I'm working on converting an old Hardinge HC lathe. It has a mechanically indexed 8 position turret on it. I somehow need to develop some logic so that mach3 can verify that the turret is in the correct position. I thought about having a camera that looks at the numbers engraved on the turret base but i have no idea what to do with that. Also thought about multiple prox switches as a position confirmation but that would get messy to mount and wire. They wouldn't be very well protected. Anyone have any ideas how to accomplish this?

can mach3 do video recognition? and can it be done in a macro