ubuntu 2004 安装OpenCV

# 1. 系统更新
sudo apt update
sudo apt upgrade

# 2. 安装依赖
sudo apt install build-essential cmake git 
sudo apt install libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev 
sudo apt install libjpeg-dev libpng-dev libtiff5-dev libjasper-dev libdc1394-22-dev libeigen3-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev sphinx-common libtbb-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libopenexr-dev libgstreamer-plugins-base1.0-dev libavutil-dev libavfilter-dev libavresample-dev

# 如果无法安装 libjasper-dev
sudo add-apt-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt install libjasper1 libjasper-dev

# 3. 下载源代码
sudo su # change to root
cd /opt # 3rd party software install dir, not necessary
git clone https://github.com/opencv/opencv.git
cd opencv 
git checkout 4.5.5
cd ..

git clone https://github.com/opencv/opencv_contrib.git
cd opencv_contrib
git checkout 4.5.5
cd ..

# 4. 编译和安装
cd opencv
mkdir release
cd release
cmake -D BUILD_TIFF=ON -D WITH_CUDA=OFF -D ENABLE_AVX=OFF -D WITH_OPENGL=OFF -D WITH_OPENCL=OFF -D WITH_IPP=OFF -D WITH_TBB=ON -D BUILD_TBB=ON -D WITH_EIGEN=OFF -D WITH_V4L=OFF -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules ..
make -j8 # multi task
make install
ldconfig

# 检查
pkg-config --modversion opencv