Calibration of radial distortion via QR factorization

In this paper, the radial distortion correcting problem with the plimbline method is revisited, which uses the fact that in pinhole camera model a straight line in the scene should be imaged as a line in image space. A new algorithm is proposed, the distortion correcting problem is reformulated as a LS problem and solved via QR factorization. Both the single line case and multi-lines case are taken into account. It is very simple and easy to implement compared with other iterative technique based methods while has reasonable radial distortion correcting result. Experiments on both simulated data and real images, which include both the indoor scene images and outdoor scene images, show its performance.