Returns the scalar distance between two points

Shows an image until any key is pressed

Handles centering for a given length that may be odd or even.

Dynamically converts an image to colour if the input colour is a tuple and the image is grayscale.

Cuts a rectangle from an image using the top left and bottom right points.

Uses a blurring function, adaptive thresholding and dilation to expose the main features of an image.

Crops and warps a rectangular section from an image into a square of similar size.

Extracts a digit (if one exists) from a Sudoku square.

Finds the 4 extreme corners of the largest contour in the image.

Uses the fact the `floodFill` function returns a bounding box of the area it filled to find the biggest connected pixel structure in the image. Fil

Extracts digits from their cells and builds an array

Infers 81 cell grid from a square image.

Scales and centres an image onto a new background square.

Shows list of 81 extracted digits in a grid format

Displays contours on the image.

Draws circular points on an image.

Displays rectangles on the image.

Plots each image in a given list as a grid structure. using Matplotlib.