重庆理工大学学报（自然科学版）2017，Vol.31Issue(1)：93-99,7.DOI:10.3969/j.issn.1674-8425(z).2017.01.015
基于PCA和分段RHT的PCB板圆Mark点定位
Positioning of Circular Mark in PCB Based on PCA and Segment RHT
摘要
Abstract
Positioning of circle mark is an important part of the automatic optic inspection (AOI for short).A circle detection method based on principal component analysis (PCA for short ) and segment randomized hough transform (RHT for short)is proposed,aiming at circular mark positioning of PCB in multi-scene.The method is based on Canny edge detection,use PCA to remove irrelevant line and curve,and combine with RHT to receive parameters of the Quasi-circular;and then get the position circular by least square fitting.The experimental results show that this method can extract the single hole or porous mark circle well and give accurate positioning parameters.Besides,it can provide guarantee for further defect detection.关键词
定位/自动光学检测/主成分分析/随机霍夫变换/最小二乘拟合Key words
positioning/automatic optic inspection/principal component analysis/randomized Hough transform/least square fitting分类
信息技术与安全科学引用本文复制引用
刘政,熊昊,肖森林,王越..基于PCA和分段RHT的PCB板圆Mark点定位[J].重庆理工大学学报（自然科学版）,2017,31(1):93-99,7.基金项目
国家自然科学基金资助项目(61502064) （61502064）
