Extending the Measurement Angle of a Gaze Estimation Method Using an Eye Model Expressed by a Revolution about the Optical Axis of the Eye
Extending the Measurement Angle of a Gaze Estimation Method Using an Eye Model Expressed by a Revolution about the Optical Axis of the Eye
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DOI：
10.1587/transinf.2020edp7072
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发表时间：
2021-05-01
影响因子：
0.7
通讯作者：
Arai, Hisashi
中科院分区：
文献类型：
--
作者：
Nagamatsu, Takashi;Hiroe, Mamoru;Arai, Hisashi
由围绕眼睛的光轴的旋转表示的眼睛模型是用于3D注视估计方法中的最精确的模型之一。基于眼睛模型使用两个相机的先前注视估计方法的测量范围受到注视与两个相机的光轴之间的两个角度中的较大者的限制。当超过眼睛的旋转角度的某个极限时，先前的方法不能计算注视。在本文中，我们显示的反射特性的表面上的眼睛从两个光源，当眼睛旋转。然后，我们提出了一种方法，扩展的旋转角度的眼睛的3D凝视估计基于这个模型。所提出的方法使用在先前方法中未使用的反射。我们开发了一个实验性的视线跟踪系统的宽投影屏幕和实验验证所提出的方法与20名参与者。实验结果表明，该方法可以测量更多的人的注视，与以前的方法相比，提高了准确性。
An eye model expressed by a revolution about the optical axis of the eye is one of the most accurate models for use in a 3D gaze estimation method. The measurement range of the previous gaze estimation method that uses two cameras based on the eye model is limited by the larger of the two angles between the gaze and the optical axes of two cameras. The previous method cannot calculate the gaze when exceeding a certain limit of the rotation angle of the eye. In this paper, we show the characteristics of reflections on the surface of the eye from two light sources, when the eye rotates. Then, we propose a method that extends the rotation angle of the eye for a 3D gaze estimation based on this model. The proposed method uses reflections that were not used in the previous method. We developed an experimental gaze tracking system for a wide projector screen and experimentally validated the proposed method with 20 participants. The result shows that the proposed method can measure the gaze of more number of people with increased accuracy compared with the previous method.