1、图象灰度处理：将<24位真彩色图像>转换成<256级灰度图像>；（*.bmp文件）

2、图像的灰度直方图：分别反映转换前后图像中的灰度级与出现这种灰度的概率之间的关系；

3、其它功能：存盘、清屏和退出应用程序功能。

源程序用Pascal语言编写。

含有三种不同的算法作为比较，并且附有详细的软件设计的思路说明。-1, gray-scale image processing: to < 24-bit true color image>　converted into < 256 gray image >　(*. bmp file) 2, the gray-scale image histogram: before and after, respectively, reflecting the conversion of grayscale images gray level and the probability of such a relationship　3 other functions: save, money from the screen and application functionality. Pascal language source code to use. Containing three different algorithms for comparison, and software design, including a detailed descr iption of the idea.