Active Eye-tracking System by Using Quad PTZ Cameras

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There have been many researches on eye-tracking systems to estimate eye gaze and integrated with head movement tracking. In this paper, we describe an active eye- tracking system that can provide usability improvement of human-machine interface (HMI) with quad PTZ cameras. We propose an active tracking architecture for real-time eye- tracking in an open environment to get a wide-angle and long-distance available range. We implemented four following parts: face tracking module by Adaboost algorithm, eye detection module by Cognitive calibration algorithm, active control module by integration algorithm and input control module by diagonal-box checker search. We presented an active eye-tracking system that users can use it in unrestricted posture with different angles and distance to the pc. It can calculate the camera target position and then map the gazing point to screen coordinate. We can choice any user to track eye gazing when there are multi-users in front of the pc. The results provide a useful HMI for large head motion and long distance usages.

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