Tutorials — Anthology —
How to detect an object from static image and crop it from the
OpenCV for detecting Edges, lines and shapes
Given a contour outlining the edges of an 'S' shape in OpenCV
Machine Learning, Artificial Intelligence, Image and Video Editing
OpenCV: Contour Features
Line detection in python with OpenCV
OpenCV Python - Image Contours
Finding extreme points in contours with OpenCV - PyImageSearch