| 利用各向异性扩散去除SAR图像中的斑点噪声 |
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| 引用本文： | 石澄贤,王洪元. 利用各向异性扩散去除SAR图像中的斑点噪声[J]. 江苏石油化工学院学报, 2004, 0(1) |
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| 作者姓名： | 石澄贤 王洪元 |
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| 作者单位： | 江苏工业学院信息科学系，江苏工业学院 江苏 常州 213016 |
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| 摘 要： | 合成孔径雷达(SAR)图像受到相干斑点噪声的干涉,严重影响合成孔径雷达图像的质量。我们利用各向异性扩散方程抑制合成孔径雷达(SAR)图像中的斑点噪声,只要选择合适的扩散方向和速度,就能较好地保留图像的边缘和细节信息。最后对合成孔径雷达图像进行去噪实验,并与小波去噪滤波方法进行比较,各向异性扩散方程具有更好的抑制噪声的效果。
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| 关 键 词： | 合成孔径雷达图像 斑点噪声 非线性扩散 |
Speckle Noise Filtering on SAR Images with Anisotropic Diffusion |
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| SHI Cheng-xian,WANG Hong-yuan. Speckle Noise Filtering on SAR Images with Anisotropic Diffusion[J]. Journal of Jiangsu Institute of Petrochemical Technology, 2004, 0(1) |
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| Authors: | SHI Cheng-xian WANG Hong-yuan |
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| Affiliation: | SHI Cheng-xian,WANG Hong-yuan Department of Information Science,Jiangsu Polytechnic University,Changzhou 213016,China, Jiangsu Polytechnic University |
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| Abstract: | Synthetic Aperture Radar (SAR) images are usually corrupted by speckle noise. A methodthat uses the anisotropic diffusion to suppress the speckle noise in Synthetic Aperture Radar images is pres-ented. The diffuse coefficients are selected so that the edge information and local detail in images can bewell preserved. And this method is compared with the wavelets filter. The numerical results of the appli-cation to SAR images demonstrate the good performance of anisotropic diffusion filtering. |
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| Keywords: | SAR image speckle noise anisotropic diffusion |
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