Abstract
In the pupil-corneal reflection detection-based eye-gaze detection method, glasses reflection of near-infrared LED light sources for producing the corneal reflection is misdetected as the pupil when a user wears eyeglasses. To improve the robustness of the pupil detection, we propose novel pupil searching and tracking methods in the gaze detection system using two stereo-calibrated cameras. The pupil searching method first chooses the true pupils from all stereo-matched pupil candidates using the suitable depth range condition, and second chooses the true pair of the right and left pupils under the constraint of the suitable 3-D interpupillary distance. Even if one pupil is not detected in the image of either camera owing to the glasses reflections, the pupil tracking method estimates the 3-D coordinates of the undetected pupil by using the constant interpupillary distance and the temporal continuity of the 3-D coordinates of the moving pupil. The experimental results show that the accuracy of pupil searching and tracking was better than that of the conventional one-camera method.
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Ebisawa, Y., Fukumoto, K.: Head-Free, Remote Gaze Detection System Based on Pupil-Corneal Reflection Method with Using Two Video Cameras – One-Point and Nonlinear Calibrations –. In: Proceeding of 15th International Conference, HCI International (to appear, 2013)
Ebisawa, Y., Nakashima, A.: Increasing Precision of Pupil Position Detection Using the Corneal Reflection. The Institute of Image Information and Television Engineers 62(7), 1122–1126 (2008)
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Ebisawa, Y., Fukumoto, K., Yamaguchi, H. (2013). Pupil Detection Using Stereo-Matching Method and a Constant Interpupillary Distance Condition for a Solution of Glasses Reflection Problem in the Video-Based Gaze Detection System. In: Stephanidis, C. (eds) HCI International 2013 - Posters’ Extended Abstracts. HCI 2013. Communications in Computer and Information Science, vol 373. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39473-7_118
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DOI: https://doi.org/10.1007/978-3-642-39473-7_118
Publisher Name: Springer, Berlin, Heidelberg
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