4. Working with contours

Overview

This chapter will familiarize you with the concept of contours. You will learn how to detect nested contours and access specific contours with a given shape or moment distribution. You will gain the ability to play with contours. This ability will come in handy during object detection tasks, especially when you are searching and selecting your object of interest. You will also learn how to access contours according to their hierarchy. Moreover, you'll learn how to fetch contours of a particular shape from an image with multiple contours. By the end of this chapter, you will be able to detect and handle contours of different shapes and sizes.