Hey, Jitter fans: jit.artkmulti is an external for Max/MSP and Jitter that brings the powerful, marker-based augmented reality capabilities of ARToolKit to Max. We’ve seen a lapse in interest in marker-based tracking, I think, with the advent of technologies like Kinect, but it’s still useful for certain applications – and this makes it really easy to play around with if you’re a Jitter maven.

This appears to be early in development – see the caveats in “known issues”:

Hard coded for 640 x 480 : other dims don’t work, changing dims causes crash.
Only one jit.artkmulti object at a time, multiple objects causes output to cease.
Only 4 markers supported at this time.

But, on the other hand, this could already be just the tool you need to bring something different to a project or performance. And provided you own Jitter, it’s free. If you do create something with the tool, send us the results!

http://www.aranarproductions.com/artk/

Open source code available at GitHub, if you want to contribute (or even do something crazy like port to Pd/GEM).