广东省1:50万TM假彩色卫星影像图的研制

介绍采用两种不同投影系统的卫星资料制作１：５０万ＴＭ卫星影像图的基本工艺及关键技术，（１０对ＴＭ卫星底片进行密度测定和反差分析，（２）卫星像片平面位置误差赋和控制；（３）卫星像片彩色合成色调协调一致控制，在此基础上分析论述了ＴＭ卫星影像图的特点及其在地理学上的应用。

COMPILATION OF 1 :500 000 TM PSEUDO COLOR LANDSAT IMAGE MAPS OF GUANGDONG PROVINE

Traditional method of Cartography is lather slow in compilation of map, and is long in maP renewing cycle, so it can not meet the needs of modern development. The Landsat image cartography supplies a new way to the rapid formation of map. A TM Landsat image map is characterized by its macroscopic features and high Precision, which can be used as valuable basic material in the research of land atilization and geological survey, etc. The TM pseudo color Landsat image maps of Guangdong Province (1:500 000) was drawn up by using the technique of Landsat image Cartography and achieved good results. The main steps and key techniques in making 1:500 000 TM image map with two different Projection system are as followS: 1) The density measurement and the contrast analysis of TM films; 2) The control and distribution of horizontal position errors of TM films; 3) The tone adjustment in color composition of the image map.