上海交通大学学报(自然版) ›› 2014, Vol. 48 ›› Issue (10): 1468-1472.

• 自动化技术、计算机技术 • 上一篇    下一篇

基于改进的Zernike矩亚像素边缘提取算法外螺纹非接触测量

蔡艳1,叶连祥2,孙大为1,田华2,朱俊杰1,胡志云2   

  1. (1.上海交通大学 材料科学与工程学院,上海 200240;2. 上海纳铁福传动轴有限公司,上海 201315)
  • 收稿日期:2013-10-14

Non-Contact Measurement for Outside Screw Based on a Modified  Sub-Pixel Edge Detection Algorithm of Zernike Moments

CAI Yan1,YE Lianxiang2,SUN Dawei1,TIAN Hua2,ZHU Junjie1,HU Zhiyun2   

  1. (1. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Shanghai GKN Drive Shaft Co., Ltd., Shanghai 201315, China)
  • Received:2013-10-14

摘要:

摘要:  为了进一步改善螺纹图像轮廓提取效果、提高螺纹参数的计算测量精度,在分析基于Zernike正交矩亚像素边缘检测算法的基础上,建立了边缘灰度阈值与一阶导数相结合的模型,提高了亚像素边缘点的定位精度,并在此基础上提出了计算螺纹中径和牙型角的新方法.结果表明,该方法对于克服工件表面水油污染、提高检测精度具有显著效果.
关键词:  中图分类号:  文献标志码:  A

关键词: 螺纹检测, 边缘检测, 亚像素, Zernike正交矩

Abstract:

Abstract: In order to improve the measurement accuracy of screw using the modified edge detection method and the optimized algorithm of characteristic parameters, a first-order derivative model combined with the edge gray threshold was proposed based on the subpixel edge detection algorithm and the Zernike moments. A new method was designed to calculate characteristic parameters, including pitch diameter and thread angle. The results show that the modified algorithm has improved the precision and adaptive capacity of the measurement method.

Key words: screw measurement, edge detection, sub pixel, Zernike moments

中图分类号: