Kinect's AI Breakthrough Explained 97
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by
Soulskill
from the expensive-hacker-toys dept.
from the expensive-hacker-toys dept.
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.'"
Sounds like vision, all right (Score:5, Interesting)
Re:Sounds like vision, all right (Score:5, Interesting)
Re:Sounds like vision, all right (Score:5, Interesting)
Yes, now all they need to do is fix the lag which can be quite high, maybe even 200ms:
http://www.youtube.com/watch?v=weZOjotbuSU [youtube.com]
Something really low like 16ms or better is needed so that we don't notice, according to this article:
http://www.sussex.ac.uk/Users/km3/hfes.pdf [sussex.ac.uk]