Getting to Know ARKit
Wallace Wang · Apress eBooks · 2018
Augmented reality works by tracking the real world through a camera. By identifying solid objects in the real world such as floors, tables, and walls, augmented reality can then accurately place virtual objects on the scene that create the illusion of actually being there. Even if the virtual object is nothing more than a cartoon Pokémon character, augmented reality must overlay that virtual object so the virtual object doesn’t get cut in half by furniture, walls, or tables.