wraggster
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
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