]> Creatis software - FrontAlgorithms.git/blobdiff - appli/examples/example_Image_Dijkstra_EndPointDetection.cxx
Gaussian model estimator debugged
[FrontAlgorithms.git] / appli / examples / example_Image_Dijkstra_EndPointDetection.cxx
index 47585ad30327975306210ad1eb51fe2a5cd912c8..a334de3ae881a372578e7e999cc01d9315695d6f 100644 (file)
 #include <fpa/VTK/ImageMPR.h>
 #include <fpa/VTK/Image3DObserver.h>
 
-/*
-  #include <itkMinimumMaximumImageCalculator.h>
-  #include <itkInvertIntensityImageFilter.h>
-  #include <itkDanielssonDistanceMapImageFilter.h>
-  #include <itkImageFileWriter.h>
-
-  #include <vtkCamera.h>
-  #include <vtkImageActor.h>
-  #include <vtkInteractorStyleImage.h>
-  #include <vtkPointHandleRepresentation3D.h>
-  #include <vtkProperty.h>
-  #include <vtkRenderer.h>
-  #include <vtkRenderWindow.h>
-  #include <vtkRenderWindowInteractor.h>
-  #include <vtkSeedRepresentation.h>
-  #include <vtkSeedWidget.h>
-  #include <vtkSmartPointer.h>
-
-  #include <fpa/Image/Dijkstra.h>
-*/
+#include <fpa/IO/MinimumSpanningTreeWriter.h>
+#include <fpa/IO/UniqueValuesContainerWriter.h>
+#include <fpa/IO/MatrixValuesContainerWriter.h>
+
+#include <vtkCellArray.h>
+#include <vtkFloatArray.h>
+#include <vtkImageMarchingCubes.h>
+#include <vtkPoints.h>
+#include <vtkPolyData.h>
+#include <vtkSmartPointer.h>
 
 // -------------------------------------------------------------------------
 const unsigned int Dim = 3;
@@ -54,6 +44,9 @@ typedef itk::ImageToVTKImageFilter< TImage > TVTKInputImage;
 template< class I >
 void ReadImage( typename I::Pointer& image, const std::string& filename );
 
+template< class I >
+void SaveImage( const I* image, const std::string& filename );
+
 template< class I, class O >
 void DistanceMap(
   const typename I::Pointer& input, typename O::Pointer& output
@@ -62,16 +55,30 @@ void DistanceMap(
 // -------------------------------------------------------------------------
 int main( int argc, char* argv[] )
 {
-  if( argc < 2 )
+  if( argc < 9 )
   {
     std::cerr
-      << "Usage: " << argv[ 0 ]
-      << " input_image"
+      << "Usage: " << argv[ 0 ] << std::endl
+      << " input_image" << std::endl
+      << " output_distancemap" << std::endl
+      << " output_costmap" << std::endl
+      << " output_labels" << std::endl
+      << " output_minimum_spanning_tree" << std::endl
+      << " output_endpoints" << std::endl
+      << " output_bifurcations" << std::endl
+      << " output_branches" << std::endl
       << std::endl;
     return( 1 );
 
   } // fi
   std::string input_image_fn = argv[ 1 ];
+  std::string distancemap_fn = argv[ 2 ];
+  std::string output_costmap_fn = argv[ 3 ];
+  std::string output_labels_fn = argv[ 4 ];
+  std::string mst_output_fn = argv[ 5 ];
+  std::string endpoints_output_fn = argv[ 6 ];
+  std::string bifurcations_output_fn = argv[ 7 ];
+  std::string branches_output_fn = argv[ 8 ];
 
   // Read image
   TImage::Pointer input_image;
@@ -88,6 +95,7 @@ int main( int argc, char* argv[] )
     return( 1 );
 
   } // yrt
+
   TVTKInputImage::Pointer vtk_input_image = TVTKInputImage::New( );
   vtk_input_image->SetInput( input_image );
   vtk_input_image->Update( );
@@ -98,6 +106,13 @@ int main( int argc, char* argv[] )
   view.SetSize( 800, 800 );
   view.SetImage( vtk_input_image->GetOutput( ) );
 
+  vtkSmartPointer< vtkImageMarchingCubes > mc =
+    vtkSmartPointer< vtkImageMarchingCubes >::New( );
+  mc->SetInputData( vtk_input_image->GetOutput( ) );
+  mc->SetValue( 0, 1e-1 );
+  mc->Update( );
+  view.AddPolyData( mc->GetOutput( ), 1, 1, 1, 0.4 );
+
   // Allow some interaction and wait for, at least, one seed
   view.Render( );
   while( view.GetNumberOfSeeds( ) == 0 )
@@ -148,25 +163,183 @@ int main( int argc, char* argv[] )
     << std::difftime( end, start )
     << " s." << std::endl;
 
