tests/image/Dijkstra/Invert.cxx

   1 // =========================================================================
   2 // @author Leonardo Florez Valencia
   3 // @email florez-l@javeriana.edu.co
   4 // =========================================================================
   5
   6 #include <itkImage.h>
   7 #include <itkImageFileReader.h>
   8 #include <itkImageFileWriter.h>
   9 #include <fpa/Filters/Image/Dijkstra.h>
  10 #include <fpa/Functors/Dijkstra/Invert.h>
  11
  12 // -------------------------------------------------------------------------
  13 const unsigned int Dim = 2;
  14 typedef unsigned char TInputPixel;
  15 typedef float         TOutputPixel;
  16 typedef itk::Image< TInputPixel, Dim >  TInputImage;
  17 typedef itk::Image< TOutputPixel, Dim > TOutputImage;
  18
  19 // -------------------------------------------------------------------------
  20 int main( int argc, char* argv[] )
  21 {
  22   // Get arguments
  23   if( argc < 7 )
  24   {
  25     std::cerr
  26       << "Usage: " << argv[ 0 ]
  27       << " input_image output_image output_marks output_mst alpha beta [seeds]"
  28       << std::endl;
  29     return( 1 );
  30
  31   } // fi
  32   std::string input_image_filename = argv[ 1 ];
  33   std::string output_image_filename = argv[ 2 ];
  34   std::string output_marks_filename = argv[ 3 ];
  35   std::string output_mst_filename = argv[ 4 ];
  36   double alpha = std::atof( argv[ 5 ] );
  37   double beta = std::atof( argv[ 6 ] );
  38
  39   // Read image
  40   typedef itk::ImageFileReader< TInputImage > TInputImageReader;
  41   TInputImageReader::Pointer input_image_reader = TInputImageReader::New( );
  42   input_image_reader->SetFileName( input_image_filename );
  43
  44   // Prepare weight functor
  45   typedef fpa::Functors::Dijkstra::Invert< TOutputPixel > TWeight;
  46   TWeight::Pointer weight = TWeight::New( );
  47   weight->SetAlpha( alpha );
  48   weight->SetBeta( beta );
  49
  50   // Prepare filter
  51   typedef fpa::Filters::Image::Dijkstra< TInputImage, TOutputImage > TFilter;
  52   TFilter::Pointer filter = TFilter::New( );
  53   filter->SetInput( input_image_reader->GetOutput( ) );
  54   filter->SetWeightFunction( weight );
  55
  56   // Get all seeds
  57   for( int i = 7; i < argc; i += Dim )
  58   {
  59     TInputImage::IndexType seed;
  60     for( int j = 0; j < Dim; ++j )
  61       if( i + j < argc )
  62         seed[ j ] = std::atoi( argv[ i + j ] );
  63     filter->AddSeed( seed );
  64
  65   } // rof
  66
  67   // Execute filter
  68   filter->Update( );
  69
  70   // Save results
  71   typedef itk::ImageFileWriter< TFilter::TOutputImage > TOutputWriter;
  72   TOutputWriter::Pointer output_writer = TOutputWriter::New( );
  73   output_writer->SetInput( filter->GetOutput( ) );
  74   output_writer->SetFileName( output_image_filename );
  75
  76   typedef itk::ImageFileWriter< TFilter::TMarksImage > TMarksWriter;
  77   TMarksWriter::Pointer marks_writer = TMarksWriter::New( );
  78   marks_writer->SetInput( filter->GetMarks( ) );
  79   marks_writer->SetFileName( output_marks_filename );
  80
  81   typedef itk::ImageFileWriter< TFilter::TMST > TMSTWriter;
  82   TMSTWriter::Pointer mst_writer = TMSTWriter::New( );
  83   mst_writer->SetInput( filter->GetMinimumSpanningTree( ) );
  84   mst_writer->SetFileName( output_mst_filename );
  85
  86   try
  87   {
  88     output_writer->Update( );
  89     marks_writer->Update( );
  90     mst_writer->Update( );
  91   }
  92   catch( std::exception& err )
  93   {
  94     std::cerr << "Error caught: " << err.what( ) << std::endl;
  95     return( 1 );
  96
  97   } // yrt
  98
  99   return( 0 );
 100 }
 101
 102 // eof - $RCSfile$