摘要
正射影像图因为保留了航摄像片丰富的影像信息又具有地形图的特征,因此,在实际生产中得到了越来越广泛的应用。制作正射影像图有各种各样的方法,当前一般采用的是数字微分纠正技术。对于航摄像对,可以直接通过像对解算像点的地面点高程,进而制作影像重叠区的正射影像。然而,购买生产工作区的航摄像对制作正射影像图,无疑会成倍地增加工作成本,因此不少研究者试图探讨单张航片生产正射影像的方法。文中介绍了利用单张航摄像片制作正射影像图的几种典型方法,并给出了它们的算法实现,最后作了简单的对比分析。
Orthophotomap has been increasingly used to practical production because it keeps rich aerial photograph information and has the feature of topographic map. There are various ways to make Orthophotomap, out of which digital differential rectification technique is commonly used at present. For aerial photograph pair, the Orthophotomap of the image- overlapped region can be made by calculating directly spot height at image point. However, purchasing aerial photograph pair of production area to make Orthophotomap will no doubt double the processing cost, therefore many researchers have been trying to seek methods to make Orthophotomap with single aerial photograph. In the paper, several typical ways in this respect are introduced and their algorithmic realization are given, furthermore, a simple comparison and analysis are also made.
出处
《矿山测量》
2003年第2期12-14,共3页
Mine Surveying
