Department of Computer Science and Engineering, University of Bridgeport, Bridgeport, CT 06604, USA.
Sensors (Basel). 2017 Mar 10;17(3):565. doi: 10.3390/s17030565.
The World Health Organization (WHO) reported that there are 285 million visuallyimpaired people worldwide. Among these individuals, there are 39 million who are totally blind. There have been several systems designed to support visually-impaired people and to improve the quality of their lives. Unfortunately, most of these systems are limited in their capabilities. In this paper, we present a comparative survey of the wearable and portable assistive devices for visuallyimpaired people in order to show the progress in assistive technology for this group of people. Thus, the contribution of this literature survey is to discuss in detail the most significant devices that are presented in the literature to assist this population and highlight the improvements, advantages, disadvantages, and accuracy. Our aim is to address and present most of the issues of these systems to pave the way for other researchers to design devices that ensure safety and independent mobility to visually-impaired people.
世界卫生组织（WHO）报告称，全球有 2.85 亿视力障碍者。在这些人中，有 3900 万人完全失明。已经有几个系统被设计用来帮助视力障碍者并提高他们的生活质量。不幸的是，这些系统的功能大多受到限制。在本文中，我们对可穿戴和便携式助视器进行了比较调查，以便展示助视技术在这一人群中的进展。因此，这项文献调查的贡献在于详细讨论文献中提出的帮助这一人群的最重要的设备，并强调改进、优势、劣势和准确性。我们的目的是解决这些系统的大多数问题，为其他研究人员设计确保视力障碍者安全和独立行动能力的设备铺平道路。
