Convert Triangle Mesh to Binary Image#

Synopsis#

Convert a triangular itk::Mesh to binary itk::Image

Results#

Input image and mesh

Input 3D Image and Mesh#

Output image

Output image#

Code#

C++#

#include "itkMesh.h"
#include "itkMeshFileReader.h"

#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"

#include "itkCastImageFilter.h"
#include "itkTriangleMeshToBinaryImageFilter.h"

int
main(int argc, char * argv[])
{
  if (argc != 4)
  {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0];
    std::cerr << " <InputImageName> <InputMeshName> <OutputImageName>";
    std::cerr << std::endl;
    return EXIT_FAILURE;
  }

  const char * inputImageName = argv[1];
  const char * inputMeshName = argv[2];
  const char * outputImageName = argv[3];

  constexpr unsigned int Dimension = 3;
  using MeshPixelType = double;

  using MeshType = itk::Mesh<MeshPixelType, Dimension>;

  using MeshReaderType = itk::MeshFileReader<MeshType>;
  auto meshReader = MeshReaderType::New();
  meshReader->SetFileName(inputMeshName);

  using InputPixelType = unsigned char;
  using InputImageType = itk::Image<InputPixelType, Dimension>;

  const auto input = itk::ReadImage<InputImageType>(inputImageName);

  using OutputPixelType = unsigned char;
  using OutputImageType = itk::Image<OutputPixelType, Dimension>;

  using CastFilterType = itk::CastImageFilter<InputImageType, OutputImageType>;
  auto cast = CastFilterType::New();
  cast->SetInput(input);

  using FilterType = itk::TriangleMeshToBinaryImageFilter<MeshType, OutputImageType>;
  auto filter = FilterType::New();
  filter->SetInput(meshReader->GetOutput());
  filter->SetInfoImage(cast->GetOutput());
  filter->SetInsideValue(itk::NumericTraits<OutputPixelType>::max());
  try
  {
    filter->Update();
  }
  catch (const itk::ExceptionObject & error)
  {
    std::cerr << "Error: " << error << std::endl;
    return EXIT_FAILURE;
  }

  try
  {
    itk::WriteImage(filter->GetOutput(), outputImageName);
  }
  catch (const itk::ExceptionObject & error)
  {
    std::cerr << "Error: " << error << std::endl;
    return EXIT_FAILURE;
  }

  return EXIT_SUCCESS;
}

Classes demonstrated#

template<typename TInputMesh, typename TOutputImage>
class TriangleMeshToBinaryImageFilter : public itk::ImageSource<TOutputImage>

3D Rasterization algorithm Courtesy of Dr David Gobbi of Atamai Inc.

Author

Leila Baghdadi, MICe, Hospital for Sick Childern, Toronto, Canada,

See itk::TriangleMeshToBinaryImageFilter for additional documentation.