ubuntu16.04下载opencv3.4.0

首先安装opencv3.4.0:
1.下载源码

$ wget https://github.com/opencv/opencv/archive/3.4.0.zip

2.解压源码

$ unzip 3.4.0.zip

3.安装依赖库

$ sudo apt-get install build-essential
$ sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
$ sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

4.从源代码构建OpenCV

$ cd opencv-3.4.0
$ mkdir build
$ cd build
$ cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local ..
$ make
$ sudo make install

检测是否安装成功

$ cd ../samples/cpp/example_cmake
$ cmake .
$ make_example

如果出现了一个界面，打开了你的摄像头并显示Hello OpenCV。
那么就说明安装成功拉。