View Full Version : Kinect's AI Breakthrough Explained

March 26th, 2011, 22:36
"Microsoft Research has just published a scientific paper (http://research.microsoft.com/pubs/145347/BodyPartRecognition.pdf) (PDF) and
http://www.youtube.com/watch?v=HNkbG3KsY84 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 (http://www.i-programmer.info/news/105-artificial-intelligence/2176-kinects-ai-breakthrough-explained.html). 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.http://games.slashdot.org/story/11/03/26/2014234/Kinects-AI-Breakthrough-Explained