【摘要】 控制点采集是遥感应用中的一项重要工作 ,由于通常所采用的地形图出版时间较早 ,为采集控制点带来困难。本文介绍的控制点采集方法是 :首先 ,通过Coreldraw作图软件 ,充分利用河流、道路等地物特征 ,将遥感影像与地形图调配吻合 ,然后 ,在地形图上选取公里网格点作为控制点 ,同时注明坐标值。利用该方法采集的控制点进行几何校正 ,其精度可以控制在 0 .5个像元内 ,可以满足TM影像图几何纠正的精度要求更多还原

【Abstract】 The collection of controlling points is an important work in remote sensing application. As the topographic maps are generally out-of-date, there exist some difficulties in collecting controlling points. In this paper, a new method for collecting control points is recommended. Firstly, employing the software of coreldraw and making full use of the characteristics of rivers, roads and other surface features, we can adjust the image and make it perfectly consistent with the topographic map. Second, the points of kilometer web in the topographic map are selected as controlling points, with their coordinates indicated. In this way, the difficulties can be overcome.更多还原