Wearable pupil position detection system utilizing dye-sensitized photovoltaic devices
Wearable pupil position detection system utilizing dye-sensitized photovoltaic devices
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DOI：
10.1016/j.sna.2007.10.074
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发表时间：
2008-07-01
影响因子：
4.6
通讯作者：
Miki, N.
中科院分区：
文献类型：
--
作者：
Shigeoka, T.;Ninomiya, T.;Miki, N.
视线 (LOS) 检测具有多种应用，例如老年人或残疾人的通信工具、辅助驾驶员以及交通标志的有效定位。为了实现这样有前景的应用，强烈需要一种不限制用户活动、不造成精神压力的LOS检测系统。 LOS可以通过分别结合人脸和眼睛的方向来获得，其中瞳孔位置和运动的检测是一项关键技术。在本文中，我们提出了一种新型可穿戴瞳孔位置检测系统，通过使用染料敏化光伏器件，对用户的身体和精神干扰最小。后者是透明的，并根据入射光强度产生电压。该系统将这些设备排列在可佩戴眼镜上，检测瞳孔和眼白反射光的差异，从而确定瞳孔的位置。它可以像眼镜一样佩戴，这意味着它不会干扰用户的活动或视力。更重要的是，它涉及最小的身体和心理压力。我们制造了光伏器件并证明了其确定瞳孔位置的可行性。我们发现可以通过减小设备尺寸来满足 100 ms 的反应时间要求，并通过排列设备来提高瞳孔位置检测的准确性。 (c) 2007 Elsevier B.V. 保留所有权利。
Detection of the line-of-sight (LOS) has a variety of applications, such as communication tools for elderly or disabled people, assisting drivers., and effective location of traffic signs. To realize such promising applications, there is strong demand for an LOS detection system that does not restrict users' activities and inflicts no mental stress. The LOS can be obtained by combining the directions of the face and eyes, respectively, where the detection of location and motion of the pupils is a critical technology. In this paper, we propose a novel wearable pupil position detection system, featuring minimum disturbance to users, both physically and mentally, via the use of dye-sensitized photovoltaic devices. These latter are transparent and generate voltage according to the incident light intensity. Arraying the devices on wearable eyeglasses, this system detects the difference in the reflection light from the pupil and the white of the eye and hence determines the position of the pupil. It is wearable as an eyeglass, meaning it does not disturb users' activities or eyesight. More importantly, it involves minimal physical and psychological stress. We fabricated the photovoltaic device and demonstrated their feasibility to determine the location of the pupil. We found it possible to meet the required reaction time of 100 ms by reducing the size of the device and to improve the accuracy of pupil location detection by arraying the devices. (c) 2007 Elsevier B.V. All rights reserved.