Ubuntu 16.04.1下编译安装opencv-3.4.1

非root用户安装

安装cmake

sudo apt-get install cmake

下载源码，要下载相同版本

opencv

https://github.com/opencv/opencv/releases

opencv_contrib

https://github.com/opencv/opencv_contrib/releases

放到相同路径并解压，也可以用git下载

git clone https://github.com/Itseez/opencv.git

准备编译

cd ~/opencv_path

mkdir build

cd build

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=your_opencv_install_path ..

make -j8 # -j8 runs 8 jobs in parallel.

make install

配置环境变量

vi .bashrc

文件末尾添加

export PATH="$PATH:your_opencv_install_path "

export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:your_opencv_install_path /lib"

安装结束。