Special Section on Quality Control by Artificial Vision

Measurement of three-dimensional mirror parameters by polarization imaging applied to catadioptric camera calibration

[+] Author Affiliations
Olivier Morel, Ralph Seulin, David Fofi

Institut Universitaire de Technologie Le Creusot, Laboratory of Electronics, Computer Science and Image, Unités Mixtes de Recherche Centre National de la Recherche Scientifique 5158, Le Creusot, Burgundy 71200, France

J. Electron. Imaging. 17(3), 031105 (August 18, 2008). doi:10.1117/1.2958290
History: Received June 22, 2007; Revised February 08, 2008; Accepted February 08, 2008; Published August 18, 2008
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We present a new efficient method for calibration of catadioptric sensors. The method is based on an accurate measurement of the three-dimensional parameters of the mirror through polarization imaging. While inserting a rotating polarizer between the camera and the mirror, the system is automatically calibrated without any calibration patterns. Moreover, this method permits most of the constraints related to the calibration of catadioptric systems to be relaxed. We show that, contrary to our system, the traditional methods of calibration are very sensitive to misalignment of the camera axis and the symmetry axis of the mirror. From the measurement of three-dimensional parameters, we apply the generic calibration concept to calibrate the catadioptric sensor. We also show the influence of the disturbed measurement of the parameters on the reconstruction of a synthetic scene. Finally, experiments prove the validity of the method with some preliminary results on three-dimensional reconstruction.

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© 2008 SPIE and IS&T

Citation

Olivier Morel ; Ralph Seulin and David Fofi
"Measurement of three-dimensional mirror parameters by polarization imaging applied to catadioptric camera calibration", J. Electron. Imaging. 17(3), 031105 (August 18, 2008). ; http://dx.doi.org/10.1117/1.2958290


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