Kinect's AI Breakthrough Explained

mikejuk writes "Microsoft Research has just published a scientific paper (PDF) and a video showing how the Kinect body tracking algorithm works — it's almost as impressive as some of the uses the Kinect has been put to. This article summarizes how Kinect does it. Quoting: '... What the team did next was to train a type of classifier called a decision forest, i.e. a collection of decision trees. Each tree was trained on a set of features on depth images that were pre-labeled with the target body parts. That is, the decision trees were modified until they gave the correct classification for a particular body part across the test set of images. Training just three trees using 1 million test images took about a day using a 1000-core cluster.'"

Comments

Very impressive

[artor3]

A lot of the MS-haters on Slashdot tried to write off the Kinect as a nice bit of third-party hardware with a crappy MS-made driver. I wonder how they'll respond to this. Microsoft has really outdone themselves here. I think Penny Arcade put it best. If only they could apply this sort of innovation to their more important products, they'd be back on top in no time.