Its really the latest incarnation in the field of Photogrammetry https://en.wikipedia.org/wiki/Photogrammetry https://en.wikipedia.org/wiki/Photogrammetry - aka

Its really the latest incarnation in the field of Photogrammetry https://en.wikipedia.org/wiki/Photogrammetry https://en.wikipedia.org/wiki/Photogrammetry - aka, converting 2D images / video to 3D data. Imagine one of those house tours on Zoopla on steroids, or street view but smoother.