A calibration system for multiple cameras and LED light sources in location-based information support system using the compact battery-less information terminal(CoBIT)

To realize a location-based information support system, we have been developing the information support system using compact battery-less information terminals (CoBITs). In this paper, a calibration method for multiple cameras for estimation of the position and orientation of the terminal and LED light sources on the controllable pan-tilt heads for sending the optical beam information for this system is proposed. For the application for information support in an event, a calibration system which is easy to use for inexperienced persons and to setup quickly is needed. To calibrate multiple cameras and LED light sources simultaneously, we employ a calibration technique for the multiple cameras based on the self-calibration method.