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[FrontAlgorithms.git] / tests / image / Dijkstra / ExtractAxis.cxx

diff --git a/tests/image/Dijkstra/ExtractAxis.cxx b/tests/image/Dijkstra/ExtractAxis.cxx
new file mode 100644 (file)
index 0000000..d9eb7ad
--- /dev/null
+++ b/tests/image/Dijkstra/ExtractAxis.cxx
@@ -0,0 +1,80 @@
+// =========================================================================
+// @author Leonardo Florez Valencia
+// @email florez-l@javeriana.edu.co
+// =========================================================================
+
+#include <itkImage.h>
+#include <itkImageFileReader.h>
+#include <fpa/Common/Image/PolyLineParametricPathWriter.h>
+#include <fpa/Filters/Image/ExtractAxis.h>
+
+// -------------------------------------------------------------------------
+const unsigned int Dim = 2;
+typedef unsigned char TPixel;
+typedef float         TScalar;
+typedef itk::Image< TPixel, Dim > TImage;
+
+// -------------------------------------------------------------------------
+int main( int argc, char* argv[] )
+{
+  // Get arguments
+  if( argc < 3 )
+  {
+    std::cerr
+      << "Usage: " << argv[ 0 ]
+      << " input_image output_axis [seeds]"
+      << std::endl;
+    return( 1 );
+
+  } // fi
+  std::string input_image_filename = argv[ 1 ];
+  std::string output_path_filename = argv[ 2 ];
+
+  // Read image
+  typedef itk::ImageFileReader< TImage > TImageReader;
+  TImageReader::Pointer input_image_reader = TImageReader::New( );
+  input_image_reader->SetFileName( input_image_filename );
+
+  // Prepare filter
+  typedef fpa::Filters::Image::ExtractAxis< TImage, TScalar > TFilter;
+  TFilter::Pointer filter = TFilter::New( );
+  filter->SetInput( input_image_reader->GetOutput( ) );
+
+  // Get all seeds
+  for( int i = 3; i < argc; i += Dim )
+  {
+    TImage::IndexType seed;
+    for( int j = 0; j < Dim; ++j )
+      if( i + j < argc )
+        seed[ j ] = std::atoi( argv[ i + j ] );
+    filter->AddSeed( seed );
+    if( i == 3 )
+      filter->SetStartIndex( seed );
+    else if( i == 4 )
+      filter->SetEndIndex( seed );
+
+  } // rof
+
+  // Execute filter
+  filter->Update( );
+
+  // Save results
+  typedef fpa::Common::Image::PolyLineParametricPathWriter< TFilter::TPath > TPathWriter;
+  TPathWriter::Pointer path_writer = TPathWriter::New( );
+  path_writer->SetInput( filter->GetOutput( ) );
+  path_writer->SetFileName( output_path_filename );
+
+  try
+  {
+    path_writer->Update( );
+  }
+  catch( std::exception& err )
+  {
+    std::cerr << "Error caught: " << err.what( ) << std::endl;
+    return( 1 );
+
+  } // yrt
+  return( 0 );
+}
+
+// eof - $RCSfile$