title: Kinect 3D gesture recognition based on skeleton movements - What  libraries exist?
body: <p>What gesture recognition libraries (if any) exist for the Kinect?  Right now I'm using OpenNI to record skeleton movements but am not sure how to go from that to triggering discrete actions.</p>
  
  <p>My problem might be as simple as pose detection but it could also be as complicated as time based movements (ie. detect when they are moving their hand in a circle) depending on how difficult that is.  The examples that I've seen for pose detection have been very ad-hoc - is this because a generic algorithm is difficult to do right?</p>