洪涝监测遥感图像识别及数据转换
投稿时间:2002-01-22  修订日期:2002-04-08  点此下载全文
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作者单位
冯锐 中国气象局, 沈阳大气环境研究所, 辽宁, 沈阳, 110016 
张玉书 中国气象局, 沈阳大气环境研究所, 辽宁, 沈阳, 110016 
中文摘要:利用NOAA/AVHRR资料监测的洪涝区域显示图,通过文件格式的转换,在地理信息系统Arc View3.1平台上,进行基于地理信息系统洪涝区内各类下垫面面积评估。主要技术包括:用边缘检测法进行洪涝区域的识别;麦卡托投影经纬度坐标转换成高斯-克吕格投影公里网格坐标;阐述写Shape file文件的注意问题。并以1995年8月4日辽宁洪涝灾害为例进行了说明。
中文关键词:图像识别  地理信息系统  NOAA/AVHRR  Shapefile
 
Recognition and Data Transform of Remote Sensing Images of Flood Monitoring
Abstract:The image files of regional flooded area obtained by NOAA/AVHRR are transformed into a desk geographical information system(ArcView3.1),so that the covering types and area of flooded surface can be estimated with the aid of the Geography Information System(GIS).The main techniques used are as follows:the method of border test is used to recognize the flooded area in the BMP images;the coordinates of longitude and latitude in marctor projection are transformed into the coordinates of kilometer grid in Gauss-Laguerre projection;the key writing techniques of Shapefile is described in an example of the flood in Liaoning Province in August 4,1995.
keywords:image recognition  GIS  NOAA/AVHRR  Shapefile
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