To: dstamp@watserv1.uwaterloo.ca, galt%peruvian@cs.utah.edu
Subject: Re: simple code to get simple gestures
Cc: glove-list@karazm.math.uh.edu
Message-Id: <9110151053.AA18001@roi.ca41.csd.mot.com>
Date: 15 Oct 91 10:53:17 PDT (Tue)
From: Lance Norskog <lance@roi.ca41.csd.mot.com>
	
	Now the bad news.  This type of filter will always have overshoots
	and delays at any change of velocity of the glove.  This means that
	the image of the glove will play catch-up when motion starts, and
	will continue moving after motion ceases, then go backwars to correct
	itself.  This can be disconcerting to the user!
	
This follows the signal-processing paradigm.  An extensions
of the mouse-cursor paradigm is another possibility.

If you're willing to forgo the direct mapping concept,
prediction from the glove inputs can just "push" a 3D 
position around.  Changes in direction and speed can
be handled as special cases to avoid the overshoot/correction
effect.

Being 31 (as of this weekend) instead of 12 years old,
I don't plan to hold my hand up to the screen 
for several hours at a time anyway.
I've been testing with the sensors arranged on the
floor and letting my hand hang down.  I don't see that
I need direct mapping to use the glove in this mode,
and so the 3D-cursor-pushing scheme should work fine.

Lance Norskog