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

  • Yoshinobu Ebisawa
  • Kiyotaka Fukumoto
  • Hiroki Yamaguchi
Part of the Communications in Computer and Information Science book series (CCIS, volume 373)

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.

Keywords

Pupil detection Gaze detection Head movement Glasses reflection 

References

  1. 1.
    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)Google Scholar
  2. 2.
    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)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Yoshinobu Ebisawa
    • 1
  • Kiyotaka Fukumoto
    • 1
  • Hiroki Yamaguchi
    • 1
  1. 1.Graduate School of EngineeringShizuoka UniversityHamamatsuJapan

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