Using the Directional Field for Estimating the Geometric Distortion Parameters
I. S. Gruzman, V. B. Karpushin
Pages: 3-11
Abstract
An algorithm for estimating the parameters and correcting the geometric distortions for the unknown focal length is obtained. A relationship between the directional field and the values of geometric distortion parameters is found. The relationship makes it possible to transform straight scratch images into horizontal lines. Results of experimental investigation are presented. They prove the possibility of using the directional field for solving the problem of correcting the geometric distortions of images obtained in track or ballistic investigations.