图像的灰度变换。改变图像输入、输出映射的灰度参数范围(拉伸和反比)，观看图像处理结果。

修改可选参数gamma值，使其大于1，等于1和小于1，观看图像处理结果。

对图像直方图均衡化处理，显示均衡前后的直方图和图像。

图像的数字化参数取样频率(像素个数)、量化级数关系-

Gray-scale transformation of the image. Change the image input and output mapping of the gray-scale range of parameters (tension and inversely proportional to), watching the results of image processing.

Modify the optional parameter gamma value, it is greater than 1, equal to 1 and less than 1, watching the results of image processing.

The image histogram equalization, histogram before and after equalization and image.

Digital parameters of the image sampling frequency (number of pixels) to quantify the progression relationship