typename OutputImageType::Pointer image=reader2->GetOutput();
#if ITK_VERSION_MAJOR > 4 || (ITK_VERSION_MAJOR == 4 && ITK_VERSION_MINOR >= 6)
filter->SetReferenceImage(image);
typename OutputImageType::Pointer image=reader2->GetOutput();
#if ITK_VERSION_MAJOR > 4 || (ITK_VERSION_MAJOR == 4 && ITK_VERSION_MINOR >= 6)
filter->SetReferenceImage(image);