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| 基于特征保持的线性多通道最优求和SAR图像滤波算法 | |
| 引用本文： | 杨沈斌,李秉柏,申双和,张萍萍.基于特征保持的线性多通道最优求和SAR图像滤波算法[J].测绘学报,2006,35(4):364-370. |
| 作者姓名： | 杨沈斌 李秉柏 申双和 张萍萍 |
| 作者单位： | 1. 南京信息工程大学,应用气象系,江苏,南京,210044;江苏省农业科学院,农业资源与环境研究所,江苏,南京,210014 2. 江苏省农业科学院,农业资源与环境研究所,江苏,南京,210014 3. 南京信息工程大学,应用气象系,江苏,南京,210044 |
| 基金项目： | 国家863计划项目(2005AA132030x210)，农业部资源遥感与数字农业重点开放实验室开放课题项目 |
| 摘 要： | 在线性多通道最优求和滤波算法的基础上,提出一种基于特征保持的线性多通道最优求和滤波算法。该方法结合图像局域方差系数和具有恒虚警概率的比值结构检测,对滤波窗口内图像的纹理结构进行检测和判断,有区别地进行滤波去噪。该算法在去除斑点噪声的同时,可减少边缘、线及点目标等纹理信息的损失。 |
| 关 键 词： | 斑点噪声 多通道滤波 SAR 边缘检测 |
| 文章编号： | 1001-1595（2006）04-0364-07 |
| 收稿时间： | 02 7 2006 12:00AM |
| 修稿时间： | 2006-02-072006-07-21 |
Structure Retaining Linear Multi-channel SAR Image Speckle Filter |
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| YANG Shen-bin,LI Bing-bai,SHEN Shuang-he,ZHANG Ping-ping.Structure Retaining Linear Multi-channel SAR Image Speckle Filter[J].Acta Geodaetica et Cartographica Sinica,2006,35(4):364-370. | |
| Authors: | YANG Shen-bin LI Bing-bai SHEN Shuang-he ZHANG Ping-ping |
| Institution: | 1. Department of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China 2. Institute of Agricultural Resources and Environment, Jiangsu Academy of Agriculture Sciences, Nanjing 210014, China |
| Abstract: | Over the past decade,multi-channel SAR image speckle filters have been widely used to suppress the speckle in multi-polarization,multi-temporal SAR images. They are carried out in an optimal way,which minimizes speckle while preserving the radiometry(and hence the information content).However,theses methods cannot effectively preserve spatial resolution of the individual channels.A structure retaining linear multi-channel optimal summation SAR image speckle filter has been proposed,which can be controlled both by the coefficient of variation and by various geometrical ratio detectors.The result shows that this structure retaining filter minimizes speckle while preserving spatial resolution and radiometry of the individual channels effectively. |
| Keywords: | speckle multi-channel filtering SAR edge detection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |