Camera-based mobile electronic travel aids support for cognitive mapping of unknown spaces
Camera-based mobile electronic travel aids support for cognitive mapping of unknown spaces
复制标题
基于摄像头的移动电子旅行辅助工具支持未知空间的认知绘图
DOI：
10.1145/3098279.3098563
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
G. Weber
中科院分区：
文献类型：
--
作者：
Limin Zeng;Markus Simros;G. Weber
盲人和视障人士经常使用“物体对物体”的策略，通过手杖或身体的身体接触来探索未知的空间。基于摄像头的移动电子旅行辅助器（ETA）不仅在检测障碍物时提供比白手杖更大的工作范围，而且使用户能够在不进行身体接触的情况下识别感兴趣的物体。在本文中，我们对七名视障参与者进行了案例研究，研究他们如何使用基于深度感应相机的 ETA 来探索未知空间，以及如何重建周围物体的认知映射。我们发现基于摄像头的移动 ETA 可以帮助视障用户有效地探索周围环境，而无需身体接触。此外，我们最初的研究表明，ETA 用户改变了探索周围环境的策略，从使用“对象到对象”方法转变为“观察点到观察点”策略。与白手杖使用者相比，参与者改善了对周围环境的认知图。
Blind and visually impaired people often use an "object-to-object" strategy to explore unknown spaces through physical contact via their canes or bodies. Camera-based mobile electronic travel aids (ETAs) not only offer a larger work range than a white cane while detecting obstacles, but also enable users to recognise objects of interest without physical contact. In this paper, we conducted a case study with seven visually impaired participants, to investigate how they use a depth-sensing camera-based ETA for exploring unknown spaces, and how they reconstruct cognitive mappings of surrounding objects. We found that camera-based mobile ETAs would assist visually impaired users to explore the surrounding environment effectively and without physical contact. Furthermore, our original study indicates ETA users change their strategies for exploring the surrounding environment from using an "object-to-object" approach to an "observation-point to observation-point" strategy. Participants improved their cognitive mappings of the surrounding environment compared to white cane users.