However, I see some are even closed loop drivers with networking/EThernert/etc. interface....
No, see those 1st time. What driver are you using, what are the interfaceing nee...
set default r to 10
adjusted sigmal to kernel radius ratio to 1/4
added new filter, port from gxsm2
adjusted kernel default type to assure DOUBLE
added edge filter (Laplace of Gauss)