Explorer/RaspberryPi/Visualprocessing/Opencv
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PIZero installation > 10h
PI3 installation > 4 hours
sudo apt-get install -y cmake sudo apt-get install -y python-numpy python3-numpy libpython-dev libpython3-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libtiff-dev zlib1g-dev libjpeg-dev libpng-dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev sudo apt-get install -y libatlas-base-dev gfortran
for raspberry pi3 sudo apt-get install libgtk2.0-dev
git clone https://github.com/opencv/opencv.git git clone https://github.com/opencv/opencv_contrib.git cd ~/opencv git checkout 4.3.0 cd ~/opencv_contrib git checkout 4.3.0
mkdir ~/opencv/build cd ~/opencv/build cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D INSTALL_PYTHON_EXAMPLES=OFF \ -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \ -D OPENCV_GENERATE_PKGCONFIG=YES \ -D BUILD_TESTS=OFF \ -D BUILD_PERF_TESTS=OFF \ -D BUILD_EXAMPLES=OFF ..
=> GStreamer: YES (1.14.4)
/etc/dphys-swapfile CONF_SWAPSIZE=2048 sudo /etc/init.d/dphys-swapfile stop sudo /etc/init.d/dphys-swapfile start
make & for raspberrypi3: make -j4&
sudo make install sudo ldconfig -v