Iterative Hole Filling

Synopsis

Fill hole or cavity in one itk::Image

Results

Input image

Input image

Output image

Output image

Code

C++

#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkVotingBinaryIterativeHoleFillingImageFilter.h"

int
main(int argc, char * argv[])
{
  if (argc != 6)
  {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0];
    std::cerr << " <InputFileName> <OutputFileName> <radius> <majority threshold> <number of iterations>";
    std::cerr << std::endl;
    return EXIT_FAILURE;
  }

  const char * inputFileName = argv[1];
  const char * outputFileName = argv[2];

  int          r = std::stoi(argv[3]);
  int          majorityThreshold = std::stoi(argv[4]);
  unsigned int numberOfIterations = std::stoi(argv[5]);

  constexpr unsigned int Dimension = 2;

  using PixelType = unsigned char;
  using ImageType = itk::Image<PixelType, Dimension>;

  using ReaderType = itk::ImageFileReader<ImageType>;
  ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName(inputFileName);

  using FilterType = itk::VotingBinaryIterativeHoleFillingImageFilter<ImageType>;
  FilterType::InputSizeType radius;
  radius.Fill(r);

  FilterType::Pointer filter = FilterType::New();
  filter->SetInput(reader->GetOutput());
  filter->SetRadius(radius);
  filter->SetMajorityThreshold(majorityThreshold);
  filter->SetBackgroundValue(itk::NumericTraits<PixelType>::Zero);
  filter->SetForegroundValue(itk::NumericTraits<PixelType>::max());
  filter->SetMaximumNumberOfIterations(numberOfIterations);

  using WriterType = itk::ImageFileWriter<ImageType>;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName(outputFileName);
  writer->SetInput(filter->GetOutput());
  try
  {
    writer->Update();
  }
  catch (itk::ExceptionObject & error)
  {
    std::cerr << "Error: " << error << std::endl;
    return EXIT_FAILURE;
  }

  return EXIT_SUCCESS;
}

Classes demonstrated