Flash and Peep: A Robust Method for Finding and Tracking Displays
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 are 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.