The CheckersModel module is the eyes and the brain of our project. It brings together everything except the GUI. Specifically, it depends on NumPy, OpenCV, scikit-learn, and our ColorUtils and ResizeUtils modules, as reflected in the following import statements:
import numpy import sklearn.cluster from CVBackwardCompat import cv2 import ColorUtils import ResizeUtils
Note
Although we are combining image capturing and analysis into one module, they are arguably distinct responsibilities. For this project, they share a dependency on OpenCV. However, in a future project, you might capture images from a camera that requires another library, or from an entirely different type of source, such as a network. You might even support a wide variety of capturing techniques in one project. Whenever you feel that image capture is a complex problem in its own right, consider dedicating at least one separate module to it.
To make our code more readable, we will define several constants...