Digital sign system for indoor wayfinding for the visually impaired

B. S. Tjan, P. J. Beckmann, R. Roy, N. Giudice, G. E. Legge

Research output: Chapter in Book/Report/Conference proceedingConference contribution

32 Scopus citations

Abstract

Mobility challenges and independent travel are major concerns for blind and visually impaired pedestrians [1][2]. Navigation and wayfinding in unfamiliar indoor environments are particularly challenging because blind pedestrians do not have ready access to building maps, signs and other orienting devices. The development of assistive technologies to aid wayfinding is hampered by the lack of a reliable and cost-efficient method for providing location information in an indoor environment. Here we describe the design and implementation of a digital sign system based on low-cost passive retro-reflective tags printed with specially designed patterns that can be readily detected and identified by a hand-held camera and machine-vision system. Performance of the prototype showed the tag detection/recognition system could cope with the real-world environment of a typical building.

Original languageEnglish (US)
Title of host publication2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, CVPR 2005 - Workshops
PublisherIEEE Computer Society
ISBN (Electronic)0769526608
DOIs
StatePublished - 2005
Event2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, CVPR 2005 - Workshops - San Diego, United States
Duration: Sep 21 2005Sep 23 2005

Publication series

NameIEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops
Volume2005-September
ISSN (Print)2160-7508
ISSN (Electronic)2160-7516

Conference

Conference2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, CVPR 2005 - Workshops
Country/TerritoryUnited States
CitySan Diego
Period9/21/059/23/05

Bibliographical note

Funding Information:
VIII. ACKNOWLEDGMENTS Supported by NIH Grant EY02857 and NIDRR grant H133A011903.

Publisher Copyright:
© 2005 IEEE Computer Society. All rights reserved.

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