gistfile1.cpp

#include "opencv2/core/core.hpp"

template <class T> void process( Mat_<T> & m, T & res, int i, int j)
{
    T a = m(0,0);
    T b = m(i,j);
    res = a+b;
}
int main()
{
    Mat_<float> m(4,4,3.3f);
    float r;
    process(m,r,2,2);
    //cerr << r << endl << m << endl;
    return 0;
}