OpenCV for C++ and Python with contrib modules

install_opencv_with_contrib.sh

# Date: 20 Sept 2021
# Script for installing opencv for c++ and python with contrib modules 
# Tested on Pop!_OS 20.04

echo "Installing Pre-requisites"
sudo apt install build-essential cmake git pkg-config libgtk-3-dev \
    libavcodec-dev libavformat-dev libswscale-dev libv4l-dev \
    libxvidcore-dev libx264-dev libjpeg-dev libpng-dev libtiff-dev \
    gfortran openexr libatlas-base-dev python3-dev python3-numpy \
    libtbb2 libtbb-dev libdc1394-22-dev libopenexr-dev \
    libgstreamer-plugins-base1.0-dev libgstreamer1.0-dev
    
mkdir ~/opencv_build && cd ~/opencv_build

echo "Downloading Opencv"
git clone https://github.com/opencv/opencv.git
git clone https://github.com/opencv/opencv_contrib.git
cd ~/opencv_build/opencv
mkdir -p build && cd build


echo "Generating configuration"
cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/usr/local \
    -D INSTALL_C_EXAMPLES=ON \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D OPENCV_GENERATE_PKGCONFIG=ON \
    -D OPENCV_EXTRA_MODULES_PATH=~/opencv_build/opencv_contrib/modules \
    -D BUILD_EXAMPLES=ON ..
    
echo "Installing OpenCV"
make -j$(nproc)
sudo make install

echo "Testing Installation"
pkg-config --modversion opencv4