中文说明：人脸检测通过肤色建立模型，和计算欧拉数开运算等一系列处理可以检测出同一张图片中的多个人脸！效果不错哦
English Description：
Face detection can detect multiple faces in the same picture through a series of processing, such as skin color modeling, Euler number calculation and so on! The effect is good