tests/image/Dijkstra/ExtractAxis.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 <fpa/Common/Image/PolyLineParametricPathWriter.h>
   9 #include <fpa/Filters/Image/ExtractAxis.h>
  10
  11 // -------------------------------------------------------------------------
  12 const unsigned int Dim = 2;
  13 typedef unsigned char TPixel;
  14 typedef float         TScalar;
  15 typedef itk::Image< TPixel, Dim > TImage;
  16
  17 // -------------------------------------------------------------------------
  18 int main( int argc, char* argv[] )
  19 {
  20   // Get arguments
  21   if( argc < 3 )
  22   {
  23     std::cerr
  24       << "Usage: " << argv[ 0 ]
  25       << " input_image output_axis [seeds]"
  26       << std::endl;
  27     return( 1 );
  28
  29   } // fi
  30   std::string input_image_filename = argv[ 1 ];
  31   std::string output_path_filename = argv[ 2 ];
  32
  33   // Read image
  34   typedef itk::ImageFileReader< TImage > TImageReader;
  35   TImageReader::Pointer input_image_reader = TImageReader::New( );
  36   input_image_reader->SetFileName( input_image_filename );
  37
  38   // Prepare filter
  39   typedef fpa::Filters::Image::ExtractAxis< TImage, TScalar > TFilter;
  40   TFilter::Pointer filter = TFilter::New( );
  41   filter->SetInput( input_image_reader->GetOutput( ) );
  42
  43   // Get all seeds
  44   for( int i = 3; i < argc; i += Dim )
  45   {
  46     TImage::IndexType seed;
  47     for( int j = 0; j < Dim; ++j )
  48       if( i + j < argc )
  49         seed[ j ] = std::atoi( argv[ i + j ] );
  50     filter->AddSeed( seed );
  51     if( i == 3 )
  52       filter->SetStartIndex( seed );
  53     else if( i == 4 )
  54       filter->SetEndIndex( seed );
  55
  56   } // rof
  57
  58   // Execute filter
  59   filter->Update( );
  60
  61   // Save results
  62   typedef fpa::Common::Image::PolyLineParametricPathWriter< TFilter::TPath > TPathWriter;
  63   TPathWriter::Pointer path_writer = TPathWriter::New( );
  64   path_writer->SetInput( filter->GetOutput( ) );
  65   path_writer->SetFileName( output_path_filename );
  66
  67   try
  68   {
  69     path_writer->Update( );
  70   }
  71   catch( std::exception& err )
  72   {
  73     std::cerr << "Error caught: " << err.what( ) << std::endl;
  74     return( 1 );
  75
  76   } // yrt
  77   return( 0 );
  78 }
  79
  80 // eof - $RCSfile$