一种新的模板匹配算法及其在三维形貌测量中的应用  

A New Template Matching Algorithm and Its Application in 3-D Shape Measurement

作　　者：康新[1] 何小元[1] 冯毅[1] 

机构地区：[1]东南大学工程力学系,南京210096

出　　处：《计量学报》2002年第2期90-93,共4页Acta Metrologica Sinica

基　　金：国家自然科学基金 (10 0 72 0 17)

摘　　要：投影光栅法是进行三维形貌测量的有效手段 ,但当被测物体陡峭度较大或存在高度突变时会出现阴影问题。为此本文提出一种基于互相关函数差值的模板匹配算法。该算法可以有效地解决这一问题 ,同时该算法也可用于大尺度物体三维形貌测量的拼接技术。文中给出了算法的详细描述及实例计算 ,计算结果证明了该算法的正确性。Projecting grating is an effective method for 3 D shape measurement. But there will be a shadow the surface of the objects when an abrupt surface or steps exist. A new template matching algorithm, which based on the difference of cross correlation function, is proposed. This algorithm can not only be used to solve the shadow problem in 3 D shape measurement but also to splice the images in shape measurement of large objects. A detailed mathematical description is given. The correction of the algorithm is proved by the experiment results.

关 键 词：模板匹配算法 相关函数 三维形貌测量 投影光栅法 光学测量 阴影 

分 类 号：TG84[金属学及工艺—公差测量技术] TH741[机械工程—光学工程]