计算机视觉的同心度实验平台设计  

Design of Concentricity Experiment Platform Based on Computer Vision

作　　者：陈永清[1] 蒋惠芬 范水明 陈廉清[1] 程晓民[1] CHEN Yong-qing JIANG Hui-fen FAN Shui-ming CHEN Lian-qing CHENG Xiao-min(School of Mechanical and Chemical Engineering, Ningbo University of Technology, Ningbo 315016, China Hangzhou Wren Hydraulic Equipment Manufacturing Co. Ltd, Hangzhou 311100, China Quzhou Hangyong Transformer Co. , Ltd, quzhou 324000, China)

机构地区：[1]宁波工程学院材料与化学工程学院,浙江宁波315016 [2]杭州雷恩液压设备制造有限公司,浙江杭州311100 [3]衢州杭甬变压器有限公司,浙江衢州324000

出　　处：《实验室研究与探索》2016年第9期59-62,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金资助(51275251);浙江省自然科学基金(Y14E050021);宁波工程学院2015年度自制教学仪器设备项目

摘　　要：设计了基于计算机视觉技术与Lab VIEW的零件同心度公差测量实验平台。通过二值化图像处理消除零件倒角的干扰,采用先腐蚀后作差的形态学边缘提取方法,得到单一像素的连续的内外圆边缘特征;应用最小二乘拟合圆方法得到精确的圆心坐标,由欧几里德公式计算圆心距离,通过标定转换为长度尺寸,开发测量程序系统,实现同心度公差测量的准确判断。结果表明,该实验平台检测正确率高,速度快,界面友好,适合学生实验,还能满足生产实际要求。Due to the lack of experiment equipment in universities nowadays,for example,concentricity geometry tolerance instrument being not enough to set up the experiment for measuring concentricity error,an experiment platform for measuring the concentricity error of mechanical elements has been developed based on computer vision and LabVIEW. At first,the chamfer disturbance is removed using binaryzation image processing. Next,the consecutive internal and external edge features for any individual element are obtained through morphology edge extraction approach.Least square fitting approach of circle gives the accurate center,followed by the calculation of distance between centers using Euclidean formula. Calibration transforms the distance to the dimension for developing measurement procedure system and consequently accurately judging the concentricity error measurement. Experimental results show that the proposed experiment platform has advantages of high accuracy rate,fast checking process,friendly interface,fitting for students＇ experiment,and being capable to meet the manufacturing requirement.

关 键 词：形态学 同心度 测量 计算机视觉 

分 类 号：G642.423[文化科学—高等教育学]