NDLI: Parameter-Free Radial Distortion Correction with Center of Distortion Estimation

Content Provider	IEEE Xplore Digital Library
Author	Hartley, R. Sing Bing Kang
Copyright Year	1979
Abstract	We propose a method of simultaneously calibrating the radial distortion function of a camera and the other internal calibration parameters. The method relies on the use of a planar (or, alternatively, nonplanar) calibration grid which is captured in several images. In this way, the determination of the radial distortion is an easy add-on to the popular calibration method proposed. The method is entirely noniterative and, hence, is extremely rapid and immune to the problem of local minima. Our method determines the radial distortion in a parameter-free way, not relying on any particular radial distortion model. This makes it applicable to a large range of cameras from narrow-angle to fish-eye lenses. The method also computes the center of radial distortion, which, we argue, is important in obtaining optimal results. Experiments show that this point may be significantly displaced from the center of the image or the principal point of the camera.
Sponsorship	IEEE Computer Society
Page Count	13
File Size	1399039
Starting Page	1309
Ending Page	1321
File Format	PDF
ISSN	01628828
Volume Number	29
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Lenses Calibration Polynomials Iterative methods Convergence Cost function Optical distortion Transmission line matrix methods Image analysis fundamental matrix. Radial distortion camera calibration
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Artificial Intelligence Computational Theory and Mathematics Computer Vision and Pattern Recognition Software

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