Abstract
Aiming at the problem of poor robustness of gaze estimation in non-contact gaze tracking system, the gaze tracking system of single-camera multi-light source is improved. Based on the algorithm of cross-invariant gaze estimation, the traditional gaze-point calibration algorithm is improved. Based on the structure of the eyeball model, the influence of corneal curvature of the eyeball on the sight placement error is analyzed. For the error caused by the angle between the optic axis and the optical axis, an improved dynamic adaptive calibration algorithm is proposed, which divides the screen into 3 * 3 sub-regions. For each sub-region, a mapping parameter is calculated respectively to form a parameter matrix. The current parameter is an optimal parameter value dynamically obtained from the matrix in real time and the current region parameter is extracted to obtain the final eye-point placement. Experiments show that this method has significant effect on line of sight calibration.
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Zhou, Y., Wang, C., Jia, H. (2019). Study on the Calibration Method of Gaze Point in Gaze Tracking. In: Hung, J., Yen, N., Hui, L. (eds) Frontier Computing. FC 2018. Lecture Notes in Electrical Engineering, vol 542. Springer, Singapore. https://doi.org/10.1007/978-981-13-3648-5_103
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DOI: https://doi.org/10.1007/978-981-13-3648-5_103
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