基于ETM^+热红外影像的南极云区与地面冰雪区的检测  

Detection of Cloud,Snow and Ice Based on ETM^+ Thermal Infrared Image in Antarctica

作　　者：鄂栋臣[1] 陈刚[1] 

机构地区：[1]武汉大学中国南极测绘研究中心,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2005年第10期913-916,共4页Geomatics and Information Science of Wuhan University

基　　金：国家测绘局南极地理信息获取及环境动态过程研究资助项目(146014020240406)

摘　　要：利用ETM+热红外波段影像对南极中山站附近的云区和冰雪区进行了自动检测,综合热辐射和纹理特征辅助分类,提出并使用加权最小距离分类器,获得了较好的分类效果。ETM^＋ thermal infrared image is used to detect cloud, snow and ice automatically around the Zhongshan Station in Antarctica. Better classification result is achieved by adding thermal radiation where brightness temperature information of ETM^＋ is used and texture feature of Entropy derived from gray level co-occurrence matrix. Then we improved the method of the minimum distance classification-the weighted minimum distance classification. This algorithm improves the accuracy to 96.0% in the experimental satellite image of ETM^＋ around Zhonshan Station of China in Antarctica.

关 键 词：极地 云雪检测 热辐射 纹理 ETM^+ 

分 类 号：P236[天文地球—摄影测量与遥感] P237.4[天文地球—测绘科学与技术]