| 基于小波变换的PCB图像拼接 |
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| 引用本文： | 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): 73-75,99 |
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| 作者姓名： | 罗兵 章云 曾歆懿 季秀霞 |
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| 作者单位： | 广东工业大学,自动化学院,广东,广州,510090;广东工业大学,自动化学院,广东,广州,510090;广东工业大学,自动化学院,广东,广州,510090;广东工业大学,自动化学院,广东,广州,510090 |
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| 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.
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| 关 键 词： | 图像拼接 小波变换 图像配准 机器视觉 |
| 文章编号： | 1007-7162（2007）03-0073-03 |
| 收稿时间： | 2006-12-11 |
| 修稿时间： | 2006-12-11 |
Printed Circuit Board Image Mosaics Based on Wavelet Transformation |
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| 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(3): 73-75,99 |
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| Authors: | LUO Bing ZHANG Yun ZENG Xin-yi JI Xiu-xia |
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| Affiliation: | Faculty of Automation, Guangdong University of Technology, Guangzhou 510090, China |
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| 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 coefficients to replace mutual correlation can simplify the calculation from 2D to 1D.Experimental results show this approach is effective,robust and quick. |
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| Keywords: | image mosaic wavelet transformation image registration machine vision |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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