High-speed eye tracking based on a synchronized image acquisition mechanism by dual-ring infrared lighting source

Xiao Zhang; Lihui Wang; Yuan He; Zhiwei Mou; Yiqi Cao

doi:10.1117/12.2686717

27 November 2023 High-speed eye tracking based on a synchronized image acquisition mechanism by dual-ring infrared lighting source

Xiao Zhang, Lihui Wang, Yuan He, Zhiwei Mou, Yiqi Cao

Author Affiliations +

Proceedings Volume 12766, Advanced Optical Imaging Technologies VI; 127660F (2023) https://doi.org/10.1117/12.2686717
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

It is a challenge for conventional monocular-camera single-light source eye tracking methods to achieve high-speed eye tracking. Human gaze motion is a high-speed and miniature eye movement. Eye tracking requires a high-speed sampling frequency. In this work, an eye tracking method was proposed to overcomes the above limitation. The dual-ring infrared lighting source was designed to achieve bright and dark pupils in high-speed. The eye tracking method used a dual-ring infrared lighting source and synchronized triggers for the even and odd camera frames to capture bright and dark pupils. A pupillary corneal reflex was calculated by the center coordinates of the Purkinje spot and the pupil. A map function was established to map the relationship between pupillary corneal reflex and gaze spots. The gaze coordinate was calculated based on the mapping function. The detection time of each frame was less than five milliseconds, which achieved the purpose of high-speed eye tracking of the human gaze.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiao Zhang, Lihui Wang, Yuan He, Zhiwei Mou, and Yiqi Cao "High-speed eye tracking based on a synchronized image acquisition mechanism by dual-ring infrared lighting source", Proc. SPIE 12766, Advanced Optical Imaging Technologies VI, 127660F (27 November 2023); https://doi.org/10.1117/12.2686717

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