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Proceedings Paper

Three-stage system for camera calibration
Author(s): Qing Wu; Guang-you Xu; Lei Wang
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Paper Abstract

This paper proposes a calibration system consisting of three components: a quasi-linear intrinsic calibrator, a linear extrinsic calibrator and a nonlinear L-M optimizer. The focal length is evaluated form vanishing points. Then the rotation matrix and the translation vector are estimated linearly. At last a Levenberg-Marquardt optimization is performed to refine the extrinsic parameters by minimizing the reprojection error. The parameterization of the rotation matrix is discussed in detail, and two parameterization methods, Euler-Angle and Axis-Angle are compared. Experimental results prove that the system can calibrate the cameras precisely.

Paper Details

Date Published: 25 September 2001
PDF: 5 pages
Proc. SPIE 4553, Visualization and Optimization Techniques, (25 September 2001); doi: 10.1117/12.441552
Show Author Affiliations
Qing Wu, Tsinghua Univ. (China)
Guang-you Xu, Tsinghua Univ. (China)
Lei Wang, Tsinghua Univ. (United States)

Published in SPIE Proceedings Vol. 4553:
Visualization and Optimization Techniques
Yair Censor; Mingyue Ding, Editor(s)

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