纺织学报 ›› 2006, Vol. 27 ›› Issue (12): 29-31.

• 研究探讨 • 上一篇    下一篇

机器视觉在蚕茧表面积测量中的应用

周志宇1;刘喜昂2;杨东鹤1   

  1. 1.浙江理工大学信息电子学院 浙江杭州310018;2.浙江科技学院信息与电子工程学院 浙江杭州310023
  • 收稿日期:2006-03-04 修回日期:2006-06-02 出版日期:2006-12-15 发布日期:2006-12-15

Application of machine vision in measurement of cocoon superficial area

ZHOU Zhi-yu;LIU Xi-ang;YANG Dong-he

  

  1. 1.College of Informatics and Electronics;Zhejiang Sci?-Tech University;Hangzhou;Zhejiang 310018;China;2.School of Information and Electronic Engineering;Zhejiang University of Science and Technology;Hangzhou;Zhejiang 310023;China
  • Received:2006-03-04 Revised:2006-06-02 Online:2006-12-15 Published:2006-12-15

摘要: 针对传统评茧方法的缺陷,提出了基于机器视觉技术的蚕茧表面积测量方法。利用机器视觉系统拍摄蚕茧图像,根据图像的灰度分布特征,通过Otsu法分割蚕茧图像得到二值化图像,将蚕茧看作椭圆体,由蚕茧区域的长轴和短轴值计算出蚕茧表面积。根据蚕茧的边缘图像,利用最小矩形法确定椭圆长轴和短轴的值,可以测量任意旋转角度的蚕茧表面积。实验结果表明该方法是有效的,为科学评茧提供了依据。

Abstract: Aiming at the drawbacks of the traditional way for cocoon evaluation,a measurement method for cocoon superficial area was advanced based on the technology of machine vision.It employed the system of machine vision to obtain the cocoon image,advanced segmentation using the way of Otsu for the image character of gray value distribution.Assuming that cocoon is ellipsoid,cocoon superficial area can be calculated by the long axis and short axis of cocoon region.Using the value of elliptical long axis and short axis determined by minimum enclosing rectangle based on cocoon edge image,the cocoon superficial area at discretional vertiginous angle can be measured.The experiment result indicated that the method is effectively,offering a basis for scientific evaluation of cocoon.

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