几何变换是最常见的图像处理手段，通过对变形的图像进行几何校正，可以得出准确的图像。常用的几何变换功能包括图像的平移、图像的镜像变换、图像的转置、图像的缩放、图像的旋转等等。目前数字图像处理的应用越来越广泛，已经渗透到工业、航空航天、军事等各个领域，在国民经济中发挥越来越大的作用。

作为数字图像处理的一个重要部分，本文介绍的工作是如何用Visual C++编程工具设计一个完整的应用程序，实现经典的图像几何变换功能。程序大概分为两大部分：读写BMP图像，和数字图像的几何变换。即首先用Visual C++创建一个多文档应用程序框架，在实现任意BMP图像的读写，打印，以及剪贴板操作的基础上，完成经典的图像几何变换功能。

-geometric transformation is the most common means of image processing, image deformation of geometric correction, can be an accurate picture. Transform common geometric features include image translation, the mirror image transform, image transfer home, image scaling, image rotation and so on. Current digital image processing applications have become wider, and have penetrated into the industrial, aerospace, military and other areas, the national economy will play an increasingly larger role. Digital image processing as a vital part of the work presented in this paper is how to use Visual C programming tools to design a complete application procedures and achieve the classic image geometry transform function. Procedures probably be divided into two parts : the reader BMP images, and digita