Head Motion Detection in Gaze Based Aiming

Unmanned weapons have great potential to be widely used in future wars. The gaze-based aiming technology can be applied to control pan-tilt weapon systems remotely with high precision and efficiency. Gaze direction is related to head motion, which is a combination of head and eye movements. In this paper, a head motion detection method is proposed, which is based on the fusion of inertial and vision information. The inertial sensors can measure rotation in high-frequency with good performance, while vision sensors are able to eliminate drifts. By combining the characteristics of both sensors, the proposed approach achieves the effect of high-frequency, real-time, and drift-free head motion detection. The experiments show that our method can smooth the outputs, constrain drifts of inertial measurements, and achieve high detection accuracy.