Printed Circuit Board Image Mosaics Based on Wavelet Transformation

LUO Bing; ZHANG Yun; ZENG Xin-yi; JI Xiu-xia

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Printed Circuit Board Image Mosaics Based on Wavelet Transformation

更新时间：2026-05-27

- Printed Circuit Board Image Mosaics Based on Wavelet Transformation
- Vol. 24, Issue 3, Pages: 73-75(2007)
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- Online First：10 August 2007，
  
  Published：2007
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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(3): 73-75.

LUO Bing, ZHANG Yun, ZENG Xin-yi, et al. Printed Circuit Board Image Mosaics Based on Wavelet Transformation[J]. 2007, 24(3): 73-75.
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(3): 73-75. DOI：

LUO Bing, ZHANG Yun, ZENG Xin-yi, et al. Printed Circuit Board Image Mosaics Based on Wavelet Transformation[J]. 2007, 24(3): 73-75. DOI：

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

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...

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references

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[C]//Proc of IEEE 28th Annual Conference of the Industrial E-lectronics Society,2002,3:2219-2224.

罗兵,章云.SMT质量缺陷和AOI检测方法[J].电子质量,2006,238(6):30-32.

HWA-JUNG K,TAE-HYOUNG P.A clustering algorithmfor path planning of SMT inspection machines[C]∥Proc.of the Annual Conf.of the Society of Instrument and ControlEngineers,2003,3:2869-2874.

XU D,PAUL B,SHI J Y.Image mosaics based on complexwavelet decomposition[J].Journal of Software,1998,9(9):656-661.

黄铜城,胡运发.基于多分辨率特征的图像镶嵌技术[J].计算机工程,2006,32(7):23-25.

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,2005,31(15):70-72.

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