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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 8, Iss. 1 — Jan. 1, 2010
  • pp: 33–37

A three-step system calibration procedure with error compensation for 3D shape measurement

Haihua Cui, Wenhe Liao, Xiaosheng Cheng, Ning Dai, and Tianran Yuan  »View Author Affiliations

Chinese Optics Letters, Vol. 8, Issue 1, pp. 33-37 (2010)

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System calibration, which usually involves complicated and time-consuming procedures, is crucial for any three-dimensional (3D) shape measurement system based on vision. A novel improved method is proposed for accurate calibration of such a measurement system. The system accuracy is improved with considering the nonlinear measurement error created by the difference between the system model and real measurement environment. We use Levenberg-Marquardt optimization algorithm to compensate the error and get a good result. The improved method has a 50% improvement of re-projection accuracy compared with our previous method. The measurement accuracy is maintained well within 1.5% of the overall measurement depth range.

© 2010 Chinese Optics Letters

OCIS Codes
(100.0100) Image processing : Image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(150.0150) Machine vision : Machine vision

Haihua Cui, Wenhe Liao, Xiaosheng Cheng, Ning Dai, and Tianran Yuan, "A three-step system calibration procedure with error compensation for 3D shape measurement," Chin. Opt. Lett. 8, 33-37 (2010)

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