Automatic extraction of lunar impact craters from Chang'E-1 satellite photographs

查看全文 作　　者：WAN [1,2]Cong;CHENG [1]WeiMing;ZHOU [1,2]ZengPo;ZHAO [1,3]ShangMin;XIA [1,2]Yao

机构地区：[1]State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographic and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;[2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China;[3]Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2012年第55卷第1期,共8页

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 40871177 and 41171332);the Knowledge Innovation Project of the Institute of Geographic and Natural Resources Research, the Chinese Academy of Sci-ences (Grant No. 201001005) 摘　　要：The distribution characteristics of the impact craters can provide a large amount of information on impact history and the lunar evolution process. In this research, based on the digital elevation model (DEM) data originating from Change'E-1 CCD stereo camera, three automatic extraction methods for the impact craters are implemented in two research areas: direct extraction from flooded DEM data (the Flooded method), object-oriented extraction from DEM data by using ENVI ZOOM function (the Object-Oriented method) and novel object-oriented extraction from flooded DEM data (the Flooded Object-Oriented method). Accuracy assessment, extracted degree computation, cumulative frequency analysis, shape and age analysis of the extracted craters combined display the following results. (1) The Flooded Object-Oriented method yields better accuracy than the other two methods in the two research areas; the extraction result of the Flooded method offers the similar accuracy to that of the Object-Oriented method. (2) The cumulative frequency curves for the extracted craters and the confirmed craters share a similar change trajectory. (3) The number of the impact craters extracted by the three methods in the Imbrian period is the largest and is of various types; as to their age earlier than Imbrain, it is difficult to extract because they could have been destroyed. 关键词：自动提取方法陨石坑卫星照片嫦娥一号月球 DEM数据面向对象洪水淹没

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Automatic extraction of lunar impact craters from Chang'E-1 satellite photographs

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