基于ArcScan的遥感影像中水域信息快速提取方法

将遥感信息的动态性和地理信息系统的分析功能相结合,可以快速、准确地分析水域动态变化。作者在总结前人研究的基础上,提出了基于ArcScan自动矢量化水体边界、快速提取水域信息的方法,文章主要介绍了ArcScan模块、研究流程与具体的方法,并以安徽巢湖2个时期的水域信息提取为例,取得了很好的效果;实践表明,在遥感图像分类的基础上,基于ArcScan自动提取水域信息的方法获得底图要素,可以大大提高专题制图的质量、效率和灵活性。

Method for quickly extracting water area information in remote sensing images based on ArcScan

The dynamic change of the water area can be analyzed quickly and accurately by unifying the dynamic characters of the remote sensing information and the spatial analysis function of GIS.On the basis of ArcScan,a method is proposed,which can automatically vectorize the water body boundary and fast extract the information of the water area.The Arcscan module,the research flow and the concrete method are introduced.The water information extraction of Chaohu Lake in Anhui at two different periods is given as an example,and some good results have been obtained.Practice shows that based on remote sensing image classification,the base map elements can be obtained with the method of ArcScan based automatic extracting of water area information,which greatly enhances the quality,efficiency and flexibility of the special charting.