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复合材料散斑检测中的小波降噪技术

Wavelet De～Noising of Shearography Image of NDT for Composite
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摘要 电子剪切散斑干涉检测技术非常适宜复合材料的无损检测。但散斑图像往往含有较大的噪声,如何对散斑图像进行降噪处理是一个非常重要的问题。小波变换是变分辨率的分析方法,可以有效地降低噪声,而同时又较好地保存了图像细节,本文应用小波降噪技术来对散斑图像进行降噪处理,取得了较好的效果。 Electronic shearography interfer-ence testing technology is extremely fitting for non～de-structive testing of composite. The tesing image of shearography includes much noise, so de～noising is a very important problem to resolve. Wavelet transforma-tion is multi～resolution analysis, which can reduce noise effectively and keep details of image at the same time. Wavelet de～noising technique is applied to reduce noise of shearography image and experimental result is satis-factory.
作者 崔永忠 丁利平 张坚
机构地区 北京航空工程技术研究中心 中国科学技术大学电子工程与信息科学系
出处 《航空制造技术》 2008年第19期83-86,共4页 Aeronautical Manufacturing Technology
关键词 剪切散斑 小波变换 降噪 Shearography Wavelet transfor-mation Denoising
分类号 TB33 [一般工业技术—材料科学与工程]
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参考文献5

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航空制造技术
2008年 第19期

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