Experiments in Fluids

, Volume 41, Issue 1, pp 135–143 | Cite as

Assessment of camera models for use in planar velocimetry calibration

  • Christian E. Willert


The performance of three implementations of pinhole-based camera models for use in common light-sheet imaging arrangements is investigated on the background of application to particle image velocimetry (PIV) and Doppler global velocimetry (DGV). Calibration data obtained from translated planar calibration targets was found to yield camera attitude within 0.1° on four different test cases with object distance varying as little as 2% depending on the choice of camera model. Camera calibration using data from a single image of coplanar points is considered a viable alternative to manual triangulation of camera positions but is restricted to off-normal viewing directions.


Digital imaging Camera calibration Camera model Flow imaging Image transformation Doppler global velocimetry Stereo particle image velocimetry 



The author likes to thank the PIV-Challenge steering committee, in particular Prof. M. Stanislas and Prof. J. Westerweel, for permission to use the stereo PIV image calibration data for this investigation. Further acknowledgments are given to B. Wieneke and D. Michaelis (LaVision, Germany) as well as C. Lempereur (ONERA, France) for initial information on the camera models and their pinhole positions. The suggestions made by the reviewers are greatly appreciated.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Institute of Propulsion TechnologyGerman Aerospace Center (DLR)KölnGermany

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