Lens distortion calibration using level sets

Authors:
Moumen T. El-Melegy;Nagi H. Al-Ashwal
Affiliations:
Electrical Engineering Department, Assiut University, Assiut, Egypt;Electrical Engineering Department, Assiut University, Assiut, Egypt
Venue:
VLSM'05 Proceedings of the Third international conference on Variational, Geometric, and Level Set Methods in Computer Vision
Year:
2005

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Abstract

This paper addresses the problem of calibrating camera lens distortion, which can be significant in medium to wide-angle lenses. Our approach is based on the analysis of distorted images of straight lines. We use a PDE-based level set method to find the lens distortion parameters that straighten these lines. One advantage of this method is that it integrates the extraction of image distorted lines and the computation of distortion parameters within one energy functional which is minimized during level set evolution. Some experiments to evaluate the performance of this approach are reported.