%0 Journal Article
%T Rapid Visual Detection for Hollow Cylinder Top Surface Defects<br>空心圆柱端面缺陷的快速视觉检测
%A SONG Le
%A LIN Yu-chi
%A HE Dong
%A LIU Qi-hai
%A ZHAO Mei-rong
%A <br>宋乐
%A 林玉池
%A 何冬
%A 刘启海
%A 赵美蓉
%J 中国图象图形学报
%D 2009
%I 
%X A new method for undersized part surface defect detection is proposed. In order to meet workpieces with different sizes and different surface geometry characteristics, we use the rectangular LED array with variable incidence angle as the light source. The original facing image is captured with CCD and treated with a series of pre-processing procedures. Then optimized Hough transform is adopted to fit circle rapidly for end face detection. Radial offsets from pixel point to fitted standard circle are calculated to acquire defected pixel points and then realize the quantitative evaluation for the end face defect. Experimental results show that this method can realize on-line detection of undersized part surface quality promptly and accurately as to improve the efficiency of existing production lines.
%K visual detection
%K hollow cylinder
%K Hough transform
%K top-surface defect
%K undersized<br>视觉检测
%K 空心圆柱
%K Hough变换
%K 端面缺陷
%K 小尺寸
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=86AF1ED4439E1F9932D32DB273EE6CE1&yid=DE12191FBD62783C&vid=F3583C8E78166B9E&iid=F3090AE9B60B7ED1&sid=49507C87FC1E9CB1&eid=EED5C98ED814B809&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=6