Damien Wenck

Hey all, I'm trying to figure out how to set up a custom IR LED system to place on top of my head. I have attached a sketch of the system I would like to build, but wanted clarification about the coordinate system if I have the camera above me (looking downwards at the LEDs/my head). [IMG]http://i66.tinypic.com/6hlrtx.png[/IMG] If someone can please confirm how the coordinate system works (and also if the coordinate system will change if the camera position changes). Thanks, Damien