Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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User-Calibration Free Gaze Tracking System Model

사용자 캘리브레이션이 필요 없는 시선 추적 모델 연구

  • Ko, Eun-Ji (Division of Digital Media, Ewha Womans University) ;
  • Kim, Myoung-Jun (Division of Digital Media, Ewha Womans University)
  • Received : 2014.04.09
  • Accepted : 2014.05.07
  • Published : 2014.05.31
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Abstract

In remote gaze tracking system using infra-red LEDs, calibrating the position of reflected light is essential for computing pupil position in captured images. However, there are limitations in reducing errors because variable locations of head and unknown radius of cornea are involved in the calibration process as constants. This study purposes a gaze tracking method based on pupil-corneal reflection that does not require user-calibration. Our goal is to eliminate the correction process of glint positions, which require a prior calibration, so that the gaze calculation is simplified.

적외선 조명을 이용한 간접시선추적 시스템에서는 촬영된 이미지에서 동공에 반사된 조명의 위치에 대한 캘리브레이션이 필수적이다. 하지만 안구의 크기나 머리의 위치에 따라 달라질 수도 있는 변수가 캘리브레이션 과정에서 정의된 상수로 계산에 포함되어 있어 오차를 감소시키는데 한계가 있다. 본 논문은 적외선 조명을 사용하면서도, 사용자 캘리브레이션 과정을 생략할 수 있는 방법을 연구한다. 반사각에 의한 글린트(glint)위치 차이에 영향을 받지 않게 하면서, 시스템의 모델과 시선 계산은 단순하게 하여 실시간 연산이 가능하도록 하는 것이 목표이다.

Keywords

References

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  1. Glint Reconstruction Algorithm Using Homography in Gaze Tracking System vol.18, pp.10, 2014, https://doi.org/10.6109/jkiice.2014.18.10.2417