X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=tests%2Fimage%2FRandomWalker%2FGaussian.cxx;fp=tests%2Fimage%2FRandomWalker%2FGaussian.cxx;h=be6016e5c806edc9478d60a4a1d979853bce4ffa;hb=2047276c8f1a02432fbcc7014722d460d6c1e60f;hp=0000000000000000000000000000000000000000;hpb=3c639e5da479c7216a0a302ffa156ac6762caeed;p=FrontAlgorithms.git

diff --git a/tests/image/RandomWalker/Gaussian.cxx b/tests/image/RandomWalker/Gaussian.cxx
new file mode 100644
index 0000000..be6016e
--- /dev/null
+++ b/tests/image/RandomWalker/Gaussian.cxx
@@ -0,0 +1,94 @@
+// =========================================================================
+// @author Leonardo Florez Valencia
+// @email florez-l@javeriana.edu.co
+// =========================================================================
+
+#include <itkImage.h>
+#include <itkImageFileReader.h>
+#include <itkImageFileWriter.h>
+#include <fpa/Filters/Image/RandomWalker.h>
+#include <fpa/Functors/Dijkstra/Image/Gaussian.h>
+
+// -------------------------------------------------------------------------
+const unsigned int Dim = 2;
+typedef unsigned char TInputPixel;
+typedef unsigned char TInputLabel;
+typedef float         TOutputPixel;
+typedef itk::Image< TInputPixel, Dim >  TInputImage;
+typedef itk::Image< TInputLabel, Dim >  TInputLabelImage;
+typedef itk::Image< TOutputPixel, Dim > TOutputImage;
+
+// -------------------------------------------------------------------------
+int main( int argc, char* argv[] )
+{
+  // Get arguments
+  if( argc < 7 )
+  {
+    std::cerr
+      << "Usage: " << argv[ 0 ]
+      << " input_image input_labels output_image output_costs alpha beta"
+      << std::endl;
+    return( 1 );
+
+  } // fi
+  std::string input_image_filename = argv[ 1 ];
+  std::string input_labels_filename = argv[ 2 ];
+  std::string output_image_filename = argv[ 3 ];
+  std::string output_costs_filename = argv[ 4 ];
+  double alpha = std::atof( argv[ 5 ] );
+  double beta = std::atof( argv[ 6 ] );
+
+  // Read image
+  typedef itk::ImageFileReader< TInputImage > TInputImageReader;
+  TInputImageReader::Pointer input_image_reader = TInputImageReader::New( );
+  input_image_reader->SetFileName( input_image_filename );
+
+  // Read labels
+  typedef itk::ImageFileReader< TInputLabelImage > TInputLabelImageReader;
+  TInputLabelImageReader::Pointer input_labels_reader =
+    TInputLabelImageReader::New( );
+  input_labels_reader->SetFileName( input_labels_filename );
+
+  // Prepare weight functor
+  typedef fpa::Functors::Dijkstra::Image::Gaussian< TInputImage, TOutputPixel > TWeight;
+  TWeight::Pointer weight = TWeight::New( );
+  weight->SetAlpha( alpha );
+  weight->SetBeta( beta );
+
+  // Prepare filter
+  typedef fpa::Filters::Image::RandomWalker< TInputImage, TInputLabelImage, TOutputImage > TFilter;
+  TFilter::Pointer filter = TFilter::New( );
+  filter->SetInputImage( input_image_reader->GetOutput( ) );
+  filter->SetInputLabels( input_labels_reader->GetOutput( ) );
+  filter->SetWeightFunction( weight );
+
+  // Execute filter
+  filter->Update( );
+
+  // Save results
+  typedef itk::ImageFileWriter< TFilter::TOutputLabels > TOutputWriter;
+  TOutputWriter::Pointer output_writer = TOutputWriter::New( );
+  output_writer->SetInput( filter->GetOutputLabels( ) );
+  output_writer->SetFileName( output_image_filename );
+
+  typedef itk::ImageFileWriter< TFilter::TCostsImage > TCostsWriter;
+  TCostsWriter::Pointer costs_writer = TCostsWriter::New( );
+  costs_writer->SetInput( filter->GetOutputCosts( ) );
+  costs_writer->SetFileName( output_costs_filename );
+
+  try
+  {
+    output_writer->Update( );
+    costs_writer->Update( );
+  }
+  catch( std::exception& err )
+  {
+    std::cerr << "Error caught: " << err.what( ) << std::endl;
+    return( 1 );
+
+  } // yrt
+
+  return( 0 );
+}
+
+// eof - $RCSfile$