Examples/SpatialObjects/BoundingBoxFromImageMaskSpatialObject.cxx

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 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
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// Disable warning for long symbol names in this file only
 
// Software Guide : BeginLatex
//
// \index{itk::ImageMaskSpatialObject}
// \index{itk::ImageMaskSpatialObject!GetValue()}
//
// This example illustrates how to compute the bounding box around a binary
// contained in an ImageMaskSpatialObject. This is typically useful for
// extracting the region of interest of a segmented object and ignoring the
// larger region of the image that is not occupied by the segmentation.
//
// Software Guide : EndLatex
 
// Software Guide : BeginCodeSnippet
#include "itkImageMaskSpatialObject.h"
#include "itkImage.h"
// Software Guide : EndCodeSnippet
 
#include "itkImageFileReader.h"
 
int
main(int argc, char * argv[])
{
 
  if (argc < 2)
  {
    std::cerr << "Missing Parameters " << std::endl;
    std::cerr << "Usage: " << argv[0];
    std::cerr << " inputBinaryImageFile  ";
    return EXIT_FAILURE;
  }
 
  using ImageMaskSpatialObject = itk::ImageMaskSpatialObject<3>;
 
  using ImageType = ImageMaskSpatialObject::ImageType;
  using ReaderType = itk::ImageFileReader<ImageType>;
 
  auto reader = ReaderType::New();
 
  reader->SetFileName(argv[1]);
 
  try
  {
    reader->Update();
  }
  catch (const itk::ExceptionObject & excp)
  {
    std::cerr << excp << std::endl;
    return EXIT_FAILURE;
  }
 
  auto maskSO = ImageMaskSpatialObject::New();
 
  maskSO->SetImage(reader->GetOutput());
  maskSO->Update();
 
  std::cout << "Bounding Box Region: "
            << maskSO->GetMyBoundingBoxInWorldSpace()->GetBounds()
            << std::endl;
 
  return EXIT_SUCCESS;
}