大型遥感卫星影像挂图的制作

THE HUGE SATELLITE COLOR IMAGE MAPPING

本文以贵州省黔东南苗族侗族自治州为例，选择美国陆地资源卫星专题绘图仪ＴＭ数字图像资料，通过对图像的几何校正、不同时相的ＴＭ图像的镶嵌、按行政边界的开窗截剪以及对图像的增强、交通道路的迭合、图名及地名注记的处理，最后经扫描成胶片、放大洗相制成１∶２０万“黔东南州卫星影像图”，探讨了大型遥感卫星图像的设计。

The huge satellite color image map has widely been used in various departments,especially in governments,policy making units etc.. It is due to its overview to a large area, its real and 3 demensional feeling of ground landscape, richer information and beautiful color compared with these of other maps provided by surveying departments. With an increase in the resolution of satellite image,more and more attention has been paid to huge satellite color image mapping and its application. This paper discusses the computer digital mapping technique of “Satellite Image Map of South East Guizhou Autonomous Prefecture”(1:200000). At first, the landsat-5 TM data(Oct. 28, 1991) selected are geometrically corrected and composited TM5(R),TM4(G),TM3(B), and other different TM data in adjacent sheets acquired at different time are digitally mosaiced. Then the data are cut out digitally according to administrative boundary map,and the title,the network of communication, the name of several main cities or towns or mountains or rivers, are digitally overlaid on the map.At last,the data are digitally scanned and enlarged to form a huge TM composite color photograph. The technique of digital mapping and image processing can also be used for remote sensing electric map, GIS map, etc..