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Proceedings Paper

A method of distortion correction with parallel lines
Author(s): Mingli Dong; Changzheng Ma; Lianqing Zhu; Naiguang Lu
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Paper Abstract

A method of distortion correction based on parallel lines is presented, not only for radial distortion coefficient but also for tangential distortion coefficients. Firstly, an approximate line passing through the center is approached by anamorphic curves. The coefficient of distortion is combined with the vision process to correct an anamorphic image for the final calibration of the liner model. Secondly, the point with only tangential distortion is gained by the actual point minus radial distortion. The distances from the point with tangential distortion and the ideal point to the principal point are equivalent. The Least-squares method is used to fit lines in theory, and the coefficients of tangential distortion are gotten.

Paper Details

Date Published: 31 December 2008
PDF: 6 pages
Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71304G (31 December 2008); doi: 10.1117/12.819720
Show Author Affiliations
Mingli Dong, Beijing Institute of Technology (China)
Beijing Institute of Machinery (China)
Changzheng Ma, Beijing Institute of Machinery (China)
Lianqing Zhu, Beijing Institute of Machinery (China)
Naiguang Lu, Beijing Institute of Machinery (China)


Published in SPIE Proceedings Vol. 7130:
Fourth International Symposium on Precision Mechanical Measurements
Yetai Fei; Kuang-Chao Fan; Rongsheng Lu, Editor(s)

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