An indoor navigation system for the visually impaired.

An indoor navigation system for the visually impaired.
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DOI:
10.3390/s120608236
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发表时间:
2012
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Ochoa SF
Ochoa SF
中科院分区:
其他
文献类型:
--
作者:
Guerrero LA;Vasquez F;Ochoa SF

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对于严重视障的人来说,在室内环境中导航是非常具有挑战性的,特别是在第一次访问的空间。已经提出了几种解决方案来应对这一挑战。尽管它们中的一些在实际场景中被证明是有用的,但它们涉及到重要的部署工作,或者使用对于盲人用户来说不自然的构件。本文介绍了一种室内导航系统,该系统将可用性作为最大化的质量要求来设计。这一解决方案使人们能够识别一个人的位置,并计算他的运动速度和方向。使用这些信息,系统确定用户的轨迹,定位该路线上可能的障碍物,并向用户提供导航信息。该解决方案已经使用两个实验场景进行了评估。虽然结果仍然不足以提供强有力的结论,但它们表明该系统适合于指导视障人士通过未知的建成环境。
Navigation in indoor environments is highly challenging for the severely visually impaired, particularly in spaces visited for the first time. Several solutions have been proposed to deal with this challenge. Although some of them have shown to be useful in real scenarios, they involve an important deployment effort or use artifacts that are not natural for blind users. This paper presents an indoor navigation system that was designed taking into consideration usability as the quality requirement to be maximized. This solution enables one to identify the position of a person and calculates the velocity and direction of his movements. Using this information, the system determines the user's trajectory, locates possible obstacles in that route, and offers navigation information to the user. The solution has been evaluated using two experimental scenarios. Although the results are still not enough to provide strong conclusions, they indicate that the system is suitable to guide visually impaired people through an unknown built environment.
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