What did I miss? Visualizing the Past through video traces

  • Nunes M
  • Greenberg S
  • Carpendale S
 et al. 
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Abstract

Always-on media spaces broadcast video between collaborators to provide
mutual awareness and to encourage casual interaction. This video
can be easily recorded on the fly as a video trace. Ostensibly, people
can review this video history to gain a better idea of the activities
and availability of their collaborators. Such systems are obviously
highly contentious, as they raise significant privacy concerns. However,
the ease of capturing video means that video trace systems will appear
in the near future. To push the boundaries and encourage debate about
video trace technologies within the CSCW community, we created TIMELINE,
a highly effective visualization system that combines ideas in slit
scanning as used in interactive art to allow people to easily and
rapidly explore a video history in detail. We describe its design
and implementation, and begin the debate by offering preliminary
reflections on how it can be used and misused. To encourage this
debate, TIMELINE is freely available for others to try.

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Authors

  • Michael Nunes

  • Saul Greenberg

  • Sheelagh Carpendale

  • Carl Gutwin

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