Real time, real camera traking with vvvv?

i everyone saw this,

im working on a rs232 interface to control a flysky radio, from there to a miru mod, to a drone1… and there are another users working/experimenting with diferents SDK/apps to control a ParrotAr.Drone from the pc, ( with vvvv of course! )

it will be cool to achive something like this

but all this projects share the same hardware in a way… how to track the position of the cameras, or que quadcopters ?

the idea will be to do somethink like this

but in vvvv, what is the best way to do it ? 3 webcams without Ir filter? 3 wimote controls ? any idea or similar projects ?