Dieter wrote:
Where is the extra information stored? You can't magically store
two images in a single framebuffer without losing something.
Exactly. You can store two images in a single framebuffer using
red-blue encoding, for example, but then you lose color information.
For the iZ3D you have to lose either intensity/luminance or color
information.
IIRC, you could use the front screen as a L/R shutter, and lose half
the frame rate (60 Hz refresh becomes 30 Hz). Flicker?
My head aches just thinking about it :-) Yeah, shutter glass
stereo is quite difficult to do these days because 'modern'
LCDs (and LCD/DLP projectors) can't do the 96 to 120 Hz that
the old CRTs could.
Or you could
interlace the screen and use one field for L and the other for R and
lose half the resolution. Gaps between pixels?
This is what I suggest will probably be the easiest way to
use the iZ3D. You lose half the horizontal resolution, so
effectively you're looking at a 840 x 1050 display, which
isn't too bad. Might look grainy/low res, but you wouldn't
be aware of actual gaps.
Is there an advantage other than using polarized glasses instead of
shutter glasses? I suspect that the special double LCD required
will cost a lot more than the shutter glasses.
Polarized glasses are lighter and more comfortable to wear,
cheaper, and the batteries never go flat during your demo.
While the iZ3D is rather expensive for an LCD monitor
(quoted at $1,000 US on the web site), the only 120 Hz LCD
displays or projectors I've ever seen cost several thousand
dollars each with lower resolution :-( And setting up a
more conventional dual head polarised stereo rig means
buying two high res projectors, aligning them in a special
mounting block, and buying a special projection screen.
Also costs several thousand dollars :-(
So the iZ3D is a pretty good deal. I just don't think it
will work well enough for people who care about stereo.
--
Hugh Fisher
DCS, ANU
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