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Usability of Accessible Bar Charts

  • Cagatay Goncu
  • Kim Marriott
  • John Hurst
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6170)

Abstract

Bar charts are one of the most commonly used diagram types. Tactile diagrams are a widely used technique for presenting graphics to people who are blind. We explored how to present bar charts using a tactile presentation. Our user study used blind participants and evaluated both user preferences and performance. We found that providing grid lines and values in a tactile diagram was preferred to a direct transcription. In addition, presenting the data as a tactile table was preferred to a tactile chart. Both of these approaches reduced the error rate, and presentation as a table had performance benefits. We also investigated the comparative usability of: a tactile presentation, an audio description of the bar chart, and a tactile/audio presentation in which a tactile diagram is overlaid on a touch-sensitive device which provides audio feedback on demand. We found that tactile was the most preferred while audio was the least.

Keywords

User Study Grid Line Blind People Presentation Medium Audio Feedback 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Cagatay Goncu
    • 1
  • Kim Marriott
    • 1
  • John Hurst
    • 1
  1. 1.Clayton School of ITMonash UniversityAustralia

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