| 基于中值滤波和提升小波分析的图像去噪方法研究 |
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| 引用本文： | 常亮亮,王广龙.基于中值滤波和提升小波分析的图像去噪方法研究[J].应用光学,2012,33(5):894-897. |
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| 作者姓名： | 常亮亮 王广龙 |
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| 作者单位： | 1.军械工程学院 导弹工程系,河北 石家庄 050003 |
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| 摘 要： | 针对现有算法大多对单一高斯噪声或脉冲噪声进行图像滤波的问题，在对二维图像平滑去噪的过程中，采用基于中值滤波和提升小波变换相结合的图像去噪方法。在中值滤波基础上，构造基于脉冲检测的中值滤波器，找出混合噪声中脉冲噪声并进行滤波；与此同时，对原始小波进行提升，构造提升小波，然后采用提升小波阈值去噪方法抑制高斯噪声。实验结果表明:采用本文方法，混合噪声得到有效抑制，去噪效果好。
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| 关 键 词： | 图像 混合噪声 中值滤波 提升小波 阈值去噪 |
| 收稿时间： | 2012/3/20 |
De-noising method for mixed noise based on median filter and lifting wavelet transform |
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| CHANG Liang-liang,WANG Guang-long.De-noising method for mixed noise based on median filter and lifting wavelet transform[J].Journal of Applied Optics,2012,33(5):894-897. |
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| Authors: | CHANG Liang-liang WANG Guang-long |
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| Affiliation: | 1.Department of Missile Engineering,Ordnance Engineering College,Shijiazhuang 050003,China |
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| Abstract: | Aiming at existing de-noising algorithms are often designed for removing single Gaussian noise or impulse noise, an efficient algorithm for mixed noise removal in image was proposed, including space impulse noise removal and wavelet Gaussian noise removal. Firstly, an impulse noise detection algorithm based on median filter was given to filter impulse, and at the same time a lifting wavelet was constructed by lifting original wavelet. Secondly, a threshold method based on lifting wavelet transform for image was applied to de-noising Gaussian noise. At last, simulations were conducted on the presented algorithm, and the simulation result shows that this algorithm can remove mixed Gaussian and impulse noise in image efficiently. |
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| Keywords: | image mixed noise median filter lifting wavelet threshold de-noising |
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