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中文摘要：
利用共面4彩色标志点跟踪算法和跟踪角膜反射-瞳孔中心的技术,基于模型和特征相结合的跟踪思想,通过实时稳定地跟踪角膜反射点及用户的瞳孔中心,构建了头部自由运动的视线跟踪系统,实时获取用户注视点的信息,较好地解决了用户头部小范围运动问题。对系统误差的分析结果表明,头部自由运动的视线跟踪系统实时跟踪误差小于1 cm,达到了良好的视线跟踪效果,为视线跟踪技术与人机交互设备的集成和广泛应用奠定了良好的基础。
英文摘要：
By using the position tracking algorithm with four coplanar markers,the eye gaze tracking system with head unfixed is constructed based on the principle of the corneal reflection and the pupil center.The problem of head movement is solved by capturing eye gaze spot in real time.Experimental results show that the average error of the eye gaze tracking system is approximately 1 cm when user head moves freely.It indicates the effectiveness of the eye gaze tracking system.It is expected that the availability of the system facilitates the development of eye tracking applications and the eventual integration of eye tracking into the next generation human computer interfaces.
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