中文说明：灰度世界算法，Grey World算法根据图像的颜色信息进行图像色偏的移除，因此图像颜色信息在一定程度上决定了该算法色偏移除的效果。Funt等人用实验证明了图像颜色数量与Grey World算法的校正结果的关系，其中图像颜色数量越多，算法的校正误差越小；而图像颜色数量越少，算法的校正误差就越大。
English Description：
Gray world algorithm, gray world algorithm removes the color deviation of the image according to the color information of the image, so the color information of the image determines the effect of the algorithm to a certain extent. Funt et al. Proved the relationship between the number of image colors and the correction results of grey world algorithm by experiments. The more the number of image colors, the smaller the correction error of the algorithm; while the less the number of image colors, the larger the correction error of the algorithm.