How does a phone know where to put a virtual object? ARKit and ARCore use computer vision to find features in the world through the phone’s camera. Those features become 3D points; linked points can form a detected surface, such as a floor, table, or wall. section 15.2
Once a surface is found, an augmented-reality app can place a 3D object or scene on it. The libraries handle the hard part of attempting to “see” the world; this is an application of computer vision, not a guide to implementing it. section 15.2
