Unbiased Estimator for Distorted Conics in Camera Calibration

arXiv:2403.04583v1 Announce Type: new
Abstract: In the literature, points and conics have been major features for camera geometric calibration. Although conics are more informative features than points, the loss of the conic property under distortion has critically limited the utility of conic features in camera calibration. Many existing approaches addressed conic-based calibration by ignoring distortion or introducing 3D spherical targets to circumvent this limitation. In this paper, we present a novel formulation for conic-based calibration using moments. Our derivation is …

abstract arxiv cs.cv features literature loss major property type unbiased utility