城市正射影像图任意范围裁切的算法设计及实现

The Algorithm and Realization of the City Digital Orthophoto Maps for Automatic Clipping of Arbitrary Scope

根据城市正射影像图的特点,在建立了影像的像素坐标和空间地理坐标对应关系的基础上,以VB 6.0实现了任意图幅和任意范围影像图的拼接与裁切,本文给出的算法和代码具有易于理解,不依赖于其他平台而便于移植,功能强大等优点。

Firstly,According to the properties of most city digital orthophoto maps of China,the corresponding relationship of pixels and map coordinates is build.Using VB 6.0 and coding,the City Digital Orthophoto Maps for automatic connecting and clipping of arbitrary scope is realized.The algorithm and code have some advantages as follows：easy to understand,independent of any platforms,and powerful to use.