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| 基于改进型GIW算法的TerraSAR-X图像斑点噪声抑制 | |
| 引用本文： | 严卫东,倪维平,边辉,芦颖,赵亦工.基于改进型GIW算法的TerraSAR-X图像斑点噪声抑制[J].电光与控制,2010,17(4). |
| 作者姓名： | 严卫东 倪维平 边辉 芦颖 赵亦工 |
| 作者单位： | 1. 西安电子科技大学电子工程学院,西安,710071;西北核技术研究所,西安,710024 2. 西北核技术研究所,西安,710024 3. 西安电子科技大学电子工程学院,西安,710071 |
| 摘 要： | 针对TerraSAR-X图像中的斑点噪声抑制问题,分析了噪声的基本数学模型,并考察了经典处理方法,进而结合Kuan滤波的基本思想,给出了一种改进型梯度倒数加权(GIW)滤波算法,利用邻域像素和中心像素的灰度梯度倒数及其邻域统计信息构造滤波加权模板,然后通过卷积操作实现斑点噪声的抑制。对TerraSAR-X图像处理的结果表明该算法原理简单,实现方便,可有效抑制图像中的斑点噪声,同时具有优良的边缘细节保持能力,非常适合边缘提取、目标检测等后续处理。 |
| 关 键 词： | TerraSAR-X图像 斑点噪声 噪声抑制 GIW算法 Kuan算法 |
Speckle Noise Reduction of TerraSAR-X Image Based on Modified GIW Algorithm |
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| YAN Weidong,NI Weiping,BIAN Hui,LU Ying,ZHAO Yigong.Speckle Noise Reduction of TerraSAR-X Image Based on Modified GIW Algorithm[J].Electronics Optics & Control,2010,17(4). | |
| Authors: | YAN Weidong NI Weiping BIAN Hui LU Ying ZHAO Yigong |
| Affiliation: | 1.School of Electronic Engineering;Xidian University;Xi'an 710071;China;2.Northwest Institute of Nuclear Technology;Xi'an 710024;China |
| Abstract: | As for the reduction of speckle noise in TerraSAR-X image,several classical algorithms are investigated based on the mathematical model analysis of the noise.A modified Gradient Inverse Weighted(GIW) filter algorithm is presented,which used the idea of the Kuan algorithm.In the algorithm,the gray gradient reciprocal of the neighborhood pixels and the center pixel,and the local statistics are used to construct the weighted filter mask,followed by the convolution operation to restrain the speckle noise.The ex... |
| Keywords: | TerraSAR-X image speckle noise noise reduction GIW algorithm Kuan algorithm |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |