基于线结构光的三维测量系统关键技术研究  

Study on key technologies of three-dimensional measurement system based on line structure light

作　　者：余乐文[1,2] 张达[1] 张元生[1] 

机构地区：[1]北京矿冶研究总院,金属矿山智能开采技术北京市重点实验室,北京102628 [2]北京科技大学机械工程学院,北京100083

出　　处：《光电子．激光》2016年第2期156-161,共6页Journal of Optoelectronics·Laser

基　　金：国家高技术研究发展计划“863”计划(2011AA060405);国家自然科学基金(41301436)资助项目

摘　　要：提出了一种基于线激光、工业相机、步进电机和计算机的结构光的单目视觉三维扫描测量系统,阐述了其工作原理,建立几何数学模型,搭建了系统试验平台,并基于灰度平方加权重心法提取光条中心。实验结果表明,系统测量误差小于±0.03mm,光条中心提取精度达到亚像素级,满足工业测量应用需求。This paper puts forward a three-dimensional measurement system,which is composed by a line laser, an industrial camera, a stepper motor and computer. Describes its operating principle is described,the geometric mathematical model is established,and a test platform is built. The centerline extraction of structured light stripe based on gray square weighted centroid algorithm is proposed. The test results show that the accuracy of the centerline extraction method is sub-pixel level, and the system measuring error is less than ±0. 03 mm,which meets the needs of industrial applications.

关 键 词：线激光 激光三角法 光条中心提取 三维重建 

分 类 号：TD178[矿业工程—矿山地质测量]