基于空间矩亚像素技术的车身钣金件小孔的检测  

Inspection of Hole on Sheet Metal Parts of Autobody Based on Spatial Moment

作　　者：崔岸[1] 刘业峰[2] 刘锡国[2] 徐鸣一[2] 

机构地区：[1]吉林大学汽车学院车身系 [2]吉林大学

出　　处：《工具技术》2007年第2期91-94,共4页Tool Engineering

基　　金：教育部现代车身技术湖南大学重点实验室开放基金项目资助(项目编号:KLVBDM2005003)

摘　　要：将非接触测量及图像处理技术用于检测车身钣金件上一些位置和形状精度要求很高的小孔。采用空间矩亚像素算法对孔边缘进行精确定位,测量了孔的直径、中心位置及圆度;分析了影响测量精度的相关因素。实验结果表明,该方法具有很高的稳定性和精确度,并适用于在线检测。For inspecting holes on the sheet metal parts of autobody, a method based on non-contacted and digital image processing techniques is presented. Log algorithm is used first to calculate the edge image at pixel accuracy, and then spatial moment algorithm is applied to reach at subpixel accuracy. The method of calculating other parameters such as diameter, location and roundness is presented and some impacting factors on measuring accuracy are analyzed. Results of experiment show that the method has the advantages of more accuracy and stability and be suitable for on-line inspection.

关 键 词：空间矩 亚像素 车身板金件 小孔 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]