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Proceedings Paper

A new method for linear camera calibration and nonlinear distortion correction
Author(s): Jun Wang; Naiguang Lu; Mingli Dong; Chunhui Niu
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Paper Abstract

Recent progress of images taken by non-metric digital cameras encourages amateurs to utilize it for 3D measurements, but also introduces the difficulties of calibration. The ideal camera projection model is based on the pinhole linear model which proceeds on the assumption that the object point, the perspective center of the lens and the ideal image point all lie on a straight line. However, real camera lenses introduce nonlinear distortions that affect the accuracy of the transformation unless proper corrections are applied. In this paper, we present a new camera calibration method adopting a linear projection model and a nonlinear lens distortion model. Experiments are conducted on real data to compare the proposed method with the non-linear bundle adjustment and DLT (Direct Linear Translation), which shows that the accuracy obtained with the proposed method is close to the former, and much higher than the latter.

Paper Details

Date Published: 13 October 2006
PDF: 6 pages
Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62802O (13 October 2006); doi: 10.1117/12.716289
Show Author Affiliations
Jun Wang, Beijing Univ. of Posts and Telecommunications (China)
Beijing Institute of Machinery (China)
Naiguang Lu, Beijing Institute of Machinery (China)
Beijing Univ. of Posts and Telecommunications (China)
Mingli Dong, Beijing Institute of Machinery (China)
Beijing Institute of Technology (China)
Chunhui Niu, Beijing Institute of Machinery (China)

Published in SPIE Proceedings Vol. 6280:
Third International Symposium on Precision Mechanical Measurements
Kuang-Chao Fan; Wei Gao; Xiaofen Yu; Wenhao Huang; Penghao Hu, Editor(s)

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