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

作者：Cui Haihua^*; Liao Wenhe; Cheng Xiaosheng; Dai Ning; Yuan Tianran

来源：Chinese Optics Letters, 2010, 8(1): 33-37.

DOI：10.3788/COL20100801.0033

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.

• 出版日期2010-1-10
• 单位南京航空航天大学