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

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。

Abstract: It's important to accurately the relative displacament of the fringer-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 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.