CCL: Stereo display

 Sent to CCL by: "Purisima, Enrico" [Enrico.Purisima(a)cnrc-nrc.gc.ca]
 One thing to watch out for if you're using two projectors is that the
 projectors need to be DLP and not LCD. The light coming out of LCD
 projectors is polarized (differently for each primary RGB color) and
 will cause weird color shifts when used with polarized glasses.
 Enrico
 Biotechnology Research Institute
 National Research Council of Canada
 (514) 496-6343
 Enrico.Purisima.:.nrc.ca
 -----Original Message-----
 > From: owner-chemistry.:.ccl.net [mailto:owner-chemistry.:.ccl.net]
 Sent: Tuesday, January 31, 2006 7:47 AM
 To: Purisima, Enrico O.
 Subject: CCL: Stereo display
 Sent to CCL by: Brent Krueger [kruegerb,hope.edu]
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 This works just fine in Windows as well.  Trivial really, once you
 have some decent way to mount the projectors.
 I would add that it is my understanding that refresh rates have
 improved so much on LCD displays that they are right on the verge of
 being suitable for crystal-eyes type sequential stereo.  So, don't
 despair about the demise of CRTs, patience may yield a familiar
 solution.
 Cheers,
 Brent
 On Jan 30, 2006, at 8:42 PM, Warren DeLano warren:delsci.com wrote:
 > Sent to CCL by: "Warren DeLano" [warren(0)delsci.com]
 > Peter,
 >
 >> The only bit missing is the necessary software to drive the display
 >> cards; maybe that has been solved already?
 >
 > On Linux at least, dual-headed nVidia Quadro cards support a special
 > stereo clone mode for precisely this situation.  It is 100% compatible
 > with existing stereo 3D software using the OpenGL quadbuffer API,
 > and so
 > one digital projector simply gets the left image while the other gets
 > the right.  Both projectors display the non-stereo content, so the
 > effect is exactly like using shutter glasses on a CRT with
 > stereo-3D-in-a-window.
 >
 > I don't know if that same capability is available yet on Windows or
 > Mac,
 > but it is a great solution for building inexpensive "geowalls"
 with
 > full
 > stereo 3D software compatiblity.
 >
 > Cheers,
 > Warren
 >
 > --
 > Warren L. DeLano, Ph.D.
 > Principal Scientist
 >
 > . DeLano Scientific LLC
 > . 400 Oyster Point Blvd., Suite 213
 > . South San Francisco, CA 94080 USA
 > . Biz:(650)-872-0942  Tech:(650)-872-0834
 > . Fax:(650)-872-0273  Cell:(650)-346-1154
 > . mailto:warren|a|delsci.com
 >
 >
 >> -----Original Message-----
 >> From: owner-chemistry|a|ccl.net [mailto:owner-chemistry|a|ccl.net]
 >> Sent: Monday, January 30, 2006 3:41 PM
 >> To: Warren DeLano
 >> Subject: CCL: Stereo display
 >>
 >> Sent to CCL by: "Dr. Peter Bladon" [cbas25]_[strath.ac.uk]
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 >>
 >> Dear Modellers,  (Sorry 2 l's)
 >>
 >> There is a solution to the problems of the demise of CRT displays.
 >>
 >> This involves the use of a pair of LCD projectors.  I have been
 >> thinking about this for some time, but only this week the mail-order
 >> distributor CPC in Preston, England has advertised a DLP projector
 >> for 499.50 GB pounds (roughly $750 US). What makes these interesting
 >> is the claim that they support SXGA (1280x1024) resolution. Two of
 >> these fitted with polarisers on the front of the lenses, connected to
 >> two display ports on a suitably programmed computer, focussed and
 >> superimposed on a (silver not beaded) screen, and viewed
 >> through inexpensive polarising spectacles would give the
 >> equivalent of what has traditionally been used to view stereo
 >> (photo) slides.
 >>
 >> The only bit missing is the necessary software to drive the display
 >> cards; maybe that has been solved already?
 >>
 >> The advantage of this approach is that it allows for viewing by
 >> groups of people without the expense of shutter spectacles.
 >>
 >> Peter Bladon
 >> Interprobe Chemical Services
 >> Gallowhill House,  Larch Avenue
 >> Lenzie,   Kirkintilloch
 >> Glasgow  G66 4HX
 >> Scotland
 >>
 >> Phone:   +44-(0)141-578-1109
 >> Fax:     +44-(0)141-776-7712
 >> URL:     http://www.interprobe.co.uk/inter/interprobe.html