1. Adachi Y, Kuno Y, Shimada N, Shirai Y (1998) Intelligent wheelchair using visual information on human faces. In: Proceedings of IEEE Conference on Intelligent Robots and Systems, pp 354–359
2. Adachi Y, Kuno Y, Shimada N, Shirai Y (1998) Intelligent wheelchair using visual information on human faces. In: Proceedings of IEEE Conference on Intelligent Robots and Systems, pp 354–359
3. Arrington KF (1997) Viewpoint Eye Tracker. Arrington Research
4. Bien Z, Song WK (2000) Novel wheelchair-based robotic arm with visual servoing capability for human-robot interaction. In: Proceedings of Workshop on Service Automation and Robotics, Hong Kong, pp 5–17
5. Capurro C, Panerai F, Sandini G (1997) Dynamic vergence using log-polar images. International Journal of Computer Vision 24(1): 79–94