说明：  利用PILLOW库识别色情图片，我们定义非色情图片的判定规则是（满足任意一个判定为真） 皮肤区域的个数小于 3 个。 皮肤区域的像素与图像所有像素的比值小于15%。 最大皮肤区域小于总皮肤面积的 45%。 皮肤区域数量超过 60 个。 这些规则你可以根据自己的实际尝试性修改，知道程序效果让你满意为止。
(Identification of pornographic pictures by pillow LibraryWe define the rule of non pornographic pictures as (satisfy any one of the criteria is true) The number of skin areas is less than 3. The ratio of pixels in the skin area to all pixels in the image is less than 15%. The largest skin area is less than 45% of the total skin area. There are more than 60 skin areas. You can try to modify these rules according to your own practice until you are satisfied with the effect of the program.)