（笔记自用）Darknet-yolov3 OpenCV-3.4.0 安装
1、opencv下载3.4.0版本opencv(测试成功)Releases - OpenCVwget https://github.com/opencv/opencv/archive/3.4.0.zip安装参考：Ubuntu下编译Opencv4.0及opencv_contribute模块步骤详解 - 云+社区 - 腾讯云Ubuntu 16.04 安装opencv的各种方法（含opencv contrib扩展包安装方法）_ZeroZone零域的博客-CSDN博客_ubuntu安装
