An optical head-pose tracking sensor for pointing devices using IR-LED based markers and a low-cost camera

In this paper, we present a head-mounted pointing device (i.e. "Head-mouse") which consists of an optical sensor based on a small CMOS-camera with the IR blocking filter replaced by an IR-bandpass filter and IR LEDs (850nm wavelength) as markers. The advantage of our sensor compared to other head-mouse systems and eye-gaze systems is that the proposed sensor results in an absolute positioning of the mouse cursor and does not require laborious recalibration as the user changes his position. Furthermore, the sensor has a larger operating area and allows seamless control of multiple devices.