Chinese Optics Letters, 2010, 8 (1): 33, Published Online: Mar. 1, 2010
A three-step system calibration procedure with error compensation for 3D shape measurement Download: 1720次
三维视觉测量 结构光系统 系统标定 误差补偿 120.0120 Instrumentation, measurement, and metrology 100.0100 Image processing 150.0150 Machine vision
Abstract
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.
Haihua Cui, Wenhe Liao, Xiaosheng Cheng, Ning Dai, Tianran Yuan. A three-step system calibration procedure with error compensation for 3D shape measurement[J]. Chinese Optics Letters, 2010, 8(1): 33.