Gaze Direction Estimation Based on Natural Head Movements

In this paper, we present a new approach for estimating head pose and gaze direction under a monocular vision. The human visual line-of-sight consists of two components: the pose of head and the orientation of eyes within their sockets. First we compute the head pose of a user, and then calculate the gaze direction from the relative positions of the iris and the inner eye corner. The experimental results show that under natural head movements (yaw and pitch angles of head in real image sequences are up to 30deg and 20deg, respectively), our method achieves an average deviation to 2deg and 4deg in azimuth and elevation angles respectively.