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Numerical study on adjusting parameters to improve gaze estimation using planar approximations from electro-oculogram signal voltage ratios

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Abstract

Gaze or eye movements are used as a communication interface in daily life. Herein, we developed a simple method for gaze estimations based on planar approximations of voltage ratios calculated from multiple electro-oculogram signals not affected by drift phenomena, which decrease accuracy. Subsequently, we conducted simulations using an eyeball battery model and investigated the effects of adjusting electrode arrangements, determination coefficients for planar approximations of voltage ratios, and threshold values for angles between simultaneous linear equations, to improve the estimation accuracy and decreased the number of required electrodes. Numerical experiments were used to identify arrangements of six electrodes with errors that were approximately 5° less than those of nine-electrode L-shaped arrangements, indicating improved estimation accuracy with fewer electrodes.

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Acknowledgements

We would like to thank Editage (www.editage.jp) for English language editing.

Funding

This study was supported by JSPS Grant-in Aid for Scientific Research 16K00364.

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Authors and Affiliations

  1. Department of Electrical and Control Systems Engineering, National Institute of Technology, Toyama College, 13 Hongo-machi, Toyama, Japan

    Fumihiko Ishida & Koki Wakata

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  1. Fumihiko Ishida
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  2. Koki Wakata
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Correspondence to Fumihiko Ishida.

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We have no conflicts of interest or relationship with any companies or commercial organizations.

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This study was approved by the research ethics committee of the National Institute of Technology, Toyama College (No. 2).

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This article does not contain any studies with human participants performed by any of the authors.

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Ishida, F., Wakata, K. Numerical study on adjusting parameters to improve gaze estimation using planar approximations from electro-oculogram signal voltage ratios. Biomed. Eng. Lett. 9, 181–187 (2019). https://doi.org/10.1007/s13534-019-00095-y

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  • DOI: https://doi.org/10.1007/s13534-019-00095-y

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