*Webcam* tracking Coding Challenge

In this challenge, if you choose to accept it:

You must create a processing sketch with realtime webcam tracking using
only landmarks in the image.

You should be able to get the position and the rotation of the webcam.

It should work with a standard monocular webcam.

This is more of a challenge in getting this sort of thing running in processing.
I don't expect you to write your own fully fledged SLAM implementation, but it would be
awesome if you did, of course!

That said, maybe the second part to this challenge could be to make it production ready.
AKA, using only code that is commercially licensable, and more importantly, making
it work outside also, and having it ignore moving objects such as people and cars.

I think you can do this. Give it a shot! :)