对彩色图片进行白平衡调节的灰色世界法，对一些偏色图片有较好的功效，但对有些偏色比较厉害的图片效果不是很明显,Color pictures of the white balance adjustment method of the gray world, for some color cast a better picture of the effect, but the color cast of some of the picture compared powerful effect is not very clear