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Monitoring Human Activities: Flexible Calibration of a Wide Area System of Synchronized Cameras

Stéphane Drouin, Régis Poulin, Patrick Hébert and Marc Parizeau

Abstract - This paper presents an efficient procedure for calibrating a wide area system of synchronized cameras with respect to a global coordinate system. The flexibility of this procedure lies in its use of a hand-held calibration target that is automatically detected in real-time by the system, and also in its capability to provide a feedback on the working volume coverage through a sampling pyramid. In a first stage, the intrinsic parameters are computed separately for each camera, and then the relative positions of the cameras are evaluated through a bundle adjustment. The 3D reconstruction uncertainty of the camera system is assessed locally within the working volume and is verified to be acceptable for monitoring human activities.

Bibtex:

@inproceedings{Drouin72,
author    = { Stéphane Drouin and Régis Poulin and Patrick Hébert and Marc Parizeau },
title     = { Monitoring Human Activities: Flexible Calibration of a Wide Area System of Synchronized Cameras },
booktitle = { 16th International Conference on Vision Interface },
pages     = { 49-56 },
year      = { 2003 },
month     = { June 11-13 },
location  = { Halifax, Canada },
language  = { English }
}

Last modification: 2002/06/27 by sdrouin

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