Ubuntu16.04安装opencv3.4.1

opencv3.4.1在linux下安装的官方指导文档
opencv3.4.1官方下载地址
主要参考博客

安装依赖

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

下载源码

opencv3.4.1官方下载地址

进入下载目录

cd ~/Downloads/opencv-3.4.1  #进入到你克隆的opencv目录，注意是克隆到本地的opencv目录里
mkdir build  #新建一个build文件
cd build

源码编译安装

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local  ..
make -j8  #开启8个线程
sudo make install

配置一些OpenCV的编译环境首先将OpenCV的库添加到路径，让系统找到

sudo gedit /etc/ld.so.conf.d/opencv.conf   # 末尾添加/usr/local/lib  
sudo ldconfig  # 使得上面的配置路径生效

配置bash

sudo gedit /etc/bash.bashrc   
#末尾添加下面两行
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig  
export PKG_CONFIG_PATH  
# 保存，执行如下命令使得配置生效
source /etc/bash.bashrc 
# 更新
sudo updatedb   

测试一下

cd ~/Downloads/opencv-3.4.1/samples/cpp/example_cmake
cmake .
make
./opencv_example