The pre-requisite for the project would be.
Python version 3.6.6 numpy 1.19.5 opencv-python 4.5.3.56 pip 10.0.1
I find this useful series of OpenCV learning from Youtube channel: https://www.youtube.com/playlist?list=PLGs0VKk2DiYyXlbJVaE8y1qr24YldYNDm