ITK/Examples/Iterators/ImageBoundaryFacesCalculator

ImageBoundaryFacesCalculator.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkShapedNeighborhoodIterator.h"
3. include "itkImageRegionIterator.h"
4. include "itkNeighborhoodAlgorithm.h"

typedef itk::Image<unsigned char, 2> ImageType;

static void CreateImage(ImageType::Pointer image);

int main(int, char*[]) {

 ImageType::Pointer image = ImageType::New();
 CreateImage(image);

 ImageType::SizeType radius;
 radius.Fill(1);

 typedef itk::ImageRegionConstIterator<ImageType> IteratorType;

 typedef itk::NeighborhoodAlgorithm
   ::ImageBoundaryFacesCalculator< ImageType > FaceCalculatorType;

 FaceCalculatorType faceCalculator;

 FaceCalculatorType::FaceListType faceList;
 faceList = faceCalculator(image, image->GetLargestPossibleRegion(),
                           radius);
 
 FaceCalculatorType::FaceListType::iterator faceListIterator;

 for ( faceListIterator=faceList.begin(); faceListIterator != faceList.end(); ++faceListIterator)
   {
   IteratorType iterator(image,*faceListIterator);
   while(!iterator.IsAtEnd())
     {
     std::cout << iterator.GetIndex() << " ";
     ++iterator;
     }

   std::cout << std::endl;
   }

 return EXIT_SUCCESS;

}

void CreateImage(ImageType::Pointer image) {

 ImageType::IndexType start;
 start[0] = 0;
 start[1] = 0;

 ImageType::SizeType size;
 size[0] = 5;
 size[1] = 5;

 ImageType::RegionType region;
 region.SetSize(size);
 region.SetIndex(start);

 image->SetRegions(region);
 image->Allocate();

 itk::ImageRegionIterator<ImageType> imageIterator(image,region);

 while(!imageIterator.IsAtEnd())
   {
   imageIterator.Set(2);
   ++imageIterator;
   }

} </source>

CMakeLists.txt

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

PROJECT(ImageBoundaryFacesCalculator)

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

ADD_EXECUTABLE(ImageBoundaryFacesCalculator ImageBoundaryFacesCalculator.cxx) TARGET_LINK_LIBRARIES(ImageBoundaryFacesCalculator ITKNumerics ITKBasicFilters ITKCommon ITKIO)

</source>