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From: schroder@bbn.com (Ken Schroder)
Newsgroups: comp.graphics
Subject: How to filter out jitter on touch screen input?
Message-ID: <64538@bbn.BBN.COM>
Date: 6 Jun 91 15:08:58 GMT
Sender: news@bbn.com
Reply-To: schroder@BBN.COM (Ken Schroder)
Distribution: usa
Organization: Bolt Beranek and Newman Inc., Cambridge MA
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cc: schroder


I'm writing a driver for accepting touch screen input.  The problem is
that I see lots of jitter, probably because people's fingers wobble...
then again, maybe it's the touchscreen.  I also see occational stray
points.

Does anyone know of a good filter algorithm that would filter out the
wobbling but still generate a correct series of points for finger painting?

Thank You,
Ken