Precise radial un-distortion of images

Author

Mallon, John ; Whelan, Paul F.

Author_Institution

Vision Syst. Group, Dublin City Univ., Ireland

Volume

1

fYear

2004

fDate

23-26 Aug. 2004

Firstpage

18

Abstract

Radial image distortion is a frequently observed defect when using wide angle, low focal length lenses. In this paper a new method for its calibration and removal is presented. An inverse distortion model is derived that is accurate to a sub-pixel level, over a broad range of distortion levels. An iterative technique for estimating the models parameters from a single view is also detailed. Results on simulated and real images clearly indicate significantly improved performance compared to existing methods.

Keywords

approximation theory; calibration; cameras; image processing; iterative methods; lenses; parameter estimation; approximation theory; calibration; cameras; distortion removal; inverse distortion model; iterative technique; low focal length lenses; parameter estimation; radial image distortion; radial image undistortion; wide angle lenses; Calibration; Geometrical optics; Inverse problems; Lenses; Manufacturing; Mathematical model; Optical distortion; Polynomials; Predistortion; Taylor series;

fLanguage

English

Publisher

ieee

Conference_Titel

Pattern Recognition, 2004. ICPR 2004. Proceedings of the 17th International Conference on

ISSN

1051-4651

Print_ISBN

0-7695-2128-2

Type

conf

DOI

10.1109/ICPR.2004.1333995

Filename

1333995