This 3D scanning software took me a long time to find out....
I just bumped into this Autocad 123D Catch app which impressed the hell out of me.
The object you see is a project I made a few years back using Polymorph plactic (thats how you made 3D plastic stuff then)
The Scan process is simple >>> take as many photos from as many different angles (order can be very random) the pictures are then uploaded to the Autodesk server and processed.... sending back an OBJ (+mtl file) file for use in Blender (or even Autodesk).
This is just the "Raw" low resolution model sitting in blender , there are some artifacts which can be easily stitched. You can also select Medium or Hires downloads of your model.
Low res :-
quite a few artifacts and the mouth is filled in!!
Highest res :-
Practically no artifacts and mouth recess perfect ...Win!!
Sooo... how can we apply this to practical things & Robotic buiding :-
One of the biggest tasks creating robot object parts is to get the basic outlines model, which can be quickly scanned from existing objects. ie say you want to make a foot brace ( after spained ankle ) , simply take 20-70 pictures of your foot at all angles and hey presto 1-3 hours later a Plastic cast comes off the 3D Production line..