中文说明：使用直方图均衡化函数、图像调整函数和自适应方图均衡化函数，编写用于增强索引图像对比度的程序，显示图像对比度增强效果
English Description：
Using histogram equalization function, image adjustment function and adaptive square image equalization function, the program for enhancing the contrast of index image is written to show the effect of image contrast enhancement