title: Online Smoothing for Hand Tracking Data using Kalman Filters
body: <p>I'm using Kinect with OpenNI/NITE. OpenNI can track human hands with the assistance of NITE. Also, OpenNI can smooth the tracked hand line, and I was trying to figure out how it does that.</p>
  
  <p>I tried using Kalman filters, replaced the old hand position with the kalman estimated hand position, but still the smoother in OpenNI is much better.</p>
  
  <p>I'd appreciate any clues on how to smooth online data or how to set the parameters in a Kalman filter (something specific to hand tracking, since I already know what the parameters do).</p>