55   } // fi
  56
  57   // Prepare weight
  58   TWeight::Pointer weight = TWeight::New( );
  59   weight->SetBeta( beta );
  60
  61   // Prepare filter
  62   TFilter::Pointer filter = TFilter::New( );
  63   filter->SetInput( image );
  64   filter->SetWeightFunction( weight );
  65   filter->SetLabels( labels );
  66
  67   // Execute filter
  68   try
  69   {
  70     filter->Update( );
  71   }
  72   catch( std::exception& err )
  73   {
  74     std::cerr << "Error caught: " << err.what( ) << std::endl;
  75     return( 1 );
  76
  77   } // yrt
  78
  79   // Save results
  80   std::string err2 =
  81     fpa::tests::image::Write( filter->GetMarks( ), output_image_filename );
  82   std::string err3 =
  83     fpa::tests::image::Write( filter->GetOutput( ), output_costs_filename );
  84   if( err2 != "" ) std::cerr << "Error caught: " << err2 << std::endl;
  85   if( err3 != "" ) std::cerr << "Error caught: " << err3 << std::endl;
  86
  87   return( 0 );
  88 }
  89
  90 // eof - $RCSfile$