ITK  4.9.0
Insight Segmentation and Registration Toolkit
WikiExamples/IO/ReadVectorImage.cxx
#include "itkVectorImage.h"
int main(int argc, char *argv[])
{
if (argc < 2)
{
std::cerr << "Usage: " << argv[0] << " imageFilename" << std::endl;
return EXIT_FAILURE;
}
std::string filename = argv[1];
typedef itk::VectorImage<float, 2> ImageType;
typedef itk::ImageFileReader<ImageType> ReaderType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName(filename);
reader->Update();
std::cout << reader->GetOutput()->GetNumberOfComponentsPerPixel() << std::endl;
return EXIT_SUCCESS;
}