为了更好地进行遥感图像的投影变换，在对传统的投影变换方法进行比较研究的基础上，给出了优化方法，首先阐述了地图投影和投影变换的基本原理。其后分析了进行栅格图像的投影变换的必要性和不同于矢量变换的不同特征，并重点介绍了图像投影变换的算法以及优化方法；最后，采用Visual C 作为软件平台，开发了遥感图像投影变换的模块。

This paper expounds the fundamental theory of map projection and projection transformation,and analyzes the requirement of raster picture projection transformation and the characteristics differing from vertex projection transformation. The arithmetic of picture projection transformation and its optimization methods are emphasized. The authors take Visual C++ as software platform and develop the system of raster picture projection transformation.