-  /* TODO
-  // Save final total cost map
-  itk::ImageFileWriter< TOutputImage >::Pointer output_image_writer =
-    itk::ImageFileWriter< TOutputImage >::New( );
-  output_image_writer->SetFileName( output_image_fn );
-  output_image_writer->SetInput( filter->GetOutput( ) );
-  try
+  // Outputs
+  const TFilter::TOutputImage* accumulated_costs = filter->GetOutput( );
+  const TFilter::TLabelImage* labeled_image = filter->GetLabelImage( );
+  const TFilter::TMinimumSpanningTree* mst = filter->GetMinimumSpanningTree( );
+  const TFilter::TUniqueVertices* endpoints = filter->GetEndPoints( );
+  const TFilter::TUniqueVertices* bifurcations = filter->GetBifurcations( );
+  const TFilter::TBranches* branches = filter->GetBranches( );
+  unsigned long nBranches = filter->GetNumberOfBranches( );
+
+  // Save outputs
+  SaveImage( dmap.GetPointer( ), distancemap_fn );
+  SaveImage( accumulated_costs, output_costmap_fn );
+  SaveImage( labeled_image, output_labels_fn );
+
+  fpa::IO::MinimumSpanningTreeWriter< TFilter::TMinimumSpanningTree >::Pointer
+    mst_writer =
+    fpa::IO::MinimumSpanningTreeWriter< TFilter::TMinimumSpanningTree >::New( );
+  mst_writer->SetInput( mst );
+  mst_writer->SetFileName( mst_output_fn );
+  mst_writer->Update( );
+
+  fpa::IO::UniqueValuesContainerWriter< TFilter::TUniqueVertices >::Pointer
+    endpoints_writer =
+    fpa::IO::UniqueValuesContainerWriter< TFilter::TUniqueVertices >::New( );
+  endpoints_writer->SetInput( endpoints );
+  endpoints_writer->SetFileName( endpoints_output_fn );
+  endpoints_writer->Update( );
+
+  fpa::IO::UniqueValuesContainerWriter< TFilter::TUniqueVertices >::Pointer
+    bifurcations_writer =
+    fpa::IO::UniqueValuesContainerWriter< TFilter::TUniqueVertices >::New( );
+  bifurcations_writer->SetInput( bifurcations );
+  bifurcations_writer->SetFileName( bifurcations_output_fn );
+  bifurcations_writer->Update( );
+
+  fpa::IO::MatrixValuesContainerWriter< TFilter::TBranches >::Pointer
+    branches_writer =
+    fpa::IO::MatrixValuesContainerWriter< TFilter::TBranches >::New( );
+  branches_writer->SetInput( branches );
+  branches_writer->SetFileName( branches_output_fn );
+  branches_writer->Update( );
+
+  // Show endpoints
+  vtkSmartPointer< vtkPoints > endpoints_points =
+    vtkSmartPointer< vtkPoints >::New( );
+  vtkSmartPointer< vtkCellArray > endpoints_cells =
+    vtkSmartPointer< vtkCellArray >::New( );
+  for(
+    TFilter::TUniqueVertices::ConstIterator epIt = endpoints->Begin( );
+    epIt != endpoints->End( );
+    ++epIt
+    )
   {
-    output_image_writer->Update( );
-  }
-  catch( itk::ExceptionObject& err )
+    TImage::PointType pnt;
+    input_image->TransformIndexToPhysicalPoint( *epIt, pnt );
+    endpoints_points->InsertNextPoint( pnt[ 0 ], pnt[ 1 ], pnt[ 2 ] );
+    endpoints_cells->InsertNextCell( 1 );
+    endpoints_cells->
+      InsertCellPoint( endpoints_points->GetNumberOfPoints( ) - 1 );
+
+  } // rof
+  vtkSmartPointer< vtkPolyData > endpoints_polydata =
+    vtkSmartPointer< vtkPolyData >::New( );
+  endpoints_polydata->SetPoints( endpoints_points );
+  endpoints_polydata->SetVerts( endpoints_cells );
+  view.AddPolyData( endpoints_polydata, 0, 0, 1, 1 );
+
+  // Show bifurcations
+  vtkSmartPointer< vtkPoints > bifurcations_points =
+    vtkSmartPointer< vtkPoints >::New( );
+  vtkSmartPointer< vtkCellArray > bifurcations_cells =
+    vtkSmartPointer< vtkCellArray >::New( );
+  for(
+    TFilter::TUniqueVertices::ConstIterator bfIt = bifurcations->Begin( );
+    bfIt != bifurcations->End( );
+    ++bfIt
+    )
   {
-    std::cerr
-      << "Error while writing image to " << output_image_fn << ": "
-      << err << std::endl;
-    return( 1 );
+    TImage::PointType pnt;
+    input_image->TransformIndexToPhysicalPoint( *bfIt, pnt );
+    bifurcations_points->InsertNextPoint( pnt[ 0 ], pnt[ 1 ], pnt[ 2 ] );
+    bifurcations_cells->InsertNextCell( 1 );
+    bifurcations_cells->
+      InsertCellPoint( bifurcations_points->GetNumberOfPoints( ) - 1 );
+
+  } // rof
+  vtkSmartPointer< vtkPolyData > bifurcations_polydata =
+    vtkSmartPointer< vtkPolyData >::New( );
+  bifurcations_polydata->SetPoints( bifurcations_points );
+  bifurcations_polydata->SetVerts( bifurcations_cells );
+  view.AddPolyData( bifurcations_polydata, 0, 1, 0, 1 );
