| 图像小波增强算法在无损检测中的应用比较 |
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| 引用本文： | 侯慧玲,王明泉. 图像小波增强算法在无损检测中的应用比较[J]. 半导体技术, 2007, 32(8): 710-713 |
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| 作者姓名： | 侯慧玲 王明泉 |
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| 作者单位： | 中北大学,仪器科学与动态测试教育部重点实验室,太原,030051;清华大学,工程物理系,北京,100084 |
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| 基金项目： | 中国博士后科学基金 , 山西省自然科学基金 , 中北大学校科研和教改项目 |
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| 摘 要： | 射线数字成像是当前射线检测、诊断技术发展的重要方向,图像降噪增强是提高无损检测图像质量的关键.将基于小波变换的图像增强技术引入到射线无损检测(NDT)图像处理中,介绍了基于小波变换的反锐化掩模法、子带增强法和自适应增强法3种增强算法,并分别用这3种算法对射线NDT图像进行增强处理.通过对实验结果数据进行对比分析得出,相比另外两种小波增强算法,自适应小波增强算法处理后的图像更贴近实际,能够更好地在抑制图像噪声的同时增强图像细节.
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| 关 键 词： | NDT图像 小波变换 图像增强 自适应增强 |
| 文章编号： | 1003-353X（2007）08-0710-04 |
| 修稿时间： | 2007-01-04 |
Comparison of Application of Wavelet-Based Image Enhancement Algorithm in Non-Destructive Testing |
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| HOU Hui-ling,WANG Ming-quan. Comparison of Application of Wavelet-Based Image Enhancement Algorithm in Non-Destructive Testing[J]. Semiconductor Technology, 2007, 32(8): 710-713 |
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| Authors: | HOU Hui-ling WANG Ming-quan |
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| Affiliation: | 1. The Ministry Education Key Lab for Instrumentation Science and Dynamic Test, North University of China, Taiyuan 030051, China ; 2. Department of Engincering Physics, Tsinghua University, Belling 100084, China |
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| Abstract: | Digital radiography is an important developmental tendency for radiographic inspection and diagnosis technique,and enhancement of image is the key to improve the quality of NDT images.Three image enhancement algorithms based on wavelet analysis to the NDT image enhancement were introduced.The unsharp masking algorithm,image sub-band enhancement algorithm and self-adapting enhancement algorithm based on wavelet analysis were discussed.Three algorithms were used to process a radiographic NDT image in order to enhance the NDT image.By comparing the results,self-adapting enhancement algorithm is better than the other two algorithms.Self-adapting enhancement algorithm can achieve an excellent balance between the enhancement of subtle image detail and the avoidance of noise amplification. |
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| Keywords: | NDT image wavelet transform image enhancement self-adapting enhancement |
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