Visible-Light Based Gaze Tracking with Image Enhancement Pre-processing for Wearable Eye Trackers

被引：0
|
作者：
Liu, Ting-Lun [1 ]
Fan, Chih-Peng [1 ]
机构：
[1] Natl Chung Hsing Univ, Dept Elect Engn, Taichung, Taiwan
来源：
2017 IEEE 6TH GLOBAL CONFERENCE ON CONSUMER ELECTRONICS (GCCE) | 2017年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this study, a visible-light based fast iris ellipse fitting based gaze tracking scheme is developed for wearable eye trackers. First, after image enhancement pre-processing of eye images, the two-level binarization identifies the iris contour, and the candidate points for ellipse fittings are selected from the binaried iris profile. Next, by fast Random Sample Consensus (RANSAC) ellipse fitting, the iris centers are predicted, and finally the gaze tracking acts effectively when the calibration is done. In our experiments, the averaged estimation errors of iris centers are smaller than 7 pixels. At training mode, the indoor averaged horizontal and vertical accuracies of gaze tracking are 1.80 and 1.59 degrees, respectively. At testing mode, the indoor averaged horizontal and vertical accuracies of gaze tracking are 1.83 and 1.96 degrees, respectively. Besides, the outdoor averaged accuracies of gaze tracking are less than 2.5 degrees. The proposed main function executes up to 83 frames/sec by a personal computer at 3.4GHz working frequency.
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