An indoor navigation system to support the visually impaired
| Autor: | Patrick A. Lichter, Timothy H. Riehle, Nicholas A. Giudice |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Computer science
Visually impaired business.industry Personal navigation device Control (management) Biomedical Engineering Navigation system Equipment Design Walking Blindness Mobile robot navigation User-Computer Interface Software Microcomputers Sensory Aids Humans Canes Computer vision Artificial intelligence Visual Fields business Algorithms Visually Impaired Persons |
| Zdroj: | 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. |
| DOI: | 10.1109/iembs.2008.4650195 |
| Popis: | Indoor navigation technology is needed to support seamless mobility for the visually impaired. A small portable personal navigation device that provides current position, useful contextual wayfinding information about the indoor environment and directions to a destination would greatly improve access and independence for people with low vision. This paper describes the construction of such a device which utilizes a commercial Ultra-Wideband (UWB) asset tracking system to support real-time location and navigation information. Human trials were conducted to assess the efficacy of the system by comparing target-finding performance between blindfolded subjects using the navigation system for real-time guidance, and blindfolded subjects who only received speech information about their local surrounds but no route guidance information (similar to that available from a long cane or guide dog). A normal vision control condition was also run. The time and distance traveled was measured in each trial and a point-back test was performed after goal completion to assess cognitive map development. Statistically significant differences were observed between the three conditions in time and distance traveled; with the navigation system and the visual condition yielding the best results, and the navigation system dramatically outperforming the non-guided condition. |
| Databáze: | OpenAIRE |
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