ABSTRACT
Eyegaze is one of an alternative input methods. Nowadays, the videoculography (VOG) is the most suitable for this purpose. Eye pupil center position is necessary for evaluation of gaze direction. The novel pupil center co-ordinates extraction method was proposed. The method exploits averaging of pupil edge co-ordinates in the same scan line. Obtained points are aproximated by line. Pupil center is estimated as intersection of vertical and horizontal lines. Accuracy of method was tested using synthetic eye images. The novel method accuracy is similar to one of approximation by circle method, when an eye is looking straight a head. The proposed method has better computational effectiveness and smaller errors in tertiary eye positions. Errors for both methods increase versus noise standard deviation with the same slope. However the influence of noise is small, if region between iris and pupil is sharp.
- Hutchinson, T. Human-computer interaction using eyegaze input. IEEE Transactions on Systems, Man and Cybernetics, 19 (1989), 1527--1534.Google ScholarCross Ref
- Zhai, S. What's in the Eyes for Attentive Input. Communications of the ACM, 46, 3, (2003), 34--39. Google ScholarDigital Library
- Robinson, D. A. A method of measuring eye movements using a scleral search coil in a magnetic field. IEEE Transactions on Biomedical Engineering, 10 (1963), 137--145.Google ScholarCross Ref
- Mulligan, J. B. Image processing for improved eye-tracking accuracy. Behav Res Methods Instrum Comput. 29, 1 (1997), 54--65.Google ScholarCross Ref
- Zhu, J., Yang, J. Subpixel Eye-Gaze Tracking. Proc. AFGR02, IEEE (2002), 131--136. Google ScholarDigital Library
- Ohno, T., Mukawa, N., Yoshikawa, A. Free-gaze: a gaze tracking system for everyday gaze interaction. Proc. ETRA-2002, ACM Press (2002), 125--132. Google ScholarDigital Library
- Zhu, Z., Fujimura, K., Ji, Q. Real-time eye detection and tracking under various light conditions. Proc. ETRA-2002, ACM Press (2002), 139--144. Google ScholarDigital Library
- Chaudhuri, B. B., Kundu, P. Optimum circular fit to weighted data in multidimensional space. Pattern Recognition Letters, 14, 1 (1993), 1--6. Google ScholarDigital Library
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