ITK/Examples/Smoothing/AntiAliasBinaryImageFilter

#include "itkImage.h"
#include "itkImageFileWriter.h"
#include "itkAntiAliasBinaryImageFilter.h"
 
#include "QuickView.h"
 
typedef itk::Image<unsigned char, 2>  UnsignedCharImageType;
typedef itk::Image<float, 2>  FloatImageType;
 
static void CreateImage(UnsignedCharImageType::Pointer image);
 
int main(int, char *[])
{
  UnsignedCharImageType::Pointer image = UnsignedCharImageType::New();
  CreateImage(image);
 
  // Take the absolute value of the image
  typedef itk::AntiAliasBinaryImageFilter <UnsignedCharImageType, FloatImageType>
          AntiAliasBinaryImageFilterType;
 
  AntiAliasBinaryImageFilterType::Pointer antiAliasFilter
          = AntiAliasBinaryImageFilterType::New ();
  antiAliasFilter->SetInput(image);
 
  QuickView viewer;
  viewer.AddImage<UnsignedCharImageType>(image);
  viewer.AddImage<FloatImageType>(antiAliasFilter->GetOutput());
  viewer.Visualize();
 
  return EXIT_SUCCESS;
}
 
void CreateImage(UnsignedCharImageType::Pointer image)
{
  UnsignedCharImageType::IndexType start;
  start.Fill(0);
 
  UnsignedCharImageType::SizeType size;
  size.Fill(200);
 
  UnsignedCharImageType::RegionType region;
  region.SetSize(size);
  region.SetIndex(start);
 
  image->SetRegions(region);
  image->Allocate();
 
  itk::ImageRegionIterator<UnsignedCharImageType> imageIterator(image,region);
 
  while(!imageIterator.IsAtEnd())
    {
    if(imageIterator.GetIndex()[0] - imageIterator.GetIndex()[1] > 5) // some pixels white, some black
      {
      imageIterator.Set(255);
      }
    else
      {
      imageIterator.Set(0);
      }
    ++imageIterator;
    }
 
}