| 低太阳高度角月球影像的陨石坑自动提取方法 |
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| 引用本文： | 张吴明,张孝斌,李巧枝,阎广建,周国清.低太阳高度角月球影像的陨石坑自动提取方法[J].宇航学报,2013,34(9):1246-1252. |
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| 作者姓名： | 张吴明 张孝斌 李巧枝 阎广建 周国清 |
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| 作者单位： | 1. 北京师范大学地理学与遥感科学学院,遥感科学国家重点实验室,环境遥感与数字城市北京市重点实验室, 北京 100875；
2. 广西空间信息与测绘重点实验室,桂林理工大学, 桂林 541004 |
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| 基金项目： | 国家自然科学基金项目（41171265和40801131）；遥感科学国家重点实验室自立重大项目、广西空间信息与测绘重点实验室开放基金项目(1103108-04)和国家863计划项目（2010AA122202） |
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| 摘 要： | 陨石坑是月球表面最重要的地形特征，对于研究月球的地质状况和地理状况具有重要的意义。充分考虑低太阳高度角影像中陨石坑特殊的拓扑结构和灰度分布特点，提出一种新的基于光照方向的陨石坑边缘连接方法，综合边缘线判别、边缘线组合、陨石坑判别的陨石坑筛选三步法，形成一套完整的低太阳高度角月球影像陨石坑自动提取流程。用低太阳高度角Lunar Orbit影像进行实验，检测成功率达到了73.9%，表明该方法对于低太阳高度角月球影像陨石坑的自动提取有较好的适用性。
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| 关 键 词： | 陨石坑提取 低太阳高度角 拓扑结构 灰度分布 月球影像 |
| 收稿时间： | 2012-05-15 |
Automatic Crater Extraction Method for Lunar Images under Low Solar Elevation Angle |
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| ZHANG Wu ming,ZHANG Xiao bin,LI Qiao zhi,YAN Guang jian,ZHOU Guo qing.Automatic Crater Extraction Method for Lunar Images under Low Solar Elevation Angle[J].Journal of Astronautics,2013,34(9):1246-1252. |
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| Authors: | ZHANG Wu ming ZHANG Xiao bin LI Qiao zhi YAN Guang jian ZHOU Guo qing |
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| Affiliation: | 1. School of Geography, State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing Key Laboratory of Environmental Remote Sensing and Digital City, Beijing 100875, China;
2. GuangXi Key Laboratory for Spatial Information and Geomatics, Guilin University of Technology, Guilin 541004, China |
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| Abstract: | Lunar crater is the most important terrain feature of the lunar surface, so craters have important meaning in the study of lunar geology and geography. Considering the special topology and gray distribution characteristics of lunar images under low solar elevation angle, an automatic crater extraction process is developed in this paper. This process mainly includes a new crater edge connection method based on the solar azimuth, the crater selection procedure combines discrimination of crater edges, matching of crater edges and crater screening. Lunar Orbit images of low solar elevation angle are used to do an experiment and the successful detection rate is 73.9%. The result shows that this process is useful for crater automatic detecting of lunar images under low solar elevation angle. |
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| Keywords: | Craters extraction Low solar elevation angle Topological structure Gray distribution Lunar image |
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