Instruction to install OpenCV on Ubuntu 16.04 | NeuronBot

NeuronBot_Install_OpenCV_Ubuntu16.04.sh

# Summary: We will create a virtual environment of Python-3.9 and install OpenCV-Python to it.

# 1. Add 3rd-party OpenCV-3.9 repository
sudo apt-key adv --refresh-keys --keyserver keyserver.ubuntu.com
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update

# 2. Install packages
sudo apt-get install -y software-properties-common python3-pip python3.9 python3.9-dev python3.9-venv

# 3. Create virtual environment
cd ~
python3.9 -m venv venv
source ~/venv/bin/activate
pip install --upgrade pip==21.3.1
easy_install cpython

# 4. Build and install numpy from source
cd ~
git clone -b v1.22.4 https://github.com/numpy/numpy
cd ~/numpy
git submodule update --init
python3.9 setup.py install

# 5. Install OpenCV-Python to virtual environment
source ~/venv/bin/activate
cd ~
pip install opencv-python==3.4.18.65

# 6. Test OpenCV-Python
source ~/venv/bin/activate
python
import cv2