opencv安装

https://jingyan.baidu.com/article/73c3ce285feb20e50343d9ff.html

https://www.jianshu.com/p/49a68d2f0b6a

https://blog.csdn.net/maizousidemao/article/details/81474834

https://www.cnblogs.com/woshitianma/p/3853447.html

https://blog.csdn.net/ian_qi/article/details/79795988

https://blog.csdn.net/ian_qi/article/details/79795988

https://www.cnblogs.com/cxj123/p/7105121.html（最好）

https://blog.csdn.net/omodao1/article/details/80276834