基于形态学边缘检测和小波阈值的摩擦副红外图像去噪

中国机械工程 ›› 2013, Vol. 24 ›› Issue (09): 1229-1232.

基于形态学边缘检测和小波阈值的摩擦副红外图像去噪

俞建卫1,2;罗振山1;尹延国1,2;尤涛1

1.合肥工业大学，合肥，230009
2.安徽省粉末冶金工程技术研究中心，合肥，230009

出版日期:2013-05-10 发布日期:2013-05-16
基金资助:
国家自然科学基金资助项目(51075114,50975072)
National Natural Science Foundation of China（No. 51075114,50975072）

Study on Infrared Image Denoising of Friction Pairs Based on Morphological Edge Detection and Wavelet Threshold

Yu Jianwei1,2;Luo Zhenshan1;Yin Yanguo1,2;You Tao1

1.Hefei University of Technology，Hefei，230009
2.Anhui Research Center for Powder Metallurgy Engineering & Technology,Hefei,230009

Online:2013-05-10 Published:2013-05-16
Supported by:
National Natural Science Foundation of China（No. 51075114,50975072）

摘要/Abstract

摘要：

针对红外图像通过普通小波阈值去噪不能较好地保留边缘信息的问题，提出了一种数学形态学边缘检测和小波阈值去噪相结合的方法，对摩擦副表面红外图像进行去噪，达到获得较为准确的温度场的目的。红外图像经过小波变换，在高频子带中做数学形态学边缘检测，确定边缘信息的位置，再进行阈值去噪处理。试验结果表明，相比普通小波阈值去噪方法，该方法不仅较好地保留了红外图像的边缘信息，去噪效果明显，而且改善了均方误差和峰值信噪比。该方法意在提高红外图像测温的准确性，为测量和分析摩擦温度场提供更好的技术支持，具有较高的工程应用价值。

关键词: 边缘检测, 小波阈值去噪, 摩擦副表面, 红外图像

Abstract:

The common method of wavelet threshold denoising for infrared image processing usually distorts the edge in image. A new method, combining the mathematical morphology edge detection and the wavelet threshold denoising, was presented and applied in denoising the infrared image of friction surface. Infrared image was processed through three steps: wavelet transformation, mathematical morphology edge detection in the high-frequency sub-band for determination the location of edge and threshold denoising. Experimental results show that this method can preserve more edge information, improve mean square deviation and peak signal-to-noise ratio. The intention of this approach is to improve the accuracy of the temperature measurement of the infrared images, thus it provides better technical support for measuring and analyzing friction temperature field with the high engineering values.

Key words: edge detection, wavelet threshold denoising, friction surface, infrared image

中图分类号:

俞建卫1, 2, 罗振山1, 尹延国1, 2, 尤涛1. 基于形态学边缘检测和小波阈值的摩擦副红外图像去噪[J]. 中国机械工程, 2013, 24(09): 1229-1232.

SHU Jian-Wei-1, 2, LUO Zhen-Shan-1, YIN Yan-Guo-1, 2, YOU Chao-1. Study on Infrared Image Denoising of Friction Pairs Based on Morphological Edge Detection and Wavelet Threshold[J]. China Mechanical Engineering, 2013, 24(09): 1229-1232.

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