This article describes how to install OpenCV 3 and its Python 3 bindings on macOS and Ubuntu.
pyenv users beware
Make sure to use system python because there is some tricky problem with OpenCV 3 install script.
To switch to system python, run
pyenv global system.
Install OpenCV 3 package from
homebrew/science, make sure to add
--with-python3 so we’ll also get its Python 3 bindings simultaneously.
brew tap homebrew/science brew install opencv3 --with-python3
After installing OpenCV 3, put OpenCV 3 path file as
opencv3.pth into brewed-
python3 site-packages directory, which indicates where the OpenCV 3 bindings installed.
echo /usr/local/opt/opencv3/lib/python3.6/site-packages >> /usr/local/lib/python3.6/site-packages/opencv3.pth
git clone https://github.com/opencv/opencv cd opencv git checkout 3.2.0 mkdir build cd build cmake \ -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D WITH_TBB=ON \ -D WITH_EIGEN=ON \ -D BUILD_NEW_PYTHON_SUPPORT=ON \ -D INSTALL_PYTHON_EXAMPLES=ON \ -D WITH_V4L=ON \ -D WITH_FFMPEG=OFF \ -D BUILD_EXAMPLES=OFF \ -D BUILD_TESTS=OFF \ -D BUILD_PERF_TESTS=OFF \ -D BUILD_DOCS=OFF \ -D BUILD_opencv_python2=OFF \ -D BUILD_opencv_python3=ON \ -D BUILD_opencv_video=OFF \ -D BUILD_opencv_videoio=OFF \ -D BUILD_opencv_videostab=OFF \ -D PYTHON_EXECUTABLE=$(which python) \ "$OPENCV_DIR" make -j2 sudo make install pip install opencv-python
python -c "import cv2;print(cv2.__version__)"
and you’ll got