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Proceedings Paper

A new mapping function in table-mounted eye tracker
Author(s): Qinqin Tong; Xiao Hua; Jian Qiu; Kaiqing Luo; Li Peng; Peng Han
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Paper Abstract

Eye tracker is a new apparatus of human-computer interaction, which has caught much attention in recent years. Eye tracking technology is to obtain the current subject’s "visual attention (gaze)” direction by using mechanical, electronic, optical, image processing and other means of detection. While the mapping function is one of the key technology of the image processing, and is also the determination of the accuracy of the whole eye tracker system. In this paper, we present a new mapping model based on the relationship among the eyes, the camera and the screen that the eye gazed. Firstly, according to the geometrical relationship among the eyes, the camera and the screen, the framework of mapping function between the pupil center and the screen coordinate is constructed. Secondly, in order to simplify the vectors inversion of the mapping function, the coordinate of the eyes, the camera and screen was modeled by the coaxial model systems. In order to verify the mapping function, corresponding experiment was implemented. It is also compared with the traditional quadratic polynomial function. And the results show that our approach can improve the accuracy of the determination of the gazing point. Comparing with other methods, this mapping function is simple and valid.

Paper Details

Date Published: 12 January 2018
PDF: 10 pages
Proc. SPIE 10620, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 106200B (12 January 2018); doi: 10.1117/12.2295594
Show Author Affiliations
Qinqin Tong, South China Normal Univ. (China)
Xiao Hua, South China Normal Univ. (China)
Jian Qiu, South China Normal Univ. (China)
Kaiqing Luo, South China Normal Univ. (China)
Li Peng, South China Normal Univ. (China)
Peng Han, South China Normal Univ. (China)


Published in SPIE Proceedings Vol. 10620:
2017 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology
Guohai Situ; Xun Cao; Wolfgang Osten; Liquan Dong, Editor(s)

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