Technical requirements
This chapter uses Python, OpenCV, and NumPy. Please refer back to Chapter 1, Setting Up OpenCV, for installation instructions.
The completed code and sample videos for this chapter can be found in this book's GitHub repository, https://github.com/PacktPublishing/Learning-OpenCV-5-Computer-Vision-with-Python-Fourth-Edition, in the chapter09
folder.
This chapter's code contains excerpts from an open source demo project called Visualizing the Invisible, by Joseph Howse (one of this book's authors). To learn more about this project, please visit its repository at https://github.com/JoeHowse/VisualizingTheInvisible/.