T3D Re: Computer graphics 3D projection methods...

["gl@xxxxxxxx" <gl@xxxxxxxxxxxxxx>]

Turns out the CRTs aren't available anymore - I might have to go for the
LCDs now.  I take your point about setup, it could be a real pain, but the
high resolution (and extremely low second-hand price I missed) would have
been interesting.  Plus the res would've lent itself nicely to HDTV etc.

If anyone's interested, I'll let you know how I get on.  If anyone else
wants to comment on the dual-projector-with-polarised-outputs approach,
anecdotes etc, please do.
--
gl

----- Original Message -----
From: "Jim Crowell" <crowell.20@xxxxxxx>
To: "Multiple recipients of list TECH-3D" <tech-3d@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, November 23, 1999 1:18 PM
Subject: T3D Re: Computer graphics 3D projection methods...


> >
> >Date: Tue, 23 Nov 1999 07:49:38 -0000
> >From: "gl@xxxxxxxx" <gl@xxxxxxxxxxxxxx>
> >To: <tech-3d@xxxxxxxxxxxxxxxxx>
> >Subject: T3D Fw: Computer graphics 3D projection methods...
>
> [snip]
>
> >
> >I've now got two options - use two second-hand LCD data projectors, or
two
> >CRT based graphics-grade projectors, polarising each of their outputs and
> >overlapping their images (although if anyone has a second-hand VREX for
sale
> >let me know).
> >
>
> CRTs tend to be brighter, but all the ones I've seen have the big
> disadvantage that the screen geometry is variable, i.e. they have
> controls for adjusting things like image size & pincushion
> distortion.  The better ones even have separate controls for each of
> the three primaries.  I would think this would make using two of them
> for stereo a real pain, as you'd have to match the geometries...
>
> -Jim C.
>
> -------------------------------------
> Jim Crowell
> Dept. of Psychology
> Cognitive/Experimental Group
> 216 Lazenby Hall
> Ohio State University
> Columbus, OH 43210
> mailto:crowell@xxxxxxxxxxxxxxxxx
> mailto:crowell.20@xxxxxxx
> mailto:crowell@xxxxxxxxxxx
> http://vis.caltech.edu/~jim/Home.html