| 基于单相机双光源的视线估计 |
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| 引用本文： | 张太宁,白晋军,孟春宁,常胜江. 基于单相机双光源的视线估计[J]. 光电子．激光, 2012, 0(10): 1990-1995 |
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| 作者姓名： | 张太宁 白晋军 孟春宁 常胜江 |
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| 作者单位： | 南开大学现代光学研究所;天津工业大学电子与信息工程学院 |
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| 基金项目： | 国家自然科学基金(61171027);教育部博士点基金(20090031110033)资助项目 |
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| 摘 要： | 提出一种角膜反射和虹膜中心估计算法相结合的视线估计方法,使用单相机、双辅助光源构建了头部可自由运动的视线估计系统。在准确提取两个反射光斑位置和虹膜中心坐标的基础上,以多项式函数的形式建立视线特征向量与测试屏上注视点坐标之间的映射关系。实验结果表明,系统在水平方向上视线估计的平均误差为0.91°,在垂直方向上平均误差为1.1°,达到了良好的视线估计效果。
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| 关 键 词： | 视线估计 角膜反射 虹膜中心 多项式函数 |
Eye-gaze tracking based on one camera and two light sources |
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| ZHANG Tai-ning,BAI Jin-jun,MENG Chun-ning and CHANG Sheng-jiang. Eye-gaze tracking based on one camera and two light sources[J]. Journal of Optoelectronics·laser, 2012, 0(10): 1990-1995 |
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| Authors: | ZHANG Tai-ning BAI Jin-jun MENG Chun-ning CHANG Sheng-jiang |
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| Affiliation: | 1(1.Institute of Modern Optics,Nankai University,Tianjin 300071,China;2.School of Electronics and Information Engineering,Tianjin Polytechnic University,Tianjin 300387,China) |
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| Abstract: | In this paper,we propose an eye-gaze tracking method based on the corneal reflections and iris center estimation.We use one camera and two light sources to alleviate the restriction on the user’s head movement.After the corneal reflections and the iris center have been precisely located,we use polynomial function to describe the mapping relationship between the feature vector and the coordinate of gazing point on the test board.Our experiment shows that the average error of the implemented system is approximately 0.91° in horizontal direction and 1.1° in vertical direction.The performance of our algorithm proves the validity of the proposed eye-gaze tracking system. |
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| Keywords: | eye-gaze tracking corneal reflection iris center polynomial function |
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