template<int I> struct order {};

template < typename T >
class CKernel1D{
public:
    CKernel1D( double d, int i ) {
        initGauss(d, i);
    }
    template<int I> CKernel1D( double, int, order<I>, bool normalize = false ) {
        initGauss(dSigma, I);

        if(normalize){
            normalizeGaussian(I);
        }
    }
private:
    void initGauss( double dSigma, int nOrder ) {
        // stuff
    }
    std::vector<T> m_vData;
    int m_nSize;
    int m_nCenter;
};

int main() {
    CKernel1D<double> way1(5.0, 1);
    CKernel1D<double> way2(5.0, 1, order<5>());
    CKernel1D<double> way3(5.0, 1, order<5>(), true);
}