光栅投影测量物体三维轮廓的条纹中心线相对偏移量的获取  

Obtain the Relative Displacement of the Fringe-centerlines in the 3-D Profilometry Measurement Using Grating Projection

作　　者：黄燕群[1] 田爱玲[1] 

机构地区：[1]西安工业学院光电科学与工程学院,陕西西安710032

出　　处：《应用光学》2004年第6期57-60,共4页Journal of Applied Optics

摘　　要：　精确地获得光栅条纹中心线的相对偏移量,在三角形法测量物体三维轮廓技术中占有非常重要的地位。本文对光栅投影条纹图像进行预处理,提出采用重心法提取条纹中心线位置,可以获得亚像素级的精度;接着修补条纹中心线,采用模板技术跟踪条纹的走向,可求出条纹中心线相对参照平面条纹中心线的相对偏移量。It's important to obtain accurately the relative displacement of the fringe-centerlines in the 3-D profilemetry measurement technology using the triangle method. The method of barycenter, which can obtain the sub-pixel accuracy to abstract the fringe-centerlines, is presented in this paper after preprocessing the picture using grating projection.After correcting the finge-centerlines and tracking its direction with the template technology, the relative displacement of the fringe-centerlines being relative to the reference fringe-centerlines can be obtained.

关 键 词：光栅投影 重心法 条纹中心线 相对偏移量 

分 类 号：TN247[电子电信—物理电子学]