ITK/Examples/Smoothing/CurvatureFlowImageFilter

CurvatureFlowImageFilter.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkCastImageFilter.h"
3. include "itkCurvatureFlowImageFilter.h"
4. include "itkSubtractImageFilter.h"
5. include "itkImageFileReader.h"

1. include "QuickView.h"

int main( int argc, char *argv[]) {

 if( argc < 2 )
   {
   std::cerr << "Usage: " << argv[0];
   std::cerr << " inputImage [iterations]" << std::endl;
   return EXIT_FAILURE;
   }

 int iterations = 5;
 if (argc > 2)
   {
   iterations = atoi(argv[2]);
   }

 typedef   float           InternalPixelType;
 const     unsigned int    Dimension = 2;
 typedef itk::Image< InternalPixelType, Dimension >  InternalImageType;

 typedef  itk::ImageFileReader< InternalImageType > ReaderType;

 ReaderType::Pointer reader = ReaderType::New();

 reader->SetFileName( argv[1] );

 typedef itk::CurvatureFlowImageFilter< InternalImageType, InternalImageType >CurvatureFlowImageFilterType;

 CurvatureFlowImageFilterType::Pointer smoothing = CurvatureFlowImageFilterType::New();

 smoothing->SetInput( reader->GetOutput() );
 smoothing->SetNumberOfIterations( iterations );
 smoothing->SetTimeStep( 0.125 );

 typedef itk::SubtractImageFilter< InternalImageType > SubtractImageFilterType;
 SubtractImageFilterType::Pointer diff = SubtractImageFilterType::New();
 diff->SetInput1(reader->GetOutput());
 diff->SetInput2(smoothing->GetOutput());

 QuickView viewer;
 viewer.AddImage<InternalImageType>(
   reader->GetOutput(),true,
   itksys::SystemTools::GetFilenameName(argv[1]));  

 std::stringstream desc;
 desc << "CurvatureFlow\niterations = " << iterations;
 viewer.AddImage<InternalImageType>(
   smoothing->GetOutput(),
   true,
   desc.str());  

 std::stringstream desc2;
 desc2 << "Original - CurvatureFlow";
 viewer.AddImage<InternalImageType>(
   diff->GetOutput(),
   true,
   desc2.str());  

 viewer.Visualize();

 return EXIT_SUCCESS;

} </source>

CMakeLists.txt

<source lang="cmake"> cmake_minimum_required(VERSION 2.6)

PROJECT(CurvatureFlowImageFilter)

FIND_PACKAGE(ITK REQUIRED) INCLUDE(${ITK_USE_FILE})

ADD_EXECUTABLE(CurvatureFlowImageFilter CurvatureFlowImageFilter.cxx) TARGET_LINK_LIBRARIES(CurvatureFlowImageFilter ITKIO)

</source>