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Camera Calibration from Images of Spheres
March 2007 (vol. 29 no. 3)
pp. 499-502
This paper introduces a novel approach for solving the problem of camera calibration from spheres. By exploiting the relationship between the dual images of spheres and the dual image of the absolute conic (IAC), it is shown that the common pole and polar with regard to the conic images of two spheres are also the pole and polar with regard to the IAC. This provides two constraints for estimating the IAC and, hence, allows a camera to be calibrated from an image of at least three spheres. Experimental results show the feasibility of the proposed approach.
Index Terms:
Calibration, sphere, silhouette, surface of revolution (SOR).
Hui Zhang, Kwan-Yee K. Wong, Guoqiang Zhang, "Camera Calibration from Images of Spheres," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 29, no. 3, pp. 499-502, March 2007, doi:10.1109/TPAMI.2007.45
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