Gray world认为R、G、B三个分量对光源的感知是等价的，该算法的基本思想是：通过利用公式求取三个基本颜色红、绿、蓝的像素平均值来确定出整个图像的整体平均值，再以整体平均值为基础调整每个像素的红、绿、蓝分量值，以达到校正色彩偏移的效果。物体表面的平均反射没有色度差。-Gray world that the R, G, B three components of light perception is equivalent to the basic idea of the algorithm is: by using the formula strike three basic colors red, green and blue pixels to determine the average value of the entire image the overall average value, then the whole basis of the average of each pixel to adjust the red, green and blue component values to achieve the correct color shift effect. The average reflectance of the surface is no color difference.