Camera self-calibration in scheimpflug condition for air flow investigation

Authors:
Hanene Louhichi;Thierry Fournel;Jean Marc Lavest;Habib Ben Aissia
Affiliations:
Laboratoire Traitement du Signal et Instrumentation, UMR 5516 CNRS, Université Jean Monnet, Saint Etienne, France;Laboratoire Traitement du Signal et Instrumentation, UMR 5516 CNRS, Université Jean Monnet, Saint Etienne, France;Laboratoire de Sciences des Materiaux pour l'Electronique et d'Automatique, UMR 6602 CNRS, Université Blaise Pascal, France;Unité de Métrologie en Mécanique des Fluides et Thermiques, UR 11-17, Université de Monastir, Iben Eljazzar, Monastir, Tunisie
Venue:
ISVC'06 Proceedings of the Second international conference on Advances in Visual Computing - Volume Part II
Year:
2006

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Abstract

Camera calibration is a necessary preliminary step to ensure high quality measurement in a section of a flow. The bundle adjustment technique is based on redundancy resulting from multi-viewing the calibration target. In this paper we proposed a well-adapted protocol for self-calibrating a Scheimpflug model. Such a protocol allows calibration by hand positioning a laser printed target. Experimental results indicate that with only 5 views we can accurately calibrate a Scheimpflug camera in Stereoscopic Particle Image Velocimetry condition.