A gaze tracking system overcoming influences of head movements

作者：Qin, Hua-Biao; Yan, Wei-Hong; Wang, Xin-Liang; Yu, Xiang-Yu

来源：Acta Electronica Sinica, 2013, 41(12): 2403-2408.

DOI：10.3969/j.issn.0372-2112.2013.12.013

• Corneal reflection
• Gaze tracking system
• Head movements
• Point-matching
• Pupil
• Real time performance
• Region of interest
• Single cameras

A gaze tracking system based on single camera and four IR light sources is proposed in this paper. With pupil's center and four reflection centers on corneal generated from the IR light sources, a novel pupil-corneal reflection vector is constructed, which is invariant to head movements. In addition, the region of interest is applied to improve the speed of eye location;template matching and convex hull are used to locate pupil's center;point matching is used to identify the reflection centers. These methods guarantee the real-time performance and accuracy of the gaze tracking. The experiment results demonstrate the improved accuracy and the real-time performance of the system with less constraint on head movements.

• 出版日期2013-12
• 单位华南理工大学