| 一种用于AOI的PCB拼接算法 |
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| 引用本文： | 李庆,张丰,李芬,彭立艮.一种用于AOI的PCB拼接算法[J].华中科技大学学报(自然科学版),2011(2):90-93. |
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| 作者姓名： | 李庆 张丰 李芬 彭立艮 |
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| 作者单位： | 武汉理工大学信息工程学院;深圳先进技术研究院集成所半导体设备研究室;武汉大学电子信息学院; |
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| 基金项目： | 国家自然科学基金资助项目(608060500) |
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| 摘 要： | 针对自动光学检测技术(AOI)在PCB板检测中存在的图像拼接严重错位、系统响应速度慢、拼接精度差等问题,对PCB图像拼接算法进行了改进研究.首先,提出整行缩小以及以行图像为配准图像的方式进行图像拼接;其次,在传统PCB图像拼接算法上引入surf配准,采用图像金字塔尺度空间的方法,确定拼接图像间的对应特征点,选取最近邻次近邻的配准方式进行特征匹配.实验结果表明:提出的拼接算法,生成图像的数据量相对较少、速度较快,误差不会累积传递,消除了错位偏差,并解决了因光照不均而造成拼接缝隙的问题,大大提高了拼接的精度和速度,为AOI系统后续准确识别PCB板缺陷打下了良好的基础.
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| 关 键 词： | 图像处理 图像配准 自动光学检测 图像拼接 配准 |
A PCB image mosaic algorithm for AOI system |
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| Li Qing Zhang Feng Li Fen Peng Ligen.A PCB image mosaic algorithm for AOI system[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(2):90-93. |
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| Authors: | Li Qing Zhang Feng Li Fen Peng Ligen |
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| Institution: | Li Qing1 Zhang Feng2 Li Fen1 Peng Ligen3(1 School of Information Engineering,Wuhan University of Technology,Wuhan 430070,China,2 Semiconductor Equipment Laboratory,Shenzhen Institute of Advanced Integration Technology,Shenzhen 518055,Guangdong China,3 School of Electronic Information Engineering,Wuhan University,China) |
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| Abstract: | There are common problems including serious dislocation in image mosaic,low response speed of system,and low mosaic precision in the inspection of PCB(prined circuit board) by AOI(automated optical inspection) technology.An improved PCB image mosaic algorithm was proposed.First a method of decreasing every entire line image was put forward which used the line image as the reference of registration.Then the advanced surf registration algorithm was brought forward to optimize the traditional image mosaic algo... |
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| Keywords: | image processing image registration automatic optic inspection image mosaic surf registration |
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