中文说明：使用matlab编写代码实现对一副图像的直方图均衡化处理，其中包含直接使用Histqe函数直接对图形进行均衡化处理、使用Imhist函数直接转化图形的直方图的程序，也包含了不使用这两个函数，直接编写程序，用原始数组矩阵计算概率后进行均衡化处理，完成直方图的显示
English Description：
Using the MATLAB code to a histogram equalization for image processing, including direct graphic equalization directly using the Histqe function, the histogram using the Imhist function directly into the graphics program, and does not use these two functions, direct program, the original array matrix is used to calculate probabilities after the Equalization process, complete the display of the histogram