光栅投影相位法系统模型及标定方法  

Optical system model and calibration of grating projection phase method

作　　者：安东[1] 陈李[1] 丁一飞[1] 邓连杰 王永红[1] 

机构地区：[1]合肥工业大学仪器科学与光电工程学院,安徽合肥230009

出　　处：《中国光学》2015年第2期248-254,共7页Chinese Optics

基　　金：国家自然科学基金资助项目(No.51375136);国家科技支撑计划资助项目(No.2011BAK15B07);中航工业产学研专项资助项目(No.CXY2013HFGD22)

摘　　要：本文针对传统投影光栅相位法的光学三角法模型进行了改进,采用直入射光路并配合使用一种简便易行的标定方法,只需使用相移公式求取相位差,而不会引入与系统几何位置关系有关的量,简化了求取高度矩阵的要求。实验结果表明,新系统模型精度良好,测量误差为0.107 mm。采用该模型和标定方法可以克服传统方法系统模型的局限性,最大限度减少误差源并提高抗干扰性。In this paper, the traditional optical triangulation model based on phase method is improved, and a new model and calibration method are used which is independent of geometric parameters. The new model re- quires only calculating phase difference thorough phase shift formula without adding any geometry position pa- rameters, which simplifies the requirement of resolving the altitude matrix. Parallel tests show with the new model, a measurement error of 0. 107 mm is reached, showing a good accuracy. Through the study of this pa- per. This new model calibration method can overcome the limitations of traditional method and minimize the error sources as well as improve the capability of anti-interference.

关 键 词：三维轮廓 光栅投影 相位 标定 系统模型 

分 类 号：TP394.1[自动化与计算机技术—计算机应用技术] TH691.9[自动化与计算机技术—计算机科学与技术]