条纹投射轮廓术中非正弦误差校正方法  

Nonlinear Error Correction Method in Fringe Projection Profilometry

作　　者：朱建礼 ZHU Jianli

机构地区：[1]上海大学机电工程与自动化学院

出　　处：《计量与测试技术》2025年第1期126-130,共5页Metrology & Measurement Technique

摘　　要：在条纹投射轮廓术中,尤其是采用非均匀相移时,非正弦误差难以通过常规方法有效消除。因此,本文提出从测量相位图中分离的方法。首先,采用最小二乘法,计算捕获的条纹模式的粗相位图,并进行滤波,得到平滑的相位分布;然后,估计与条纹谐波相关的系数,并通过迭代进行补偿。结果表明:该方法具有有效性和可行性。In fringe projection profilometry,especially when non-uniform phase shift is adopted,non-sinusoidal errors are difficult to be effectively eliminated by conventional methods.Therefore,a method of separation from the measurement phase diagram is proposed in this paper.Firstly,the coarse phase diagram of the captured fringe pattern is calculated by the least square method,and then the smooth phase distribution is obtained by filtering.Then,the coefficients associated with fringe harmonics are estimated and compensated by iteration.The results show that the method is effective and feasible.

关 键 词：条纹投影轮廓术 非正弦 任意相移 误差校正 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O439[自动化与计算机技术—计算机科学与技术]