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一种快速检测圆心的抗噪声亚像素算法
引用本文:侯成刚,杨文献.一种快速检测圆心的抗噪声亚像素算法[J].光学学报,1998,18(4):81-485.
作者姓名:侯成刚  杨文献
作者单位:西安交通大学诊断与控制学研究所
摘    要:在印刷电路板的自动光学检测中,被检对象的空间对准是一个关键步骤,而传统的图像匹配技术由于其只能在像素级定位,而无法适应印刷电路板精确对准的要求。本文利用圆的几何对称性,提出一种在亚像素精度快速定位圆心的算法。

关 键 词:自动光学检查  印刷电路板  亚像素测量  圆心
收稿时间:1997/3/15

A Robust Subpixel Algorithm for the Center of Circle Detecting
Hou Chenggang,Yang Wenxian,Qu Liangsheng.A Robust Subpixel Algorithm for the Center of Circle Detecting[J].Acta Optica Sinica,1998,18(4):81-485.
Authors:Hou Chenggang  Yang Wenxian  Qu Liangsheng
Abstract:The part alignment is an important step for automated optical inspection of printed circuit board (PCB). Because conventional image recognition algorithm could only be implemented at pixel accuracy, it is not satisfied with the requirements of PCB inspection. Through the use of geometric symmetry of a circle, a robust subpixel algorithm for the center of circle detecting is presented. By the proposed method the measurement error might be less than 0.01 pixel for noise free images. In the meantime, experiments show that the algorithm has a relatively small bias in the presence of noise.
Keywords:automated optical inspection (AOI)    printed circuit board (PCB)    subpixel measurement    geometric symmetry    
本文献已被 CNKI 维普 等数据库收录!
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