We've been using Infitec for a couple of years in our dual single-chip DLP projector VR workbench. The two filters were built-in in the two projectors (projection-design). In our experience, Infitec provides a better seperated and more stable image than active stereo or polarized stereo. You do need some color correction (and calibration) to compensate for the greenish/purplish views of the eyes. Simple color correction (e.g. in the projector color-matrix itself) is not as good as provided by the Infitec color-correction box. Also, the more recent Infitec systems (I guess this includes the stuff Dolby licenced) have better quality filters. In our case I thought the smaller glasses were cheap ~50 Eur but the bigger wide view glasses expensive ~400 Eur.
http://visualisation.tudelft.nl/~michal/vr_lab/vrOpening/vrlOP974.jpg BTW. the dolby 3D wheel is inserted _inside_ the big cinema projector. I think syncing is not that much of a problem (similar to a DLP color wheel) provided you have access to the DLP sync. Dolby provides a box for this. The VR group of Bernd Frohlich in Weimar has experience with making your own mechanical filter/shutter-wheels (see publication http://www.uni-weimar.de/cms/fileadmin/medien/vr/documents/publications/IEEE-VR2005-multiviewer.pdf) Gerwin On Tue, Jul 21, 2009 at 11:27 AM, Paul Melis <[email protected]> wrote: > Garry Keltie wrote: > >> Hi, >> >> Last weekend I had the pleasure of seeing Ice Age 3 in 3D. I highly >> recommend it not only for the animated hoot but the stereo effect is >> definitely the most comfortable I have seen in a cinema. >> >> I'm wondering if anyone knows much about the method? Has quite a few >> pluses to it. It's pretty much done with wheels and filters in the cinema >> but it strikes me that unless its protected with patents, might be an >> attractive method, with a bit of work, for commodity (non quad buffering) >> graphics. >> > BTW, in case you don't want to use quad-buffering you would still need to > synchronize your image generation with the filter wheel. I suspect that > might not even be that easy to accomplish. It would be easier (but not > cheaper) to go for a quad-buffer setup with two projectors. Or, you could > use a dual-output gfx card and set up your application to render over both > outputs (xinerama style), using one eye per output. > > Paul > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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