Installing OPENCV on the Raspberry Pi

Install the runtime library first

sudo apt-get updatesudo apt-get upgradesudo apt-get install -y  Build-essentialsudo apt-get install -y cmake sudo apt-get install -y  pkg-config sudo apt-get install -y libpng12-0 libpng12-dev libpng++- Dev libpng3 sudo apt-get install -y libpnglite-devsudo apt-get install  -y zlib1g-dbg zlib1g zlib1g-dev sudo apt-get install -y pngtools  libtiff4-dev libtiff4 libtiffxx0c2 libtiff-tools sudo apt-get install  -y libjpeg8 libjpeg8-dev libjpeg8-dbg libjpeg-progs sudo apt-get  Install -y ffmpeg libavcodec-dev libavcodec53 libavformat53 libavformat-dev  sudo apt-get install -y libgstreamer0.10-0-dbg libgstreamer0.10-0   libgstreamer0.10-dev sudo apt-get install -y libxine1-ffmpeg  libxine-dev libxine1-bin sudo  Apt-get install -y libunicap2 libunicap2-dev sudo apt-get install -y  libdc1394-22-dev libdc1394-22 libdc1394-utils sudo apt-get install -y  swig sudo apt-get install -y libv4l-0 libv4l-dev sudo apt-get  install -y python-numpy sudo apt-get install -y libpython2.6  Python-dev python2.6-dev sudo apt-get install -y libgtk2.0-dev

Download the source code and compile

wget http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.9/opencv-2.4.9.zip/download Opencv-2.4.9.zipunzip OPENCV-2.4.9.ZIPRM opencv-2.4.9.zipcd opencv-2.4.9mkdir BUILDCD buildcmake-d CMAKE_BUILD_TYPE= release-d cmake_install_prefix=/usr/local-d build_python_support=on-d Build_examples=on. Make

It takes a long time to compile and install

sudo make install/usr/local/lib #没作用似乎

Adding environment variables

sudo nano/etc/bash.bashrc

Pkg_config_path= $PKG _config_path:/usr/local/lib/pkgconfig Export Pkg_config_path #添加到上面的那个文件的末尾中

To finish, start designing happily, here is an example of showing a picture opshow_demo.py:

Import CV2 Import NumPy as NP # read imagesimg = Cv2.imread ("./rubylin.jpg") # show Imagecv2.imshow ("Image", IMG) cv2 . Waitkey (0) cv2.destroyallwindows ()

Installing OPENCV on the Raspberry Pi