浅析城市遥感影像地图分类制作方法

Analysis of Classification and Production Methods of Urban Remote Sensing Image Map

遥感技术对地图资料的来源、现势性以及制图工艺等方面产生了很大影响,促进了传统地图制图技术的变革。本文以某市Landsat-8卫星影像及行政区划图为数据源,探讨了利用遥感影像制作城市影像地图的方法,用ENVI软件制作城市影像地图的主要流程及其关键技术,重点研究了遥感影像地图的不同增强方法和监督分类方法,并通过实验结果的对比分析,得到最适合某市的增强方法为辐射增强,监督分类方法为最大似然估计法。最后根据监督分类结果制定出适合某市的影像地图制作方法,制作出一幅某市遥感影像地图。

Remote sensing technology has a great influence on the source,reality and mapping technology of map data,and promotes the transformation of traditional mapping.Taking Landsat-8 satellite image and administrative division map of a city as the data source,this paper aims to explore the method of making urban image map using remote sensing image.In this paper,the main process and key technologies of making urban image map with ENVI software are studied,and the different enhancement methods and supervised classification methods of remote sensing image map are mainly studied.Through the comparative analysis of experimental results,the most suitable enhancement method for a city is radiation enhancement and supervised classification method is maximum likelihood estimation;Finally,according to the results of supervised classification,a suitable image map making method is worked out,and a remote sensing image map of a city is made.