ITK  5.0.0
Insight Segmentation and Registration Toolkit
WikiExamples/Developer/MultiThreadedImageFilter.cxx
#include "itkImage.h"
#include "MultiThreadedImageFilter.h"
template <typename TImage>
static void CreateImage(TImage* const image);
template <typename TImage>
static void OutputImage(TImage* const image);
int main(int, char*[])
{
// Setup types
using ImageType = itk::Image<int, 2>;
using FilterType = itk::MultiThreadedImageFilter<ImageType>;
ImageType::Pointer image = ImageType::New();
CreateImage(image.GetPointer());
// Create and the filter
FilterType::Pointer filter = FilterType::New();
filter->SetInput(image);
// filter->SetNumberOfThreads(3); // There is no need to specify this, it is automatically determined
filter->Update();
std::cout << "Image after filter: " << std::endl;
OutputImage(image.GetPointer());
std::cout << "Output: " << std::endl;
OutputImage(filter->GetOutput());
return EXIT_SUCCESS;
}
template <typename TImage>
void CreateImage(TImage* const image)
{
// Create an image with 2 connected components
typename TImage::IndexType corner = {{0,0}};
// unsigned int NumRows = 200;
// unsigned int NumCols = 300;
unsigned int NumRows = 3;
unsigned int NumCols = 2;
typename TImage::SizeType size = {{NumRows, NumCols}};
typename TImage::RegionType region(corner, size);
image->SetRegions(region);
image->Allocate();
image->FillBuffer(0);
}
template <typename TImage>
void OutputImage(TImage* const image)
{
itk::ImageRegionConstIterator<TImage> imageIterator(image, image->GetLargestPossibleRegion());
while(!imageIterator.IsAtEnd())
{
std::cout << imageIterator.Get() << std::endl;
++imageIterator;
}
}