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NavCog3 in the Wild: Large-scale Blind Indoor Navigation Assistant with Semantic Features

机译:NavCog3在野外:具有语义功能的大型盲室内导航助手

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NavCog3 is a smartphone turn-by-turn navigation assistant system we developed specifically designed to enable independent navigation for people with visual impairments. Using off-the-shelf Bluetooth beacons installed in the surrounding environment and a commodity smartphone carried by the user, NavCog3 achieves unparalleled localization accuracy in real-world large-scale scenarios. By leveraging its accurate localization capabilities, NavCog3 guides the user through the environment and signals the presence of semantic features and points of interest in the vicinity (e.g., doorways, shops).To assess the capability of NavCog3 to promote independent mobility of individuals with visual impairments, we deployed and evaluated the system in two challenging real-world scenarios. The first scenario demonstrated the scalability of the system, which was permanently installed in a five-story shopping mall spanning three buildings and a public underground area. During the study, 10 participants traversed three fixed routes, and 43 participants traversed free-choice routes across the environment. The second scenario validated the system's usability in the wild in a hotel complex temporarily equipped with NavCog3 during a conference for individuals with visual impairments. In the hotel, almost 14.2h of system usage data were collected from 37 unique users who performed 280 travels across the environment, for a total of 30,200m traversed.
机译:NavCog3是我们专门开发的智能手机逐步导航助手系统,旨在为视力障碍者提供独立导航。使用安装在周围环境中的现成蓝牙信标和用户携带的商用智能手机,NavCog3在现实世界的大规模场景中实现了无与伦比的定位精度。通过利用其精确的定位功能,NavCog3可以引导用户穿越环境,并发出语义特征和附近(例如,门口,商店等)兴趣点的信号。评估NavCog3促进具有视觉效果的个人独立移动的能力缺陷,我们在两个具有挑战性的实际场景中部署和评估了该系统。第一种情况展示了该系统的可伸缩性,该系统永久安装在一个跨越三座建筑物和一个公共地下区域的五层购物中心中。在研究过程中,有10名参与者横穿了3条固定路线,有43名参与者横穿了整个环境的自由选择路线。第二种情况验证了该系统在视力障碍者会议期间在临时装有NavCog3的酒店大楼中在野外的可用性。在酒店中,从37位唯一用户收集了近14.2h的系统使用数据,这些用户在整个环境中进行了280次旅行,遍历了30,200m。

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