A flexible and rapid micro-adjustment algorithm for structured light 3D measurement system with camera-projector

作者：Cui Haihua; Liao Wenhe; Dai Ning; Cheng Xiaosheng

来源：Optik, 2012, 123(2): 109-116.

DOI：10.1016/j.ijleo.2011.03.008

• 3D measurement
• Structured light system
• Rapid adjustment
• Error compensation
• System model

The structured light 3D measurement system with camera-projector has been widely studied and applied because of its characteristics of simple structure. In practice, we find that slight shock, vibration, or long-term applying may slightly reduce its level of measurement accuracy: thus, correcting the system parameters is occasionally necessary. However, most calibration algorithms are complicated and time-consuming procedures, not suitable for flexible and rapid precise calibration operation. To address this limitation, a flexible and rapid system parameter micro-optimization algorithm based on an implicit projection model is proposed. With a flexible measurement of an arbitrary 3D gauge, the system parameters are optimized rapidly by Levenberg-Marquardt (L-M) algorithm; thus, the high degree of accuracy of the system can be restored. Experiments were performed to validate the availability and reliability of the adjustment method. The algorithm can meet the convenient and real-time accuracy maintenance in practical application for structured light 3D measurement system.

• 出版日期2012
• 单位南京大学