ITK  4.13.0
Insight Segmentation and Registration Toolkit
WikiExamples/Statistics/StatisticsImageFilter.cxx
#include "itkImage.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();
CreateImage(image);
typedef itk::StatisticsImageFilter<ImageType> StatisticsImageFilterType;
StatisticsImageFilterType::Pointer statisticsImageFilter
= StatisticsImageFilterType::New ();
statisticsImageFilter->SetInput(image);
statisticsImageFilter->Update();
std::cout << "Mean: " << statisticsImageFilter->GetMean() << std::endl;
std::cout << "Std.: " << statisticsImageFilter->GetSigma() << std::endl;
std::cout << "Min: " << statisticsImageFilter->GetMinimum() << std::endl;
std::cout << "Max: " << statisticsImageFilter->GetMaximum() << std::endl;
return EXIT_SUCCESS;
}
void CreateImage(ImageType::Pointer image)
{
// Create an image with 2 connected components
ImageType::RegionType region;
start[0] = 0;
start[1] = 0;
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 = 20; r < 80; r++)
{
for(unsigned int c = 30; c < 100; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 255);
}
}
// Make another square
for(unsigned int r = 100; r < 130; r++)
{
for(unsigned int c = 115; c < 160; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 255);
}
}
}