Learn to Program with Kotlin: From the Basics to Projects with Text and Image Processing

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2021

T. LaversLearn to Program with Kotlinhttps://doi.org/10.1007/978-1-4842-6815-5_19

19. Finding Digits

Tim Lavers¹  

(1)

Woonona, NSW, Australia

 

In this chapter, we will write a class that, given a Picture containing a speed sign, will extract a List of Pictures representing the individual digits in the sign. To get started, open https://github.com/Apress/learn-to-program-w-kotlin-ch19.git.

19.1 DigitFinder

In addition to Picture, the project contains a class called DigitFinder:

 1   package lpk.imaging

 2

 3   import java.awt.Color

 4

 5   class DigitFinder(val input : Picture) {

 6       fun digits() : List<Picture> {

 7           val result = mutableListOf<Picture>() ...