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Henning Zimmer
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2007
Big MaMUT is Watching You – Interaction-Tracking for Instrumented Environments
Michael Schmitz and Henning Zimmer
Proceedings of the 3rd IET International Conference on Intelligent Environments (IE’07), Ulm, Germany
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A major challenge in ubiquitous computing applications
in intelligent environments is the simultaneous support
of multiple users, especially when users interact with
and move freely within the environment - without being
equipped with sensors or personal devices. In such a situation,
it is difficult to provide personalized services, which
- for example - rely on user profiles or histories, if the user
does not explicitly identify her- or himself with the system,
whenever an interaction takes place. We chose a computer
vision based approach to tackle this problem and divided
the problem space into two concerns: Macro-tracking takes
care of people tracking and consistent labelling of users in
order to determine which user is in vicinity of a specific
interactive device (e.g. a touchscreen); Micro-tracking observes
the adjacency of such an interactive device to resolve
ambiguities, in case that more than one person are potential
interactors. The results of these two trackers are fused to
conclude and assign persons to interactions, detected by the
environment. We describe our implementation that can theoretically
integrate arbitrary numbers of cameras, utilizing
off-the-shelf-hardware, i.e. personal computers and cameras
- which was one of the main requirements of MaMUT,
the Macro- and Micro User Tracker.