用井字结构光对规则部件进行三维测量

摘要

提出一种利用井字结构光对规则部件进行三维视觉测量的方法.将井字结构光投射到标定板上并采集图像,对其进行图像处理,标定井字结构光测量系统.再将井字结构光投射到规则部件上并采集图像.经图像处理提取光条中心,获得物体三维坐标信息.实验表明,该测量方法的测量范围为700～1 000 mm时,测量误差小于0.5 mm.%This paper proposes a method using structured light with an intersectingparallels shape to carry out three-dimensional (3D) vision measurement for regular components.This structured light is projected onto a calibration plate.Images are acquired and processed to calibrate the measurement system.The light is then projected on the component and images are captured and processed in order to extract the centers of the light strips.Combined with the calibration and light strip data,3D coordinates of the object are calculated precisely.Experimental results show that the measure mentrange is between 700 mm and 1 000 mm,with errors less than 0.5 mm.