| 一种保边缘的图像去噪方法 |
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| 引用本文： | 张显全,阳建中,付念,王现会,代旋.一种保边缘的图像去噪方法[J].计算机工程,2012,38(2):224-225. |
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| 作者姓名： | 张显全 阳建中 付念 王现会 代旋 |
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| 作者单位： | 1. 广西师范大学计算机科学系,广西桂林,541004
2. 广西师范大学计算机科学系,广西桂林541004;钦州学院数计学院,广西钦州535000 |
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| 基金项目： | 国家自然科学基金资助项目（60963008）; 广西自然科学基金资助项目（0832104）; 广西科学研究与技术开发计划基金资助项目（10123005-8）; 重庆市教委研究基金资助项目（KJ081309）; 广西教育厅基金资助项目（200911MS55）; 广西研究生教育创新计划基金资助项目（2010106020812M62） |
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| 摘 要： | 提出一种保边缘的去噪方法。该方法利用4个方向核卷积检测图像中的噪声点和非噪声点，对非噪声点不进行处理。在噪声点的3×3邻域中选择距离最小的非噪声点，若无非噪声点则邻域扩大为5×5，若有非噪声点则用这些点的中值替换噪声点，否则用邻域中距离最远像素点的均值替换噪声点。实验结果表明，该方法不仅能有效去除图像的噪声，且能较好地保护图像边缘。
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| 关 键 词： | 卷积 噪声点 非噪声点 邻域 保边缘 |
| 收稿时间： | 2011-05-23 |
Edge-preserving Image Denoising Method |
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| ZHANG Xian-quan
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YANG Jian-zhong
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FU Nian
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WANG Xian-hui
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DAI Xuan.Edge-preserving Image Denoising Method[J].Computer Engineering,2012,38(2):224-225. |
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| Authors: | ZHANG Xian-quan YANG Jian-zhong FU Nian WANG Xian-hui DAI Xuan |
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| Affiliation: | 1.Department of Computer Science,Guangxi Normal University,Guilin 541004,China;2.Department School of Mathematics and Computer,Qinzhou University,Qinzhou 535000,China) |
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| Abstract: | This paper proposes a edge-preserving image denoising method.The noise point and noise-free point are computed by four directional convolutions operators,and noise-free point are not dealed with.The mininum distance noise-free point in the 3×3 neighborhood is obtained.If there is not noise-free point,the neighborhood is extended to 5×5.The median value of them is used to replace the noise point while existing noise-free point.Otherwise,the noise point is replaced by the average value of the maximum distance pixel.Experimental result shows that the algorithm can effectively remove image noise,and can better protect the image edge. |
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| Keywords: | convolution noise point noise-free point neighbourhood edge-preserving |
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