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地图：为视障人士开发新型的移动辅助系统。

The MAPS: Toward a Novel Mobility Assistance System for Visually Impaired People.

机构信息

LITIS Lab, University of Rouen Normandy, 76800 St-Etienne-du-Rouvray, France.

LCIS Lab, University of Grenoble Alpes, 26000 Valence, France.

出版信息

Sensors (Basel). 2022 Apr 26;22(9):3316. doi: 10.3390/s22093316.

DOI:10.3390/s22093316
PMID:35591005
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9131141/
Abstract

This paper introduces the design of a novel indoor and outdoor mobility assistance system for visually impaired people. This system is named the MAPS (Mobility Assistance Path Planning and orientation in Space), and it is based on the theoretical frameworks of mobility and spatial cognition. Its originality comes from the assistance of two main functions of navigation: locomotion and wayfinding. Locomotion involves the ability to avoid obstacles, while wayfinding involves the orientation in space and ad hoc path planning in an (unknown) environment. The MAPS architecture proposes a new low-cost system for indoor-outdoor cognitive mobility assistance, relying on two cooperating hardware feedbacks: the Force Feedback Tablet (F2T) and the TactiBelt. F2T is an electromechanical tablet using haptic effects that allow the exploration of images and maps. It is used to assist with maps' learning, space awareness emergence, path planning, wayfinding and effective journey completion. It helps a VIP construct a mental map of their environment. TactiBelt is a vibrotactile belt providing active support for the path integration strategy while navigating; it assists the VIP localize the nearest obstacles in real-time and provides the ego-directions to reach the destination. Technology used for acquiring the information about the surrounding space is based on vision (cameras) and is defined with the localization on a map. The preliminary evaluations of the MAPS focused on the interaction with the environment and on feedback from the users (blindfolded participants) to confirm its effectiveness in a simulated environment (a labyrinth). Those lead-users easily interpreted the system's provided data that they considered relevant for effective independent navigation.

摘要

本文介绍了一种为视障人士设计的新颖的室内外移动辅助系统。该系统名为 MAPS（空间中移动辅助路径规划和定向），它基于移动性和空间认知的理论框架。其创新性在于辅助导航的两个主要功能：移动和寻路。移动涉及避免障碍物的能力，而寻路则涉及空间定向和在（未知）环境中的临时路径规划。MAPS 架构提出了一种新的用于室内外认知移动辅助的低成本系统，依赖于两个合作的硬件反馈：力反馈平板（F2T）和 TactiBelt。F2T 是一种使用触觉效果的机电平板电脑，允许探索图像和地图。它用于辅助地图学习、空间意识的出现、路径规划、寻路和有效完成旅程。它帮助 VIP 构建其环境的心理地图。TactiBelt 是一条振动触觉带，在导航时为路径整合策略提供积极支持；它帮助 VIP 实时定位最近的障碍物，并提供到达目的地的自我方向。用于获取周围空间信息的技术基于视觉（摄像机），并通过在地图上的定位来定义。MAPS 的初步评估集中在与环境的交互以及用户（蒙住眼睛的参与者）的反馈上，以确认其在模拟环境（迷宫）中的有效性。这些领先用户很容易解释系统提供的数据，他们认为这些数据对于有效独立导航是相关的。

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Tactile innervation densities across the whole body.全身触觉神经密度。
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一种用于增强视障者空间感知的音频触觉感官替代设备的评估。
Optom Vis Sci. 2018 Sep;95(9):757-765. doi: 10.1097/OPX.0000000000001284.
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