This is a very detailed 3D scan, and the topology consists of | Blender Tricks

This is a very detailed 3D scan, and the topology consists of many tiny triangles. This is not convenient if we want to UV unwrap the mesh, or rig it for animation. Ideally, we'd have a very low poly base mesh with a Multires modifier that contains all the higher levels of subdivision. But how do you recreate those from a 3D scan? This video explains.