基于小波变换的PCB图像拼接

广东工业大学学报 ›› 2007, Vol. 24 ›› Issue (03): 73-75.

基于小波变换的PCB图像拼接

广东工业大学自动化学院；广东工业大学自动化学院广东广州510090；广东广州510090；

出版日期:2007-08-10 发布日期:2007-08-10

Printed Circuit Board Image Mosaics Based on Wavelet Transformation

(Faculty of Automation,Guangdong University of Technology,Guangzhou 510090,China)

Online:2007-08-10 Published:2007-08-10

摘要/Abstract

摘要： 在印刷电路板(PCB)的机器视觉检测中需要通过图像拼接来得到整个PCB的图像,传统的图像配准拼接技术由于光照干扰效果不好.用图像的小波分解高频系数去掉反映光照渐变的低能量系数后,可以较好地避免光照不均匀的干扰,分别利用有效垂直高频系数的垂直投影和水平高频系数的水平投影可以快速水平配准和垂直配准,低频部分作拼接的灰度渐变平滑处理. 更多还原

关键词: 图像拼接；小波变换；图像配准；机器视觉；

Abstract: In PCB SMT assembly automatic machine vision inspection,image mosaic is necessary for getting an entire PCB image.Because of inhomogeneous illumination in this engineering image capture,conventional mosaic methods didn’t word well.High frequency coefficients of wavelet decomposition can reflect the contour of the image and that of illumination variety is relative small,so image mosaic based on wavelet decomposition can be robust for PCBA inspection.Using projection of wavelet decomposition coeff...

Key words: image mosaic； wavelet transformation； image registration； machine vision；

罗兵；章云；曾歆懿；季秀霞； . 基于小波变换的PCB图像拼接[J]. 广东工业大学学报, 2007, 24(03): 73-75.

LUO Bing,ZHANG Yun,ZENG Xin-yi,JI Xiu-xia. Printed Circuit Board Image Mosaics Based on Wavelet Transformation[J]. Journal of Guangdong University of Technology, 2007, 24(03): 73-75.

参考文献

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[2] 侯舒维,郭宝龙. 一种图像自动拼接的快速算法[J]. 计算机工程. 2005(15)

[3] 罗兵,曾歆懿,季秀霞. SMT产品缺陷及相应的AOI检测方法[J]. 电子质量. 2006(06)

[4] 徐丹,鲍歌,石教英. 基于复值小波分解的图象拼合[J]. 软件学报. 1998(09)

[1] GALLEGOS-HERNANDEZ A,RUIZ-SANCHEZ F J,VIL-LALOBOS-CANO J R.2D automated visual inspection sys-tem for the remote quality control of SMD assembly. 蜳roc of IEEE 28th Annual Conference of the Industrial E-lectronics Society . 2002

[2] HWA-JUNG K,TAE-HYOUNG P.A clustering algorithmfor path planning of SMT inspection machines. Proc of the Annual Conf.of the Society of Instrument and ControlEngineers . 2003

[3] XU Dan 1\ BAO Ge 2\ SHI Jiao ying 1 1(State Key Laboratory of CAD & CG\ Zhejiang University\ Hangzhou\ 310027) 2(Department of Computing\ The Polytechnic University of Hong Kong\ Hong Kong).Image Mosaics Based on Complex Wavelet Decomposition. JOURNAL OF SOFTWARE . 1998

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