Re: Virtual I/O Head Tracker
Kent Miller (blastarr++at++smtp.ix.netcom.com)
Thu, 21 Sep 1995 19:31:27 -0700
> I have written a head tracker driver library for the Virtual
>I/O Glasses. I found that the tracker is very noisy. I do an sproc so
>that I can collect data faster than I am using it. This allows me
>to average a few samples before they are used. I have written
>a filter but I still get a lot of jitter. Has anyone else written
>a decent filter for it?
>
I wrote a damper for our Polhemus FASTRAK. It's ok, but you always have the
smooth vs. fast response problem. The more you damp, the more you feel like
your head's stuck in molasses. Try playing around with the number of samples
you average, and the cone angle of the dead spot. For the Polhemus, the best
mix is about 20 samples with a 3-degree cone.
This year's SIGGRAPH papers included one on predicting head motion - I
suppose you could spend a couple of months turning that into code (and post
it here!). That way you can have it both ways.
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on Mon Aug 10 1998 - 17:51:54 PDT