Zhengyou Zhang
ABSTRACT
The cross-ratio approach has recently attracted increasing attention in eye-gaze tracking due to its simplicity in setting up a tracking system. Its accuracy, however, is lower than that of the model-based approach, and substantial efforts have been devoted to improving its accuracy. Binocular fixation is essential for humans to have good depth perception, and this paper presents a technique leveraging this constraint. It is used in two ways: First, in estimating jointly the homography matrices for both eyes, and second, in estimating the eye gaze itself. Experimental results with both synthetic and real data show that the proposed approach produces significantly better results than using a single eye and also better than averaging the independent results from the two eyes.
- Coutinho, F. L., and Morimoto, C. H. 2013. Improving head movement tolerance of cross-ratio based eye trackers. In International Journal on Computer Vision, vol. 101, 259--481. Google Scholar
Digital Library
- Guestrin, E. D., and Eizenman, M. 2006. General theory of remote gaze estimation using the pupil center and corneal reflections. IEEE Transactions on Biomedical Engineering 53, 6, 1124--1133.Google ScholarCross Ref
- Hansen, D. W., and Ji, Q. 2010. In the eye of the beholder: A survey of models for eyes and gaze. Pattern Analysis and Machine Intelligence, IEEE Transactions on 32, 3, 478--500. Google ScholarDigital Library
- Hansen, D. W., Agustin, J. S., and Villanueva, A. 2010. Homography normalization for robust gaze estimation in uncalibrated setups. In Proceedings of the 2010 Symposium on Eye-Tracking Research & Applications, ACM, 13--20. Google ScholarDigital Library
- Kang, J. J., Guestrin, E., MacLean, W., and Eizenman, M. 2007. Simplifying the cross-ratios method of point-of-gaze estimation. In 30th Canadian medical and biological engineering conference (CMBEC30).Google Scholar
- Kang, J. J., Eizenman, M., Guestrin, E. D., and Eizenman, E. 2008. Investigation of the cross-ratios method for point-of-gaze estimation. IEEE Transactions on Biomedical Engineering 55, 9, 2293--2302.Google ScholarCross Ref
- Morimoto, C. H., and Mimica, M. R. 2005. Eye gaze tracking techniques for interactive applications. Computer Vision and Image Understanding 98, 1, 4--24. Google ScholarDigital Library
- Pantic, M., Pentland, A., Nijholt, A., and Huang, T. S. 2007. Human computing and machine understanding of human behavior: a survey. 47--71. Google ScholarDigital Library
- Yoo, D. H., Kim, J. H., Lee, B. R., and Chung, M. J. 2002. Non-contact eye gaze tracking system by mapping of corneal reflections. In IEEE International Conference on Automatic Face and Gesture Recognition, IEEE, 94--99. Google ScholarDigital Library
- Zhai, S., Morimoto, C., and Ihde, S. 1999. Manual and gaze input cascaded (magic) pointing. In Proc. ACM SIGCHI conference on Human factors in computing systems, 246--253. Google ScholarDigital Library
Index Terms
- Improving cross-ratio-based eye tracking techniques by leveraging the binocular fixation constraint
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