Crosswatch: a System for Providing Guidance to Visually Impaired Travelers at Traffic Intersections.
Crosswatch: a System for Providing Guidance to Visually Impaired Travelers at Traffic Intersections.
复制标题
Crosswatch：为交通路口的视障旅行者提供指导的系统。
DOI：
10.1108/17549451311328808
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Shen,Huiying
中科院分区：
文献类型：
--
作者：
Coughlan,JamesM;Shen,Huiying
目的-本文的目的是描述“Crosswatch”项目的最新进展，该项目是一种基于智能手机的系统，旨在为交通路口的盲人和视障旅行者提供指导。基于过去在Crosswatch功能上的工作，以帮助用户实现与人行横道的正确对齐，并读取步行灯的状态，以了解何时该过马路，作者概述了Crosswatch现在采取的方向，以帮助实现其成为实用系统的潜力：也就是说，用其他信息源增强计算机视觉，包括地理信息系统（GIS）和传感器数据，和推断用户的位置更精确地比可能通过GPS单独，提供一个更大的范围内的信息，交通路口的行人。设计/方法/方法，该文件总结了过去的进展，并介绍了详细的发展新的交叉功能。详细研究了确定用户精确位置所需的一个这样的功能，包括设计一个合适的用户界面来支持这项功能，以及对视障志愿者进行初步测试。结果-新的交叉样本功能的测试结果表明，这项功能是可行的，因为它可以被视障人士使用。研究限制/含义-虽然对新的交叉样本功能进行的测试是初步的，但测试结果表明了几种可能的改进，有待于将来探索。实际含义-本文所述的结果表明，交叉样本系统所使用的必要技术正在迅速成熟，这意味着该系统有一个很好的机会，成为实用在不久的将来。独创性/价值-该文件解决了一个创新的解决方案，盲人和视力受损的旅客所面临的一个关键问题，这有可能极大地改善这些人的独立旅行。
Purpose–The purpose of this paper is to describe recent progress on the “Crosswatch” project, a smartphone‐based system developed for providing guidance to blind and visually impaired travelers at traffic intersections. Building on past work on Crosswatch functionality to help the user achieve proper alignment with the crosswalk and read the status of walk lights to know when it is time to cross, the authors outline the directions Crosswatch is now taking to help realize its potential for becoming a practical system: namely, augmenting computer vision with other information sources, including geographic information systems (GIS) and sensor data, and inferring the user's location much more precisely than is possible through GPS alone, to provide a much larger range of information about traffic intersections to the pedestrian.Design/methodology/approach–The paper summarizes past progress on Crosswatch and describes details about the development of new Crosswatch functionalities. One such functionality, which is required for determination of the user's precise location, is studied in detail, including the design of a suitable user interface to support this functionality and preliminary tests of this interface with visually impaired volunteer subjects.Findings–The results of the tests of the new Crosswatch functionality demonstrate that the functionality is feasible in that it is usable by visually impaired persons.Research limitations/implications–While the tests that were conducted of the new Crosswatch functionality are preliminary, the results of the tests have suggested several possible improvements, to be explored in the future.Practical implications–The results described in this paper suggest that the necessary technologies used by the Crosswatch system are rapidly maturing, implying that the system has an excellent chance of becoming practical in the near future.Originality/value–The paper addresses an innovative solution to a key problem faced by blind and visually impaired travelers, which has the potential to greatly improve independent travel for these individuals.