| 一种改进的精制极化Lee滤波算法 |
| |
| 引用本文： | 欧阳群东,巫兆聪,彭检贵.一种改进的精制极化Lee滤波算法[J].测绘科学,2011,36(5):136-138. |
| |
| 作者姓名： | 欧阳群东 巫兆聪 彭检贵 |
| |
| 作者单位： | 武汉大学遥感信息工程学院,武汉,430079 |
| |
| 基金项目： | 国家863计划资助项目(2007AA12Z143); 国家自然科学基金资助项目(40201039,40771157) |
| |
| 摘 要： | 为克服精致极化Lee滤波算法对极化信息保持不够理想的弊端,本文提出一种改进方法.其基本思路是先应用四分量分解算法将像素分成4种散射类型,然后在方向窗口内去除与中心像素散射特性不同的像素,最后基于同质区的局部统计特性进行滤波处理.试验表明,改进后的滤波算法较传统算法有更强的极化信息保持能力.
|
| 关 键 词： | 极化SAR 相干斑 精制极化Lee滤波 四分量散射模型 |
An improved method of Lee refined polarized filter |
| |
| OUYANG Qun-dong,WU Zhao-cong,PENG Jian-gui.An improved method of Lee refined polarized filter[J].Science of Surveying and Mapping,2011,36(5):136-138. |
| |
| Authors: | OUYANG Qun-dong WU Zhao-cong PENG Jian-gui |
| |
| Institution: | OUYANG Qun-dong,WU Zhao-cong,PENG Jian-gui(School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430079,China) |
| |
| Abstract: | An improved method for overcoming the deficiency of Lee refined polarized filter in preserving polarized information was proposed in present study.To implement this method,the paper firstly divided all pixels into four scattering categories based on the four-component decomposition algorithm.Then,pixels with different scattering characteristics to the centralized one were removed in edge-aligned window.Finally,speckle filtering was utilized according to the local statistical properties of homogeneous area.E... |
| |
| Keywords: | polarized Synthetic Aperture Radar speckle Lee refined polarized filter four-component scattering model |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
