一种改进的SAR图像斑点噪声滤波方法
An Enhanced SAR Image Speckle Filter
查看参考文献16篇
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文摘
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在过去的20多年中，提出了许多去除SAR图像斑点噪声的方法。这些方法的主要目的是去除斑点噪声而不破坏图像的空间分辨率和边缘信息。理论和实践表明去除图像的斑点噪声和保持图像边缘信息是无法同时完成的。现有大部分滤波器是在去除噪声和保持边缘之间进行折衷。在Han等人方法的基础上提出了一种在去除噪声和保持边缘方面最优的滤波器。它在去除噪声同时能够有效保持边缘信息。 |
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其他语种文摘
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This paper presents an idea to determinate the variant matching relationshinps among areal entities based on the overlay areas. Then a methodology to identify the counterpart elements based on the fuzzy classification of topological relationship is illustrated, which applies the concept of morphologic distance between areas introduced by Winter and the concept of fuzzy topological relationship theory. The resulted topological relationship between areas indicates the discre pancy between the considered areal features and also shows the degree of being or not being belonged to the identical fea tures , which is important for further analysis or decision making. The methodology presented here enhances the technolo gy of feature matching in the area of map conflation. Tests show that the method is well performed and has the ability to identify the non-one-to-one matching relationship and is well suited for areal feature matching among urban geographic databases with the same scales as well as similar scales. |
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来源
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遥感学报
,2004,8(2):121-127 【核心库】
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关键词
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SAR
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图像斑点
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噪声滤波
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地址
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中国科学院遥感应用研究所, 遥感信息科学重点实验室, 北京, 100101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-4619 |
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学科
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自动化技术、计算机技术;环境科学基础理论 |
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基金
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国家863计划
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国家863计划
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中国科学院知识创新工程项目
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文献收藏号
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CSCD:1636383
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参考文献 共
16
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