As I started to read the paper, I got stuck at literally first 3 words beneath the title: "real-world geometry". Does that term mean anything? Geometry (as in m

As I started to read the paper, I got stuck at literally first 3 words beneath the title: "real-world geometry". Does that term mean anything? Geometry (as in meshes) is a map, not the territory. Does the expression real-world geometry actually imply the output of 3D scanners?