Re: Lots of dots
Here is a link which describes a working open source tool-chain very well:
The core program is visual sfm:
I tested it using reduced resolution (as suggested in the article) and the results came out surprisingly well.
Following the article, the whole tool-chain is surprisingly simple to follow. Add a 3d-printer at the end, and you can set up your own business.
However, Note that the software requires a non-transparent surface with texture in order to work well.
A uniform white box tends to end up with only the edges being detected, and with gaps in the sides.