ITK  4.9.0
Insight Segmentation and Registration Toolkit
WikiExamples/Smoothing/VectorMedianImageFilter.cxx
#include "itkImage.h"
#include "itkRGBPixel.h"
#include "itkVector.h"
#include "itksys/SystemTools.hxx"
#include <sstream>
#include "QuickView.h"
namespace itk
{
template< typename TComponent, unsigned int NVectorDimension = 3 >
class myVectorPixel : public Vector<TComponent,NVectorDimension>
{
public:
typedef myVectorPixel Self;
typedef Vector<TComponent,NVectorDimension> Superclass;
bool operator<=(const Self & r) const
{
if (this->GetNorm() <= r.GetNorm())
{
return true;
}
else
{
return false;
}
}
bool operator<(const Self & r) const
{
if (this->GetNorm() < r.GetNorm())
{
return true;
}
else
{
return false;
}
}
};
}
int main(int argc, char * argv[])
{
// Verify command line arguments
if( argc < 2 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " InputImageFile [radius]" << std::endl;
return EXIT_FAILURE;
}
std::string inputFilename = argv[1];
// Setup types
typedef itk::myVectorPixel<unsigned char,3> PixelType;
typedef itk::Image<PixelType, 2 > ImageType;
typedef itk::RGBPixel<unsigned char> RGBPixelType;
typedef itk::Image<RGBPixelType, 2 > RGBImageType;
typedef itk::ImageFileReader<ImageType> ReaderType;
// Create and setup a reader
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( inputFilename );
// Create and setup a median filter
FilterType::Pointer medianFilter = FilterType::New();
FilterType::InputSizeType radius;
radius.Fill(2);
if (argc > 2)
{
radius.Fill(atoi(argv[2]));
}
medianFilter->SetRadius(radius);
medianFilter->SetInput(reader->GetOutput());
// Cast the custom myVector's to RGBPixel's
CastType::Pointer castReader = CastType::New();
castReader->SetInput(reader->GetOutput());
CastType::Pointer castMedian = CastType::New();
castMedian->SetInput(medianFilter->GetOutput());
QuickView viewer;
viewer.AddRGBImage(
castReader->GetOutput(),
true,
itksys::SystemTools::GetFilenameName(inputFilename));
std::stringstream desc;
desc << "MedianImageFilter, radius = " << radius;
viewer.AddRGBImage(
castMedian->GetOutput(),
true,
desc.str());
viewer.Visualize();
return EXIT_SUCCESS;
}