+
+  // Show branches (simple and detailed)
+  vtkSmartPointer< vtkPoints > simple_branches_points =
+    vtkSmartPointer< vtkPoints >::New( );
+  vtkSmartPointer< vtkCellArray > simple_branches_cells =
+    vtkSmartPointer< vtkCellArray >::New( );
+
+  vtkSmartPointer< vtkPoints > detailed_branches_points =
+    vtkSmartPointer< vtkPoints >::New( );
+  vtkSmartPointer< vtkCellArray > detailed_branches_cells =
+    vtkSmartPointer< vtkCellArray >::New( );
+  vtkSmartPointer< vtkFloatArray > detailed_branches_scalars =
+    vtkSmartPointer< vtkFloatArray >::New( );
+
+  TFilter::TBranches::ConstIterator brIt = branches->Begin( );
+  for( ; brIt != branches->End( ); ++brIt )
+  {
+    // Branch's first point
+    TImage::PointType first_point;
+    input_image->TransformIndexToPhysicalPoint( brIt->first, first_point );
+    unsigned long first_id = simple_branches_points->GetNumberOfPoints( );
+    simple_branches_points->InsertNextPoint(
+      first_point[ 0 ], first_point[ 1 ], first_point[ 2 ]
+      );
+
+    TFilter::TBranches::ConstRowIterator brRowIt = branches->Begin( brIt );
+    for( ; brRowIt != branches->End( brIt ); ++brRowIt )
+    {
+      // Branch's second point
+      TImage::PointType second_point;
+      input_image->
+        TransformIndexToPhysicalPoint( brRowIt->first, second_point );
+      unsigned long second_id = simple_branches_points->GetNumberOfPoints( );
+      simple_branches_points->InsertNextPoint(
+        second_point[ 0 ], second_point[ 1 ], second_point[ 2 ]
+        );
+      simple_branches_cells->InsertNextCell( 2 );
+      simple_branches_cells->InsertCellPoint( first_id );
+      simple_branches_cells->InsertCellPoint( second_id );
+
+      // Detailed path
+      double pathId = double( brRowIt->second - 1 ) / double( nBranches - 1 );
+      TFilter::TVertices path;
+      mst->GetPath( path, brIt->first, brRowIt->first );
+      TFilter::TVertices::const_iterator pIt = path.begin( );
+      for( ; pIt != path.end( ); ++pIt )
+      {
+        TImage::PointType path_point;
+        input_image->TransformIndexToPhysicalPoint( *pIt, path_point );
+        detailed_branches_points->InsertNextPoint(
+          path_point[ 0 ], path_point[ 1 ], path_point[ 2 ]
+          );
+        detailed_branches_scalars->InsertNextTuple1( pathId );
+        if( pIt != path.begin( ) )
+        {
+          unsigned long nPoints =
+            detailed_branches_points->GetNumberOfPoints( );
+          detailed_branches_cells->InsertNextCell( 2 );
+          detailed_branches_cells->InsertCellPoint( nPoints - 2 );
+          detailed_branches_cells->InsertCellPoint( nPoints - 1 );
+
+        } // fi
+
+      } // rof
+
+    } // rof
+
+  } // rof
+  vtkSmartPointer< vtkPolyData > simple_branches_polydata =
+    vtkSmartPointer< vtkPolyData >::New( );
+  simple_branches_polydata->SetPoints( simple_branches_points );
+  simple_branches_polydata->SetLines( simple_branches_cells );
+  view.AddPolyData( simple_branches_polydata, 1, 0, 1, 1 );
+
+  vtkSmartPointer< vtkPolyData > detailed_branches_polydata =
+    vtkSmartPointer< vtkPolyData >::New( );
+  detailed_branches_polydata->SetPoints( detailed_branches_points );
+  detailed_branches_polydata->SetLines( detailed_branches_cells );
+  detailed_branches_polydata->
+    GetPointData( )->SetScalars( detailed_branches_scalars );
+  view.AddPolyData( detailed_branches_polydata, 1 );
+
+  // Let some more interaction
+  view.Render( );
+  view.Start( );
 
-  } // yrt
-  */
   return( 0 );
 }
 
@@ -197,6 +370,27 @@ void ReadImage( typename I::Pointer& image, const std::string& filename )
   image->DisconnectPipeline( );
 }
 
+// -------------------------------------------------------------------------
+template< class I >
+void SaveImage( const I* image, const std::string& filename )
+{
+  typename itk::ImageFileWriter< I >::Pointer writer =
+    itk::ImageFileWriter< I >::New( );
+  writer->SetInput( image );
+  writer->SetFileName( filename );
+  try
+  {
+    writer->Update( );
+  }
+  catch( itk::ExceptionObject& err )
+  {
+    std::cerr
+      << "Error saving \"" << filename << "\": " << err
+      << std::endl;
+
+  } // yrt
+}
+
 // -------------------------------------------------------------------------
 template< class I, class O >
 void DistanceMap(