WikiExamples/Iterators/ImageRandomConstIteratorWithIndex.cxx

#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageRandomConstIteratorWithIndex.h"

int main(int, char *[])
{
  using ImageType = itk::Image<unsigned char, 2>;
  ImageType::Pointer image = ImageType::New();
  
  ImageType::SizeType regionSize;
  regionSize[0] = 5;
  regionSize[1] = 4;

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

  ImageType::RegionType region;
  region.SetSize(regionSize);
  region.SetIndex(regionIndex);

  image->SetRegions(region);
  image->Allocate();
  image->FillBuffer(0);
  
  itk::ImageRandomConstIteratorWithIndex<ImageType> imageIterator(image, image->GetLargestPossibleRegion());
  imageIterator.SetNumberOfSamples(200);
  imageIterator.GoToBegin();
  
  while(!imageIterator.IsAtEnd())
    {
    std::cout << imageIterator.GetIndex() << std::endl;

    ++imageIterator;
    }
    
  return EXIT_SUCCESS;
}