摘要
为了解决2D视觉对工件表面平坦度测量力不足,而现有的3D测量设备价格昂贵且缺乏定制灵活度的问题,提出了基于线激光与三维模板匹配的3D平坦度测量系统。首先,根据线激光、3D相机、拍摄材料以及运动平台,设计基于激光三角测量法的3D图像采集模块。然后利用3D图像与2D图像差异,根据第三维数据的特征,将三维点云数据分解为一系列二维图形,逐层匹配后再集成为3D模板,形成3D模板匹配模块。最后,根据匹配结果区域的第三维数据差,计算出材料目标区域的平坦度。实验结果显示：与当前2D视觉测量技术相比,所提方案对3D工件表面的定位与平坦度测量具有更高的精度。
In order to solve the problem that 2D vision is lack of flatness measurement, and the integrated 3D measurement system is expensive and lack of customized flexibility, a 3D flatness measurement system based on line laser and 3D template matching is proposed. First, according to the line laser, 3D camera, shooting material and motion platform, the 3D image acquisition module based on laser triangulation is designed. Then the difference between 3D images and 2D images is analyzed, according to the characteristics of the third dimension data, the 3D point cloud data is decomposed into a series of two-dimensional graphics, and then the 3D template matching module is designed after the layer matching is integrated into the 3D template. Finally, the flatness of the material target region is calculated according to the difference of the third dimension data. The experimental results show that compared with the traditional technology, the algorithm system has higher accuracy and measurement ability for the 3D object positioning and flatness measurement.
出处
《控制工程》
CSCD
北大核心
2018年第2期341-345,共5页
Control Engineering of China
基金
安徽省教育厅自然科学研究重点项目(KJ2016A753)
国家高技术研究发展计划资助项目(2014AA110501)
关键词
工件表面
线激光
三角测量
模板匹配
3D视觉
平坦度测量
Workpiece surface
line laser
triangulation measurement
template matching
3D vision
flamess measurement
作者简介
安宗权（1976-），男，安徽铜陵人，研究生，副教授，主要从事先进制造技术等方面的教学科研工作；;王匀（1975-），男，江苏无锡人，博士，教授，主要从事质量检测、材料加工技术和微塑性加工研究等方面的教学与科研工作。
