tests/image/RegionGrow/Tautology.cxx

   1 // =========================================================================
   2 // @author Leonardo Florez Valencia
   3 // @email florez-l@javeriana.edu.co
   4 // =========================================================================
   5
   6 #include <itkImage.h>
   7 #include <itkImageFileWriter.h>
   8 #include <fpa/Filters/Image/RegionGrow.h>
   9 #include <fpa/Functors/RegionGrow/Tautology.h>
  10
  11 // -------------------------------------------------------------------------
  12 const unsigned int Dim = 2;
  13 typedef unsigned char  TPixel;
  14 typedef unsigned short TMark;
  15 typedef itk::Image< TPixel, Dim > TImage;
  16
  17 // -------------------------------------------------------------------------
  18 int main( int argc, char* argv[] )
  19 {
  20   // Get arguments
  21   if( argc < 5 )
  22   {
  23     std::cerr
  24       << "Usage: " << argv[ 0 ]
  25       << " output_image output_marks size stop [seeds]"
  26       << std::endl;
  27     return( 1 );
  28
  29   } // fi
  30   std::string output_image_filename = argv[ 1 ];
  31   std::string output_marks_filename = argv[ 2 ];
  32   TImage::SizeType size;
  33   size.Fill( std::atoi( argv[ 3 ] ) );
  34   bool stop = ( argv[ 4 ][ 0 ] == '1' );
  35
  36   // Create image
  37   TImage::Pointer image = TImage::New( );
  38   image->SetRegions( size );
  39   image->Allocate( );
  40   image->FillBuffer( TPixel( 0 ) );
  41
  42   // Prepare predicate
  43   typedef fpa::Functors::RegionGrow::Tautology< TPixel > TPredicate;
  44   TPredicate::Pointer predicate = TPredicate::New( );
  45
  46   // Prepare filter
  47   typedef fpa::Filters::Image::RegionGrow< TImage, TImage, TMark > TFilter;
  48   TFilter::Pointer filter = TFilter::New( );
  49   filter->SetInput( image );
  50   filter->SetPredicate( predicate );
  51   filter->SetInsideValue( std::numeric_limits< TPixel >::max( ) );
  52   filter->SetOutsideValue( TPixel( 0 ) );
  53   filter->SetStopAtOneFront( stop );
  54
  55   // Get all seeds
  56   for( int i = 5; i < argc; i += Dim )
  57   {
  58     TImage::IndexType seed;
  59     for( int j = 0; j < Dim; ++j )
  60       if( i + j < argc )
  61         seed[ j ] = std::atoi( argv[ i + j ] );
  62     filter->AddSeed( seed );
  63
  64   } // rof
  65
  66   // Execute filter
  67   filter->Update( );
  68
  69   // Save results
  70   typedef itk::ImageFileWriter< TFilter::TOutputImage > TOutputWriter;
  71   TOutputWriter::Pointer output_writer = TOutputWriter::New( );
  72   output_writer->SetInput( filter->GetOutput( ) );
  73   output_writer->SetFileName( output_image_filename );
  74
  75   typedef itk::ImageFileWriter< TFilter::TMarksImage > TMarksWriter;
  76   TMarksWriter::Pointer marks_writer = TMarksWriter::New( );
  77   marks_writer->SetInput( filter->GetMarks( ) );
  78   marks_writer->SetFileName( output_marks_filename );
  79
  80   try
  81   {
  82     output_writer->Update( );
  83     marks_writer->Update( );
  84   }
  85   catch( std::exception& err )
  86   {
  87     std::cerr << "Error caught: " << err.what( ) << std::endl;
  88     return( 1 );
  89
  90   } // yrt
  91
  92   return( 0 );
  93 }
  94
  95 // eof - $RCSfile$