Research on Feature Points Positioning in Non-contact Eye-gaze Tracking System

摘要：

The accuracy and the real time ability of positioning the feature points, including the four reference glints and the center of the eye pupil, are essential to the eye-gaze tracking system based on the crossratio. In the paper, in order to handle the two issues in the images to be processed, that is, the similar gray values and the low resolution, an algorithm of feature points positioning with strong adaptability is proposed, namely, using the improved Otsu method for detecting the glints, and adopting a method combining emitting rays with ellipse fitting for positioning the center of the pupil. Some experiments are performed on the non-contact eye-gaze tracking system on a VC ++ 6.0 platform, and the results show that: when the eye is located 70cm in front of the screen (33cm ×26cm), 30 ×25 points can be distinguished, and the processing requires only 16ms on average.

关键词： eye-gaze tracking feature points positioning the Otsu method ellipse fitting

作者: Bei Yan Lifeng Gao Xigong Zhang

作者单位: School of Automation Science and Electrical Engineering,Beihang University Beijing,100083,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 4270-4273

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）