Reference

01. https://docs.opencv.org/master/d9/df8/tutorial_root.html

02. https://blog.csdn.net/weixin_41695564/article/details/79712393

03. http://www.sohu.com/a/249546415_473283

04. https://en.wikipedia.org/wiki/OpenCV

05. https://www.cnblogs.com/hujq1029/p/7096236.html

06.https://blog.csdn.net/wearge/article/details/77373822

07. https://github.com/opencv/opencv/tree/master/data/haarcascades

08. https://www.leiphone.com/news/201704/rYdpAvh4SvgVPpRQ.html

09. https://medium.com/@ageitgey/machine-learning-is-fun-part-4-modern-face-recognition-with-deep-learning-c3cffc121d78

10.https://github.com/ageitgey/face_recognition