Algebraic Lens Distortion Model Estimation
Luis Alvarez, Luis Gomez, J. Rafael Sendra
Luis Alvarez, Luis Gomez, and J. Rafael Sendra, Algebraic Lens Distortion Model Estimation, Image Processing On Line, 1 (2010), pp. 1–10.

Communicated by Pascal Monasse
Demo edited by Nicolas Limare


A very important property of the usual pinhole model for camera projection is that 3D lines in the scene are projected to 2D lines. Unfortunately, wide-angle lenses (specially low-cost lenses) may introduce a strong barrel distortion, which makes the usual pinhole model fail. Lens distortion models try to correct such distortion. We propose an algebraic approach to the estimation of the lens distortion parameters based on the rectification of lines in the image. Using the proposed method, the lens distortion parameters are obtained by minimizing a 4 total-degree polynomial in several variables. We perform numerical experiments using calibration patterns and real scenes to show the performance of the proposed method.


Supplementary Materials