IEEE Trans Vis Comput Graph. 2011 Jul;17(7):900-12. doi: 10.1109/TVCG.2010.113. Epub 2010 Aug 26.
In this paper, we propose a wide-view parallax-free eye-mark recorder with a hyperboloidal half-silvered mirror and a gaze estimation method suitable for the device. Our eye-mark recorder provides a wide field-of-view video recording of the user's exact view by positioning the focal point of the mirror at the user's viewpoint. The vertical angle of view of the prototype is 122 degree (elevation and depression angles are 38 and 84 degree, respectively) and its horizontal view angle is 116 degree (nasal and temporal view angles are 38 and 78 degree, respectively). We implemented and evaluated a gaze estimation method for our eye-mark recorder. We use an appearance-based approach for our eye-mark recorder to support a wide field-of-view. We apply principal component analysis (PCA) and multiple regression analysis (MRA) to determine the relationship between the captured images and their corresponding gaze points. Experimental results verify that our eye-mark recorder successfully captures a wide field-of-view of a user and estimates gaze direction with an angular accuracy of around 2 to 4 degree.
在本文中，我们提出了一种带有双曲半反镜的宽视场无视差眼标记记录器和一种适用于该设备的注视估计方法。我们的眼标记记录器通过将镜子的焦点定位在用户的视点上，为用户的准确视图提供了宽视场的视频记录。原型的垂直视角为 122 度（仰角和俯角分别为 38 度和 84 度），水平视角为 116 度（鼻侧和颞侧视角分别为 38 度和 78 度）。我们为我们的眼标记记录器实现并评估了一种注视估计方法。我们使用基于外观的方法来支持我们的眼标记记录器的宽视场。我们应用主成分分析（PCA）和多元回归分析（MRA）来确定捕获的图像与其相应注视点之间的关系。实验结果验证了我们的眼标记记录器成功地捕捉到了用户的宽视场，并以大约 2 到 4 度的角度精度估计了注视方向。
