ONE SHOT RADIAL DISTORTION CORRECTION BY DIRECT LINEAR TRANSFORMATION

A novel method is proposed to estimate and correct image radial distortion. The solution is based upon an algebraic expansion of the homographic relationship between a planar pattern and its distorted projection into a single image, which is solved using the Direct Linear Transformation. The method requires ten point correspondences, is fully automatic and estimates both the first two parameters of the division model, and the center of distortion. Experimental results show the method to be more accurate than other recent one- and two-parameter point-based and plumb-line-based approaches.