通过分类器实现人眼检测，用红色矩形框画出人眼睛的区域。-eye detection

opencv人眼检测算法，此算法是基于haar分类器的简单算法，可以实现摄像头视频的实时监测。算法简单但是很是实用，所以上传与大家分享-opencv eye detection algorithm, which is a simple algorithm based on haar classifier, can achieve real-time video surveillance camera. Algorithm is simple but very practical, so uplo