ITK  5.0.0
Insight Segmentation and Registration Toolkit
WikiExamples/ImageProcessing/LaplacianImageFilter.cxx
#include "itkImage.h"
#include "QuickView.h"
int main(int argc, char * argv[])
{
// Verify command line arguments
if( argc < 2 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile" << std::endl;
return EXIT_FAILURE;
}
// Parse command line arguments
std::string inputFilename = argv[1];
// Setup types
using FloatImageType = itk::Image< float, 2 >;
readerType::Pointer reader = readerType::New();
reader->SetFileName( inputFilename.c_str() );
reader->Update();
filterType::Pointer laplacianFilter = filterType::New();
laplacianFilter->SetInput( reader->GetOutput() ); // NOTE: input image type must be double or float
laplacianFilter->Update();
QuickView viewer;
viewer.AddImage<FloatImageType>(reader->GetOutput());
viewer.AddImage<FloatImageType>(laplacianFilter->GetOutput());
viewer.Visualize();
return EXIT_SUCCESS;
}