运动物体的头戴式视线追踪控制系统设计

设计了一种基于嵌入式的头戴式视线追踪控制系统.它将实际运动物体作为控制对象,以人眼为控制源,采用图像处理算法和坐标映射模型,实现视线追踪技术.通过质心检测和椭圆拟合算法的比较与优化,系统定位瞳孔中心的角度误差精确到1.4°以内,再利用最小二乘法进行视线空间坐标变换,最终控制运动对象移动到注视点.实验结果表明,人眼距离被控对象2 m内时,被控对象的定点误差在5 cm内,系统响应时间在0.3 s内,满足用户日常操作要求.

Head Mounted Eye Tracking Control System of Moving Object

In the paper,a head mounted eye tracking control system based on embedded system is designed.It takes actual moving object as the control object and human eye as the control source,then it uses image processing algorithm and coordinate mapping model to realize the eye tracking technology.Through the optimization and synthesis of centroid detectionand ellipse fitting algorithm,the accuracy of locating the pupil center of the system is less than 1.4°.By using the least square method to coordinate the line of sight space,this system can finally control the moving parts to the specified points.The experiment results show that the fixed point error of the controlled object is less than 5 cm when the human eye is within 2 m of the controlled object,the system response time is less than 0.3 s,the system can fully meet the users daily operational requirements.