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Michael Schneider, Andreas Butz, Antonio Krüger
Flash and Peep: A Robust Method for Finding and Tracking Displays
In: Proceedings of the IEE International Workshop on Intelligent Environments (IE 2005), ISBN 0-86341-519-9, University of Essex, Colchester, UK, 2005
  We present a two-step method for the localization of displays using cameras and visual markers on screens. Displays can attract attention by flashing in a characteristic pattern and color. Once they’re found by a camera, their exact position can be calculated robustly from a set of markers they show. To make the method numerically stable, a certain degree of redundancy must exist in the environment. We describe how this method was implemented in our experimental instrumented environment and show a simple example of the system in operation.
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