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Proceedings Paper

A method of camera calibration based on image processing
Author(s): Jin Duan; Chuiliu Kong; Dan Zhang; Wenbo Jing
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Paper Abstract

According to the principle of optical measurement, an effective and simple method to measure the distortion of CCD camera and lens is presented in this paper. The method is based on computer active vision and digital image processing technology. The radial distortion of camera lens is considered in the method, while the camera parameters such as the pixel interval and focus of camera are calibrated. The optoelectronic theodolite is used in our experiment system. The light spot can imaging in CCD camera from the theodolite. The position of the light spot should be changed without the camera's rotation, while the optoelectronic theodolite rotates an angle. All view reference points in the image are worked out by computing the angle between actual point and the optical center where the distortion can be ignored. The error correction parameters are computed, and then the camera parameters are calibrated. The sub-pixel subdivision method is used to improve the point detection precision in our method. The experiment result shows that our method is effective, simple and practical.

Paper Details

Date Published: 5 March 2008
PDF: 8 pages
Proc. SPIE 6623, International Symposium on Photoelectronic Detection and Imaging 2007: Image Processing, 66231Q (5 March 2008); doi: 10.1117/12.791524
Show Author Affiliations
Jin Duan, Changchun Univ. of Science and Technology (China)
Chuiliu Kong, Jilin Architectural and Civil Engineering Institute (China)
Dan Zhang, Changchun Univ. of Science and Technology (China)
Wenbo Jing, Changchun Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6623:
International Symposium on Photoelectronic Detection and Imaging 2007: Image Processing
Liwei Zhou, Editor(s)

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