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| 一种基于均值比率和最佳熵的SAR影像边缘检测方法 | |
| 引用本文： | 刘俊怡,李德仁,李微,梅新.一种基于均值比率和最佳熵的SAR影像边缘检测方法[J].武汉大学学报(信息科学版),2007,32(6):494-497. |
| 作者姓名： | 刘俊怡 李德仁 李微 梅新 |
| 作者单位： | 1. 武汉大学遥感信息工程学院,武汉市珞喻路129号,430079 2. 武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,430079 3. 中国科学院遥感应用研究所,北京市大屯路9718信箱,100101 |
| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
| 摘 要： | 针对比率边缘检测算子提出了一种自动确定阈值的方法,该方法引入最佳熵的理论到SAR边缘检测中,把基于比率的边缘检测均值比率影像分割成边缘和非边缘两类。此方法执行起来简单、快速,无需人工干预,能避免人为因素的影响。 |
| 关 键 词： | SAR影像 边缘检测 自动阈值 均值比率 最佳熵 |
| 文章编号： | 1671-8860（2007）06-0494-04 |
| 修稿时间： | 2007-03-12 |
A Method for SAR Imagery Edge Detection Based on Ratio of Averages and Optimal Entropy |
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| LIU Junyi,LI Deren,LI Wei,MEI Xin.A Method for SAR Imagery Edge Detection Based on Ratio of Averages and Optimal Entropy[J].Geomatics and Information Science of Wuhan University,2007,32(6):494-497. | |
| Authors: | LIU Junyi LI Deren LI Wei MEI Xin |
| Institution: | 1 School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;2 State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing,Wuhan University, 129 Luoyu Road, Wuhan 430079, China;3 Institute of Remote Sensing Applications, Chinese Academy of Sciences, P.O. Box 9718, Datun Road, Beijing 100101, China |
| Abstract: | A method is proposed to automatically determine the threshold according to the image feature based on ratio edge detector instead of predefining it as before.The principle of optimal entropy into the edge detection of SAR image is introduced,which classifies the intermediate result image of ratio-based edge detector into two classes: edge and non-edge.The presented method performs simply and fast,needless of manual intervention,which can avoid the influence of human factors. |
| Keywords: | SAR imagery edge detection automatic determining threshold ratio of avera ges optimal entropy |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |