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Comparison of methods presenting contour information to individuals who are blind or visually impaired

Published: 25 October 2010 Publication History

Abstract

Graphs and charts are frequently used in school, work and everyday living. However, traditional techniques of providing this information to individuals who are visually impaired are cumbersome and slow. Refreshable tactile displays have been developed and used to display line graphs, bar graphs and pie charts. In this paper, we investigate the use of a haptic matrix-like display that can produce multiple amplitude levels and multiple frequencies for displaying contour plots. Experiments were performed to compare performance and usability for the two different methods. According to preliminary results, the use of amplitude variation provides the user with a more accurate awareness of contour level differences than frequency variation.

References

[1]
Walker, S. P. and Salisbury, J. K. 2003. Large Haptic Topgraphic Maps: Marsview and the Proxy Graph Algorithm. Symposium on Interactive 3D Graphics, Monterey CA, 83--92.
[2]
Wall, S. and Brewster, S. 2006. Feeling What You Hear: Tactile Feedback for Navigation of Audio Graphs. CHI 2006, Montreal, Canada, April 22-28.
[3]
Wall, S. and Brewster, S. 2006. Tac-tiles: Multimodal Pie Charts for Visually Impaired Users. 4th Nordic Conference on Human-Computer Interaction, Oslo, Norway, 9--18.
[4]
Headley, P. C., and Pawluk, D. T. V. 2010. A Low-Cost, Variable-Amplitude Haptic Distributed Display for Persons who are Blind and Visually Impaired. Submitted to ASSETS'10 Conference Proceedings, October 25-27, 2010, Orlando, Florida.
[5]
Brooke, J. (1986). SUS - A Quick and dirty usability scale. Digital Equipment Corp., (1986).

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  1. Comparison of methods presenting contour information to individuals who are blind or visually impaired

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      cover image ACM Conferences
      ASSETS '10: Proceedings of the 12th international ACM SIGACCESS conference on Computers and accessibility
      October 2010
      346 pages
      ISBN:9781605588810
      DOI:10.1145/1878803

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      New York, NY, United States

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      Published: 25 October 2010

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      Author Tags

      1. braille
      2. contour plots
      3. haptic mouse
      4. tactile graphics
      5. visually impaired

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