| 一种基于小波变换去噪的活塞环图像检测技术 |
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| 引用本文： | 娄训志,程志辉,袁宁,曾臻,何涛.一种基于小波变换去噪的活塞环图像检测技术[J].湖北工业大学学报,2010,25(5):23-25. |
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| 作者姓名： | 娄训志 程志辉 袁宁 曾臻 何涛 |
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| 作者单位： | 1. 湖北工业大学现代制造质量工程重点实验室,湖北,武汉,430068
2. 湖北工业大学现代制造质量工程重点实验室,湖北,武汉,430068;湖北工业大学机械工程学院,湖北,武汉,430068 |
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| 基金项目： | 武汉市科技攻关项目，湖北省教育厅产学研项目 |
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| 摘 要： | 为精确测量活塞环的尺寸和识别破损缺陷,提出一种关于活塞环图像测量及破损缺陷的检测算法.该算法首先对活塞环原图像进行预处理,获取缺陷识别模型所需图像,然后通过小波变换获取清晰的活塞环图像边缘,再通过最小二乘法对活塞环图像边缘进行拟合,得到活塞环边缘曲线,建立算法模型,识别活塞环破损缺陷,得到活塞环的尺寸参数.该检测算法的缺陷识别率达99.5%,且实现活塞环的宽度亚像素测量.
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| 关 键 词： | 小波变换 活塞环 最小二乘法 尺寸测量 |
A Technology of Image Measurement and Surface Defect Recognition of Piston Ring Based on Wavelet Transform |
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| LOU Xun-zhi,CHENG Zhi-hui,YUAN Ning,ZENG Zhen,HE Tao.A Technology of Image Measurement and Surface Defect Recognition of Piston Ring Based on Wavelet Transform[J].Journal of Hubei University of Technology,2010,25(5):23-25. |
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| Authors: | LOU Xun-zhi CHENG Zhi-hui YUAN Ning ZENG Zhen HE Tao |
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| Affiliation: | 1 Hubei Univ.of Tech.Hubei Key Lab of Modern Manufacture Quality Engin.,Wuhan 430068,China;2 School of Mechanical Engin.,Hubei Univ.of Tech.,Wuhan 430068,China) |
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| Abstract: | In the paper,wavelet transform method is used to calculate accurate edge of piston ring image,then the least squares method is applied to fit a relative datum curve of the edge of the piston ring.Thus dimension parameters of piston ring can be calculated after calibration of pixel.Based on a defect recognition algorithm model and few image procedures,the algorithm can measure the width of piston rings,recognize piston ring breakages part and judge whether a piston ring is conforming or not.This application of detection algorithm can be used to actualize automatic online inspection by CCDs. |
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| Keywords: | wavelet transform least square method piston ring dimensional measurement |
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