Three-stage system for camera calibration

Qing Wu; Guang-you Xu; Lei Wang

doi:10.1117/12.441552

25 September 2001 Three-stage system for camera calibration

Qing Wu, Guang-you Xu, Lei Wang

Author Affiliations +

Proceedings Volume 4553, Visualization and Optimization Techniques; (2001) https://doi.org/10.1117/12.441552
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China

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.

Citation Download Citation

Qing Wu, Guang-you Xu, and Lei Wang "Three-stage system for camera calibration", Proc. SPIE 4553, Visualization and Optimization Techniques, (25 September 2001); https://doi.org/10.1117/12.441552

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