I’ve read many tutorials about building and installing OpenCV on a Raspberry Pi but they either did not work or were outdated. Hence, I decided to write down all steps required to build and install OpenCV 3.4.
# Update your system sudo rpi-update sudo apt-get update sudo apt-get upgrade # Change swap size sudo nano /etc/dphys-swapfile # Change this... CONF_SWAPSIZE=100 to this CONF_SWAPSIZE=1024 # Restart service sudo /etc/init.d/dphys-swapfile stop sudo /etc/init.d/dphys-swapfile start # Install packages sudo apt-get install build-essential cmake cmake-curses-gui pkg-config sudo apt-get install libatlas-base-dev gfortran sudo apt-get install \ libjpeg-dev \ libtiff5-dev \ libjasper-dev \ libpng12-dev \ libavcodec-dev \ libavformat-dev \ libswscale-dev \ libeigen3-dev \ libxvidcore-dev \ libx264-dev \ libgtk2.0-dev sudo apt-get -y install libv4l-dev v4l-utils sudo apt-get install python2.7-dev sudo apt-get install python3-dev pip install numpy pip3 install numpy # Install OpenCV wget https://github.com/opencv/opencv/archive/3.4.0.zip -O opencv.zip wget https://github.com/opencv/opencv_contrib/archive/3.4.0.zip -O opencv_contrib.zip unzip opencv.zip unzip opencv_contrib.zip cd opencv-3.4.0 mkdir build cd build sudo cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D BUILD_WITH_DEBUG_INFO=OFF \ -D BUILD_DOCS=OFF \ -D BUILD_EXAMPLES=OFF \ -D BUILD_TESTS=OFF \ -D BUILD_opencv_ts=OFF \ -D BUILD_PERF_TESTS=OFF \ -D INSTALL_C_EXAMPLES=OFF \ -D INSTALL_PYTHON_EXAMPLES=ON \ -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-3.4.0/modules \ -D ENABLE_NEON=ON \ -D WITH_LIBV4L=ON \ .. sudo make -j3 sudo make install sudo ldconfig # Fix library file name cd /usr/local/lib/python3.5/dist-packages/ sudo mv cv2.cpython-35m.so cv2.so |