| 一种适用于SAR图像边缘检测的序贯算法 |
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| 引用本文： | 方勇,李志勇.一种适用于SAR图像边缘检测的序贯算法[J].测绘学院学报,2001,18(3):189-191. |
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| 作者姓名： | 方勇 李志勇 |
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| 作者单位： | [1]61540部队，陕西西安710054 [2]61363部队，陕西西安710054 |
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| 摘 要： | 提出了一种用于检测SAR图像上阶跃性边缘的序贯算法。由于SAR图像上存在大量的光斑噪声而使图像质量受到严重影响，而光斑噪声属于乘性噪声，不服从高斯分布，因此常用的图像处理方法难以取得好的效果。文中首先根据光斑噪声模型，自动确定图像中高反差部分，然后采用具有高抗噪性能的边缘检测算子，进行边缘提取。实验证明该算法明显提高了特征提取速度，同时具备良好的抗噪声能力。
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| 关 键 词： | 边缘检测 SAR图像 光斑噪声 序贯算法 遥感图像处理 |
A Sequential Algorithm of Edge Detection for SAR Image |
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| FANG Yong ,LI Zhi-yong.A Sequential Algorithm of Edge Detection for SAR Image[J].Journal of Institute of Surveying and Mapping,2001,18(3):189-191. |
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| Authors: | FANG Yong LI Zhi-yong |
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| Institution: | FANG Yong 1,LI Zhi-yong 2 |
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| Abstract: | The paper proposes a sequential algorithm for step edge detection in SAR image. For lots of speckle, the SAR image becomes horribly destroyed. Because the speckle is a multiple noise, and non-gauss distribution. simple image processing method is hard to get good result. In this paper, a method is proposed: firstly high contrast regions in image are determined adaptively based on speckle model, secondly an edge detection algorithm with high anti-noise ability is used to work. The experimental result demonstrates the algorithm and has shorter processing time and better anti-noise ability. |
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| Keywords: | edge detection SAR image processing speckle noise |
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