ubuntu18.04+opencv3.4.3+opencv_c

1、首先下载，安装ubuntu，opencv_contrib下载
[https://ubuntu.com/download]
[https://github.com/opencv/opencv_contrib/releases]
[https://sourceforge.net/projects/opencvlibrary/files/opencv-unix/3.4.3/opencv-3.4.3.zip/download]
2、环境配置
（1）依赖项配置
sudo apt-get install build-essential
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev libgtk-3-dev
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff5-dev libdc1394-22-dev
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev liblapacke-dev
sudo apt-get install libxvidcore-dev libx264-dev
sudo apt-get install libatlas-base-dev gfortran
sudo apt-get install ffmpeg
（2）编译
cd opencv

mkdir build

cd build

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local OPENCV_EXTRA_MODULES_PATH=../${contrib模块的文件名称}/modules/ ..

make

sudo make install
（3）环境配置
sudo /bin/bash -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
pkg-config --modversion opencv