基于快速散斑结构光三维重建的在线测量系统  

Online measurement system based on fast speckle structured light 3D reconstruction

作　　者：郭继平[1] 李名兆[1] 周迎春[1] 李阿蒙[1] 张俊杰 GUO Jiping;LI Mingzhao;ZHOU Yingchun;LI Ameng;ZHANG Junjie(Shenzhen academy of metrology and quality inspection,Shenzhen 518055,China)

机构地区：[1]深圳市计量质量检测研究院,广东深圳508055

出　　处：《计测技术》2022年第6期48-52,共5页Metrology & Measurement Technology

基　　金：广东省市场监督管理局科技项目(2020HBZ01,2020ZJ04);国家科技基础条件平台重点项目“计量科学数据项目”(APT2101-1)。

摘　　要：在流水生产线中实现工件表面三维信息的快速获取及尺寸的快速测量是当前辊压成形等制造业智能化升级过程中的迫切需求。基于散斑投影的三维重建方法仅需利用单幅物体散斑图像即可重建出物体表面的三维数据,在流水线工件快速测量中具有一定优势。本文对散斑三维重建中较为耗时的对应点搜索算法进行了优化,并在此基础上研制出适用于辊压成形制造生产线的工件快速三维测量系统。实验结果显示,该系统具有较快的三维数据重建速度,测量误差在0.035 mm范围内,能够满足辊压成形工件三维结构尺寸的快速在线测量需求。The rapid acquisition of 3D surface information and measurement of dimensions of workpieces online in the flow production lineis strongly required in the current intelligent upgrading process of manufacturing industries such as roll forming. The speckle projection based 3D reconstruction method can reconstruct the 3D data of object surface only by using a single object speckle image, which has certain advantages in the rapid measurement of workpieces online. In this paper, on the basis of optimizing the timeconsuming corresponding point search algorithm in speckle 3D reconstruction, a rapid 3D measurement system for online workpiece measurement that is suitable for the roll forming production line is developed. The experimental results show that the system has a fast 3D data reconstruction speed, and the measurement error is within 0.035 mm, which can meet the requirements of rapid online measurement of 3D structural dimensions of rolled parts.

关 键 词：在线检测 光学三维成像 散斑测量 运动物体测量 

分 类 号：TB913[一般工业技术—计量学]