Remote Point-of-Gaze Estimation with Free Head Movements Requiring a Single-Point Calibration
Remote Point-of-Gaze Estimation with Free Head Movements Requiring a Single-Point Calibration
复制标题
需要单点校准的自由头部运动的远程注视点估计
DOI：
10.1109/iembs.2007.4353353
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
M. Eizenman
中科院分区：
文献类型：
--
作者：
E. D. Guestrin;M. Eizenman
本文描述了一种远程非接触凝视点（POG）估计方法，该方法允许自由头部运动，并且需要一个简单的校准程序，其中受试者必须只注视一个点。这种方法使用瞳孔中心和至少两个角膜反射（光源的虚拟图像），这些反射是由至少两个摄像头捕获的眼睛图像估计出来的。实验结果表明，在1 dm3的体积范围内，原型系统可以承受头部运动，其RMS POG估计误差约为0.6-1度的视角。该系统可以实现婴儿的应用，否则，现有的POG估计方法不可能实现，这些方法通常需要多点校准程序。
This paper describes a method for remote, non- contact point-of-gaze (POG) estimation that tolerates free head movements and requires a simple calibration procedure in which the subject has to fixate only on a single point. This method uses the centers of the pupil and at least two corneal reflections (virtual images of light sources) that are estimated from eye images captured by at least two cameras. Experimental results obtained with a prototype system that tolerates head movements in a volume of about 1 dm3, exhibited RMS POG estimation errors of approximately 0.6-1deg of visual angle. This system can enable applications with infants that, otherwise, would not be possible with existing POG estimation methods, which typically require multiple-point calibration procedures.