NDLI: The nonmetric estimation of center of distortion based on concentric circles pattern

Content Provider	IEEE Xplore Digital Library
Author	Jun-Fang Wu Gui-Xiong Liu
Copyright Year	2010
Description	Author affiliation: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, Guangdong, China (Jun-Fang Wu; Gui-Xiong Liu)
Abstract	In the distortion correction of camera lens, the methods employed to estimate the center of distortion are either complicated or requiring device to measure coordinates with high precision. By analyzing the geometric characters of circles with radial distortion, we find that the center of distortion must lies on the line which goes through every center of the distorted concentric circles. In this way, a method using concentric circles to estimate the center of distortion is proposed. Our method is entirely noniterative and nonmetric, and has no any constraint on the radius or the location of the concentric circles. As for any in-plan pattern in the world coordinate, we provide a general way to simulate its corresponding image with distortion. The simulation experiments show the error of the proposed method is less than 0.5 pixels and behaves very well in noisy images. We also point out an effective approach to reduce error.
Starting Page	6163
Ending Page	6167
File Size	847831
Page Count	5
File Format	PDF
ISBN	9781424467129
e-ISBN	9781424467129
DOI	10.1109/WCICA.2010.5554687
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Lenses Gold Calibration Robot vision systems Estimation Noise image simulation distortion correction radial distortion center of distortion nonmetric estimation
Content Type	Text
Resource Type	Article

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