Script to install OpenCV 4.1 + contrib modules with Python3.5 bindings on Ubuntu.

install_opencv41_py35_linux.sh

# run with `sudo ./install_opencv41_py35_linux.sh`
OPENCV_VERSION=4.1.0

apt-get install -y build-essential 
apt-get install -y cmake 
apt-get install -y wget 
apt-get install -y git 
apt-get install -y unzip 
apt-get install -y yasm 
apt-get install -y pkg-config 
apt-get install -y libjpeg-dev 
apt-get install -y libtiff-dev 
apt-get install -y libpng-dev 
apt-get install -y libavcodec-dev 
apt-get install -y libavformat-dev 
apt-get install -y libswscale-dev 
apt-get install -y libv4l-dev 
apt-get install -y libatlas-base-dev 
apt-get install -y gfortran 
apt-get install -y libtbb2 
apt-get install -y libtbb-dev 
apt-get install -y libpq-dev 
apt-get install -y libgtk2.0-dev 
apt-get install -y libpython3-dev

python3 -m pip install numpy

cd /
wget https://github.com/opencv/opencv/archive/${OPENCV_VERSION}.zip
unzip /${OPENCV_VERSION}.zip
wget https://github.com/opencv/opencv_contrib/archive/${OPENCV_VERSION}.zip -O ${OPENCV_VERSION}-contrib.zip
unzip /${OPENCV_VERSION}-contrib.zip
mkdir /opencv-${OPENCV_VERSION}/cmake_binary
cd /opencv-${OPENCV_VERSION}/cmake_binary \
&& cmake -DBUILD_TIFF=ON \
  -DBUILD_opencv_java=OFF \
  -DWITH_CUDA=OFF \
  -DENABLE_AVX=ON \
  -DWITH_OPENGL=ON \
  -DWITH_OPENCL=ON \
  -DWITH_IPP=ON \
  -DWITH_TBB=ON \
  -DWITH_EIGEN=ON \
  -DWITH_V4L=ON \
  -DBUILD_TESTS=OFF \
  -DBUILD_PERF_TESTS=OFF \
  -DCMAKE_BUILD_TYPE=RELEASE \
  -DCMAKE_INSTALL_PREFIX=$(python3.5 -c "import sys; print(sys.prefix)") \
  -DPYTHON_EXECUTABLE=$(which python3.5) \
  -DPYTHON_INCLUDE_DIR=$(python3.5 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
  -DPYTHON_PACKAGES_PATH=$(python3.5 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
  -DBUILD_EXAMPLES=ON \
  -DOPENCV_EXTRA_MODULES_PATH=/opencv_contrib-${OPENCV_VERSION}/modules \
  .. \
&& make -j$(nproc) install

rm /${OPENCV_VERSION}.zip
rm /{OPENCV_VERSION}-contrib.zip
mkdir /usr/local/lib/python3.5/site-packages/
ln -s \
/usr/lib/python3.5/dist-packages/cv2/python-3.5/cv2.cpython-35m-x86_64-linux-gnu.so \
/usr/local/lib/python3.5/site-packages/cv2.so