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Contour Spatial Object

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Synopsis

Contour spatial object.

Results

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Code

C++

#include "itkSpatialObjectToImageFilter.h"
#include "itkContourSpatialObject.h"
#include "itkContourSpatialObjectPoint.h"
#include "itkImageFileWriter.h"

#ifdef ENABLE_QUICKVIEW
#  include "QuickView.h"
#endif

int
main(int /*argc*/, char * /*argv*/[])
{
  using PixelType = unsigned char;
  constexpr unsigned int Dimension = 2;

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

  using ContourType = itk::ContourSpatialObject<Dimension>;

  using SpatialObjectToImageFilterType = itk::SpatialObjectToImageFilter<ContourType, ImageType>;


  // Create a list of points
  ContourType::ControlPointListType points;

  // Add some points
  ContourType::ControlPointType point;
  point.SetPositionInObjectSpace(0, 0);
  points.push_back(point);
  point.SetPositionInObjectSpace(0, 30);
  points.push_back(point);
  point.SetPositionInObjectSpace(30, 30);
  points.push_back(point);
  point.SetPositionInObjectSpace(0, 0);
  points.push_back(point);

  // Create a contour from the list of points
  auto contour = ContourType::New();
  contour->SetControlPoints(points);

  auto         imageFilter = SpatialObjectToImageFilterType::New();
  itk::Size<2> size;
  size.Fill(50);
  imageFilter->SetInsideValue(255); // white
  imageFilter->SetSize(size);
  imageFilter->SetInput(contour);
  imageFilter->Update();

  itk::WriteImage(imageFilter->GetOutput(), "contour.png");

#ifdef ENABLE_QUICKVIEW
  QuickView viewer;
  viewer.AddImage(imageFilter->GetOutput());
  viewer.Visualize();
#endif
  return EXIT_SUCCESS;
}

Classes demonstrated

template<unsigned int TDimension = 3>
class ContourSpatialObject : public itk::PointBasedSpatialObject<TDimension, ContourSpatialObjectPoint<TDimension>>

Representation of a Contour based on the spatial object classes.

The Contour is basically defined by a set of points which are inside this blob

See

SpatialObjectPoint

ITK Sphinx Examples:

• All ITK Sphinx Examples

\sphinxexample{Core/SpatialObjects/{{

ContourSpatialObject,Contour Spacial Object} \endsphinx

See itk::ContourSpatialObject for additional documentation.