实现对图像的打开、另存、RGB直方图和灰度直方图的绘制、图像的指数、对数、GAMMA校正,The realization of the image open, save, RGB histogram and histogram drawing, image index, logarithm, GAMMA correction

图像的象素值变换，包括亮度、对比度和GAMMA校正算法，环境是OPENCV4.0，VC6.0。算法参考了MATLAB函数 imadjust 。-Transform the pixel values of images, including brightness, contrast and GAMMA correction algorithm, the environment is OPENCV4.0, VC6.0. Algorithm MATLAB function reference imad