树莓派安装opencv及其扩展包contrib（python3）

更换源

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安装依赖

• sudo apt-get update && sudo apt-get upgrade
  sudo apt-get install build-essential cmake pkg-config -y
  sudo apt-get install libjpeg-dev libtiff5-dev libjasper-dev libpng-dev -y
  sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev -y
  sudo apt-get install libxvidcore-dev libx264-dev -y
  sudo apt-get install libfontconfig1-dev libcairo2-dev -y
  sudo apt-get install libgdk-pixbuf2.0-dev libpango1.0-dev -y
  sudo apt-get install libgtk2.0-dev libgtk-3-dev -y
  sudo apt-get install libatlas-base-dev gfortran -y
  sudo apt-get install libhdf5-dev libhdf5-serial-dev libhdf5-103 -y
  sudo apt-get install libqtgui4 libqtwebkit4 libqt4-test python3-pyqt5 -y

安装numpy

• pip3 install numpy

直接用pip安装

• pip3 install opencv-contrib-python==4.1.0.25