1 July 2008 Measurement of three-dimensional mirror parameters by polarization imaging applied to catadioptric camera calibration
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J. of Electronic Imaging, 17(3), 031105 (2008). doi:10.1117/1.2958290
Abstract
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.
Olivier Morel, Ralph Seulin, David Fofi, "Measurement of three-dimensional mirror parameters by polarization imaging applied to catadioptric camera calibration," Journal of Electronic Imaging 17(3), 031105 (1 July 2008). http://dx.doi.org/10.1117/1.2958290
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KEYWORDS
Mirrors

Calibration

3D image processing

Combined lens-mirror systems

Polarization

Sensors

Cameras

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