A software for complete calibration of multicamera systems

Tomas Svoboda

doi:10.1117/12.594068

14 March 2005 A software for complete calibration of multicamera systems

Tomas Svoboda

Author Affiliations +

Proceedings Volume 5685, Image and Video Communications and Processing 2005; (2005) https://doi.org/10.1117/12.594068
Event: Electronic Imaging 2005, 2005, San Jose, California, United States

Abstract

We present a software for complete metric calibration of synchronized multicamera setups. The minimum is three cameras, but there is no upper limit. The method is fully automatic and a freely moving bright spot is the only calibration object. No camera pre-calibration is required. The software computes complete set of intrinsic camera parameters including the parameters of non-linear distortion as well as external orientation of the cameras in one common coordinate system. The software is written in Matlab, runs in non-interactive mode and produces both textual and intuitive graphical output. It is very robust and may be run with the same set of parameters in different setups. The software is free. We suggest a trick on how to adapt a very ordinary laser pointer to be a useful calibration object. Projections of such calibration object are localized with sub-pixel accuracy. Average reprojection error around 1/5 pixel was reached in well synchronized multicamera setups even for wide-angle lenses with severe non-linear distortion. We show several virtual reality and telepresence applications demonstrating the usefulness of having multicamera setups being fully calibrated.

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Tomas Svoboda "A software for complete calibration of multicamera systems", Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); https://doi.org/10.1117/12.594068

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