Ubuntu 16.04 LTS OpenCV C / C++ and Python interface (接口)
1. Install OpenCV from the Ubuntu Repository (apt) - Python 调用接口
Python3
sudo apt update
sudo apt install python3-opencv
Python2
sudo apt update
sudo apt install python-opencv
OpenCV version
python3 -c "import cv2; print(cv2.__version__)"
python2 -c "import cv2; print(cv2.__version__)"
Uninstall OpenCV
sudo apt remove python3-opencv -y
sudo apt remove python-opencv -y
2. Install OpenCV from the Ubuntu Repository (pip) - Python 调用接口
Python3
sudo apt update
sudo pip3 install opencv-python
sudo pip3 install opencv-contrib-python
sudo pip3 install opencv-python==4.2.0.32
sudo pip3 install opencv-contrib-python==4.2.0.32
sudo pip3 install -i https://pypi.douban.com/simple opencv-python==3.4.1.15
sudo pip3 install -i https://pypi.douban.com/simple opencv-contrib-python==3.4.1.15
Python2
sudo apt update
sudo pip2 install opencv-python
sudo pip2 install opencv-contrib-python
sudo pip2 install opencv-python==4.2.0.32
sudo pip2 install opencv-contrib-python==4.2.0.32
sudo pip2 install -i https://pypi.douban.com/simple opencv-python==3.4.1.15
sudo pip2 install -i https://pypi.douban.com/simple opencv-contrib-python==3.4.1.15
OpenCV version
python3 -c "import cv2; print(cv2.__version__)"
python2 -c "import cv2; print(cv2.__version__)"
Uninstall OpenCV
sudo pip3 uninstall opencv-python
sudo pip3 uninstall opencv-contrib-python
sudo pip2 uninstall opencv-python
sudo pip2 uninstall opencv-contrib-python
3. Install OpenCV from the Ubuntu Repository (pip) - C / C++ 调用接口 (OpenCV 2.4.9.1)
Install OpenCV
sudo apt-get update
sudo apt-get install libopencv-dev -y
Uninstall OpenCV
sudo apt-get autoremove libopencv-dev
OpenCV version
pkg-config --modversion opencv
4. Install OpenCV 4 from the official site - C / C++ 调用接口 (OpenCV 4.2.0)
Install OpenCV
https://blog.csdn.net/chengyq116/article/details/104297224
bash install-opencv.sh
OpenCV version
pkg-config --modversion opencv4
Uninstall OpenCV
进入 .../OpenCV/build/ 目录，执行 sudo make uninstall。
sudo make uninstall
