在Ubuntu系统上安装OpenCV C++

1.更新系统

sudo apt-get update
sudo apt-get upgrade

2.安装相关的依赖

sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install libjpeg-dev libpng-dev libtiff-dev libjasper-dev libatlas-base-dev gfortran

3.下载OpenCV

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

4.进入到OpenCV所在的路径

cd opencv
mkdir build

5.编译安装
依次输入如下命令：

cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
make -j4
sudo make install
sudo nano /etc/dphys-swapfile
sudo /etc/init.d/dphys-swapfile stop
sudo /etc/init.d/dphys-swapfile start
g++ -o test_opencv test_opencv.cpp `pkg-config opencv --cflags --libs`
./test_opencv