A method of distortion correction with parallel lines

Mingli Dong; Changzheng Ma; Lianqing Zhu; Naiguang Lu

doi:10.1117/12.819720

31 December 2008 A method of distortion correction with parallel lines

Mingli Dong, Changzheng Ma, Lianqing Zhu, Naiguang Lu

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 71304G (2008) https://doi.org/10.1117/12.819720
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

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.

Citation Download Citation

Mingli Dong, Changzheng Ma, Lianqing Zhu, and Naiguang Lu "A method of distortion correction with parallel lines", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71304G (31 December 2008); https://doi.org/10.1117/12.819720

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