Using mobile devices to enable visual multiplexing on public displays: three approaches compared

  • Authors:

  • Morin Ostkamp;Jonas Hülsermann;Christian Kray;Gernot Bauer

  • Affiliations:

  • Münster University of Applied Sciences, Münster, Germany;Münster University of Applied Sciences, Münster, Germany;University of Münster, Münster, Germany;Münster University of Applied Sciences, Münster, Germany

  • Venue:
  • Proceedings of the 12th International Conference on Mobile and Ubiquitous Multimedia
  • Year:
  • 2013

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Abstract

Public displays have become ubiquitous in many places regularly visited by large numbers of people (e.g., traffic hubs or malls). In addition to advertising they often provide information related to the location (e.g., time tables). However, individuals can have difficulties to find information relevant to them -- either due to information overload or lack of personalization. Multiplexing, as defined in information theory, can help to address this issue by increasing the number of available channels. We propose three methods for visual multiplexing, and report on a controlled lab-based comparison study. Our results indicate that visual multiplexing via mobile devices can be a feasible solution to provide personalized multimedia content on public displays, and that the three methods tested differ in terms of performance. We found that the content type shown has an impact on which method works best, and that self-reported workload differed according to content type and multiplexing method.