Save Image to a file in ITK

typedef float       OutputPixelType;
typedef itk::Image< OutputPixelType, 2 >    OutputImageType;
void   ClassName::saveImage(OutputImageType::Pointer image, const char * outputFilename)
{

    // Access to a Size of Image Region
  typedef  itk::ImageFileWriter< OutputImageType  > WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName(outputFilename);
  writer->SetInput(image);
  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & err )
    {
    std::cerr << "ExceptionObject caught !" << std::endl;
    std::cerr << err << std::endl;
   
    }
}