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专利名称: 一种实时圆形印刷图像缺陷检测方法
其他题名: Real-time circular printing image defect detecting method
作者: 刘云鹏; 夏仁波; 惠斌; 王学娟; 王永超; 王喆鑫
所属部门: 光电信息技术研究室
专利权人: 中国科学院沈阳自动化研究所
专利代理: 沈阳科苑专利商标代理有限公司 21002
专利国别: 中国
专利类型: 发明
专利状态: 公开
摘要: 本发明涉及图像处理技术领域,具体地说是一种实时圆形印刷图像缺陷检测方法,获取待检测目标的标准模板图和在线实时图,通过指数性改变搜索步长法获取圆上点坐标,根据三点定位圆方法计算标准模板图和在线实时图圆形区域的圆心和半径,将圆形区域分割成多个环形区域,并统计环形区域的灰度直方图特征,比较标准模板图和在线实时图的环形区域灰度直方图特征,完成图像缺陷检测。本发明从两个方面提高了圆形印刷图像缺陷检测的速度,为基于机器视觉的在线缺陷检测提供了一种可行的方法。
英文摘要: The invention relates to the technical field of processing of images, in particular to a real-time circular printing image defect detecting method. The method comprises the following steps: a standard template graph and an on-line real-time graph of a target to be detected, obtaining a circle point coordinate through an exponential changing and searching step-length method, calculating a circle center and semi-diameter of a circular area of each of the standard template graph and the on-line real-time graph according to a method for positioning a circle through three points, dividing each circular area into a large quantity of annular areas, counting characteristics of grey level histograms of the annular areas, and comparing the characteristics of the grey level histograms of the annular areas of the standard template graph and the on-line real-time graph to complete image defect detection. Through the adoption of the real-time circular printing image defect detecting method, the circular printing image defection speed is improved from two aspects; a practicable method is provided for on-line defect detection based on machine vision.
是否PCT专利:
申请日期: 2013-11-30
公开日期: 2015-06-03
专利申请号: CN201310639612.0
公布/公告号: CN104680509A
语种: 中文
产权排序: 1
内容类型: 专利
URI标识: http://ir.sia.cn/handle/173321/15989
Appears in Collections:光电信息技术研究室_专利

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Recommended Citation:
刘云鹏,夏仁波,惠斌,等. 一种实时圆形印刷图像缺陷检测方法. CN104680509A. 2015.
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