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INSTALL.md

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Some installation and compilation notes

On Raspberry Pi 1 with Raspbian Lite

The aim is to compile OpenCV, install the necessary packages, Python 3, and a minimal window manager and display server. With this we can use OpenCV's imshow display function.

apt-get install build-essential cmake pkg-config
apt-get install libjpeg-dev libtiff5-dev libjasper-dev libpng12-dev
apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev
apt-get install libgtk2.0-dev
apt-get install libatlas-base-dev gfortran
apt-get install python3-dev
apt-get install python3-pip
pip3 install numpy
pip3 install picamera
apt-get install libgtkglext1 libgtkglext1-dev (OpenGL support for OpenCV)
apt-get install libgl1-mesa-dri (OpenGL support for minimal Xorg + Openbox)

Download OpenCV and opencv_contrib modules

cd ~
wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.0.0.zip
unzip opencv.zip
cd ..
wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.0.0.zip
unzip opencv_contrib.zip

Compile OpenCV (takes ages on a RPI 1):

sudo cmake -D CMAKE_BUILD_TYPE=RELEASE \
	-D CMAKE_INSTALL_PREFIX=/usr/local \
	-D INSTALL_C_EXAMPLES=OFF \
	-D INSTALL_PYTHON_EXAMPLES=OFF \
	-D BUILD_EXAMPLES=OFF \
	-D BUILD_DOCS=OFF
	-D OPENCV_EXTRA_MODULES_PATH=/root/opencv_contrib-3.0.0/modules
	-D WITH_OPENGL=0N ..

make -j1
make install
ldconfig

Python bindings have to be renamed:

cd /usr/local/lib/python3.4/dist-packages/
mv cv2.cpython-34m.so cv2.so

Verify OpenCV Python3 module:

$ python3
>>> import cv2
>>> cv2.__version__
'3.0.0'

Install a lightweight Xorg display server, Openbox window manager and LightDM login manager:

apt-get install --no-install-recommends xserver-xorg
apt-get install openbox
apt-get install lightdm

Reboot, done!

Pygame installation on Raspberry Pi 1

Pygame can be used to render to the frame buffer through Python.

apt-get install python3-dev python3-numpy libsdl-dev libsdl-image1.2-dev \
  libsdl-mixer1.2-dev libsdl-ttf2.0-dev libsmpeg-dev libportmidi-dev \
  libavformat-dev libswscale-dev libjpeg-dev libfreetype6-dev
apt-get install python-pygame

Compiling OpenCV on Mac OS Yosemite (10.10.5)

Homebrew package failed to install OpenCV, whatever option was passed in. Compile OpenCV manually. Follow Adrian Rosebrock's instructions but before the CMake configuration change in vtkRenderingOpenGL to vtkRenderingOpenGL2 in cmake/OpenCVDetectVTK.cmake on line 6.

CMake command (replace the Python3 folders according to your version):

cmake -D CMAKE_BUILD_TYPE=RELEASE \
	-D CMAKE_INSTALL_PREFIX=/usr/local \
	-D PYTHON3_PACKAGES_PATH=/usr/local/lib/python3.5/site-packages \
	-D PYTHON3_LIBRARY=/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/lib/libpython3.5m.dylib \
	-D PYTHON3_INCLUDE_DIR=/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/include/python3.5m \
	-D PYTHON3_EXECUTABLE=$(which python3) \
	-D INSTALL_C_EXAMPLES=OFF \
	-D INSTALL_PYTHON_EXAMPLES=ON \
	-D BUILD_EXAMPLES=OFF \
	-D BUILD_DOCS=OFF \
	-D WITH_FFMPEG=OFF \
	-D WITH_VTK=OFF \
	-D BUILD_opencv_python3=ON \
	-D OPENCV_EXTRA_MODULES_PATH=/Users/Arnaud/opencv_contrib/modules ..

make -j2
make install