ITK  4.13.0
Insight Segmentation and Registration Toolkit
WikiExamples/Functions/GaussianBlurImageFunction.cxx
#include "itkImage.h"
int main( int argc, char * argv[] )
{
if( argc < 5 ) {
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile outputImageFile sigma maxKernelWidth" << std::endl;
return EXIT_FAILURE;
}
typedef itk::Image< float, 2 > ImageType;
typedef itk::ImageRegionConstIterator< ImageType > ConstIteratorType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
reader->Update();
const ImageType * inputImage = reader->GetOutput();
ImageType::RegionType region = inputImage->GetBufferedRegion();
ConstIteratorType it( inputImage, region );
ImageType::Pointer output = ImageType::New();
output->SetRegions( region );
output->SetOrigin( inputImage->GetOrigin() );
output->SetSpacing( inputImage->GetSpacing() );
output->Allocate();
IteratorType out( output, region );
GFunctionType::Pointer gaussianFunction = GFunctionType::New();
gaussianFunction->SetInputImage( inputImage );
GFunctionType::ErrorArrayType setError;
setError.Fill( 0.01 );
gaussianFunction->SetMaximumError( setError );
gaussianFunction->SetSigma( atof( argv[3] ) );
gaussianFunction->SetMaximumKernelWidth( atoi( argv[4] ) );
it.GoToBegin();
out.GoToBegin();
while( !it.IsAtEnd() )
{
out.Set( gaussianFunction->EvaluateAtIndex(it.GetIndex() ) );
++it;
++out;
}
WriterType::Pointer writer = WriterType::New();
writer->SetFileName(argv[2]);
writer->SetInput(output);
writer->Update();
return EXIT_SUCCESS;
}