# Is it possible to extract a 3D Cad model from pictures like 123D?

Autodesk has software able to create a 3D Cad model using a bunch of pictures, the point is that you send them the pictures and their software gets the cad model, I would like to understand what kind of mathematical operations are "behind the scenes".

Is it possible to use Open Cv to extract a Cad model from pictures?

I assume it is difficult any guidelines about where to start books, tutorials... would be very interesting, anything useful to get 3d information from pictures is interesting for me.

I have a science background with a bachelor on physics but I don´t know too much about this specific topic, what I mean is that I think I would be able to understand a technical paper talking about linear operators, matrix, geometric transformations and so on.

Thank you for your attention!