apt-get install build-essential cmake pkg-config
apt-get install libjpeg-dev libtiff-dev

apt-get  install libjasper-dev libpng12-dev   (Not Found)

apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
apt-get install libxvidcore-dev libx264-dev
apt-get install libgtk2.0-dev libgtk-3-dev
apt-get install libatlas-base-dev gfortran

apt-get install python3-dev
apt-get install python3-pip


wget -O opencv.zip https://github.com/opencv/opencv/archive/4.0.0.zip
wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.0.0.zip
unzip opencv.zip
unzip opencv_contrib.zip
mv opencv_contrib-4.0.0  opencv_contrib
mv opencv-4.0.0  opencv

sudo pip3 install numpy scipy

cd ~/opencv/
mkdir build
cd build

cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/usr/local \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \
    -D ENABLE_NEON=ON \
    -D ENABLE_VFPV3=ON \
    -D WITH_FFMPEG=ON \
    -D WITH_GSTREAMER=ON \
    -D OPENCV_ENABLE_NONFREE=ON \
    -D BUILD_EXAMPLES=ON ..

make -j4

sudo make install
sudo ldconfig
sudo apt-get update


python
import cv2