ASTER与WorldView-2结合提取岩性信息流程——以西藏物玛地区为例  

On process of lithologic information extraction by ASTER and WorldView-2 data: a case study of Wuma area in Tibet

作　　者：任梦依 陈建平[1,2] 

机构地区：[1]中国地质大学(北京),北京100083 [2]中国地质大学(北京)国土资源与高新技术研究中心,北京100083

出　　处：《地质学刊》2013年第4期585-592,共8页Journal of Geology

基　　金：中国地质调查局地质大调查项目"班公湖-怒江成矿带矿产资源遥感地质调查"(1212011121297)资助

摘　　要：以西藏物玛地区ASTER、WorldView-2图像为例,通过分析比较2种数据的系统特征,细化完善了遥感地质岩性信息提取的流程。首先,以ASTER图像为基础,利用其多波段的特点,采用比值法有效提取研究区岩矿信息;然后,以WorldView-2图像为底图,以其较高的分辨率提高信息提取结果的解译精度和几何精度。该方法综合了2种图像各自的特点,结合应用于遥感地质岩性信息提取,能较好地区别研究区内中性、基性火山岩、碳酸盐岩、碎屑岩类及一些蚀变岩体,提高了解译工作的精度和效率。Based on the WorldView-2 and ASTER image data in Wuma area, Tibet, the authors comparatively analyzed the system characteristics of the two kinds of data and refined the extraction process of lithologic information. First, based on ASTER image, the authors improved the interpretation accuracy and geometric accuracy in the information extraction results with higher resolution; then, based on WorldView-2 image as the base map, the authors improved the interpretation accuracy and geometric accuracy in the informa- tion extraction results with higher resolution. So the authors integrated the superiority of the WorldView-2 and ASTER data, and applied it in the geological interpretation work. As a result, it could distinguish the basic volcanic rocks, carbonate rocks, some clastic rocks and some altered rocks in the study area, and the accuracy and efficiency of interpretation work were improved.

关 键 词：WorldView-2 ASTER 矿物指数 岩性信息提取流程 西藏物玛 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]