https://blog.csdn.net/KayChanGEEK/article/details/79919417?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param
https://blog.csdn.net/u012123768/article/details/106881617
https://www.freesion.com/article/4703805499/
https://blog.csdn.net/weixin_43148051/article/details/106852263
https://blog.csdn.net/qq_39736982/article/details/107867037 （opencv中解决GitHub的raw.githubusercontent.com无法连接问题）
https://blog.csdn.net/length85/article/details/103767475 (提到了protobuf的问题)