Rapid calibration method for head-mounted eye-tracker

Pengxiang Xue; Changyuan Wang; Qun Lee; Guangyi Jiang; Gongpu Wu

doi:10.1117/12.3025987

21 February 2024 Rapid calibration method for head-mounted eye-tracker

Pengxiang Xue, Changyuan Wang, Qun Lee, Guangyi Jiang, Gongpu Wu

Proceedings Volume 13080, International Conference on Frontiers of Applied Optics and Computer Engineering (AOCE 2024); 130800E (2024) https://doi.org/10.1117/12.3025987
Event: International Conference on Frontiers of Applied Optics and Computer Engineering, 2024, Kunming, China

Abstract

Head-mounted eye-tracking instruments are important devices for sports and human factors research, and their calibration is a more tedious task due to the varied morphology of the human head as well as wear differences. In order to improve the calibration efficiency, we innovatively proposed a Z-shaped moving target instead of a fixed target in our self-research for the calibration of the wearable eye-tracking device, which improved the time needed for calibration from 100 seconds to less than 30 seconds. In addition, in order to reduce the calibration error caused by the user's head movement during the calibration, the world camera image is feature-matched, and the virtual optic target is computed instead of the recognized optic target, thus eliminating the effect of head movement. In the calibration experiments of nine graduate students, the calibration accuracy was less than 20 pixels, and the average calibration time was about 24 seconds.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Pengxiang Xue, Changyuan Wang, Qun Lee, Guangyi Jiang, and Gongpu Wu "Rapid calibration method for head-mounted eye-tracker", Proc. SPIE 13080, International Conference on Frontiers of Applied Optics and Computer Engineering (AOCE 2024), 130800E (21 February 2024); https://doi.org/10.1117/12.3025987

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KEYWORDS

Calibration

Eye tracking

Eye

Cameras

Head

Displays

Visualization

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