ITK  4.9.0
Insight Segmentation and Registration Toolkit
WikiExamples/ImageProcessing/InvertIntensityImageFilter.cxx
#include "itkImage.h"
#include "QuickView.h"
typedef itk::Image<unsigned char, 2> ImageType;
static void CreateImage(ImageType::Pointer image);
int main(int argc, char *argv[])
{
ImageType::Pointer image = ImageType::New();
std::stringstream desc;
CreateImage(image);
unsigned int maximum = 255;
if (argc > 1)
{
typedef itk::ImageFileReader<ImageType> ReaderType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
reader->Update();
image = reader->GetOutput();
desc << itksys::SystemTools::GetFilenameName(argv[1]);
if (argc > 2)
{
maximum = atoi(argv[2]);
}
}
else
{
CreateImage(image);
desc << "Synthetic image";
maximum = 50;
}
InvertIntensityImageFilterType;
InvertIntensityImageFilterType::Pointer invertIntensityFilter
= InvertIntensityImageFilterType::New();
invertIntensityFilter->SetInput(image);
invertIntensityFilter->SetMaximum(maximum);
QuickView viewer;
viewer.AddImage(
image.GetPointer(),
true,
desc.str());
std::stringstream desc2;
desc2 << "InvertIntensity, maximum = " << maximum;
viewer.AddImage(
invertIntensityFilter->GetOutput(),
true,
desc2.str());
viewer.Visualize();
return EXIT_SUCCESS;
}
void CreateImage(ImageType::Pointer image)
{
// Create an image
ImageType::RegionType region;
ImageType::IndexType start;
start[0] = 0;
start[1] = 0;
ImageType::SizeType size;
unsigned int NumRows = 200;
unsigned int NumCols = 300;
size[0] = NumRows;
size[1] = NumCols;
region.SetSize(size);
region.SetIndex(start);
image->SetRegions(region);
image->Allocate();
// Make a square
for(unsigned int r = 40; r < 100; r++)
{
for(unsigned int c = 40; c < 100; c++)
{
ImageType::IndexType pixelIndex;
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 50);
}
}
}