[AG-TECH] Re: [Westgrid-AGTech] FYI - Kodak's 3-D display sys tem

[Osland, CD (Chris)]

...snip
> ... In one of the direction we use in fact a
> side by side multiplexer to make sure the frames arrive at 
> the same time.
...snip

For an exhibition in 1997 I ran a stereo projection system using
two timecode-locked Betacam machines.  The content was all
virtual reality models of various physics experiments (current
and future - bits of CERN etc..), and the originals were frame
accurate.

We found that in those circumstances, the two sequences *appeared*
perfectly in sync if the timecode locking was dead on or +- one
frame.  It was perfectly watchable at +- 2 frames, but you could
see that something was a bit out, and that at more than 2 frames
out it was best not watched.

These were PAL frames (40 milliseconds each) of course, so 2 frames
are 80 millisecs.  NTSC frames at 33 millisecs each might just let
you get away with 3 frames (100 millisecs), but I rather doubt it.

Cheers

Chris

____________________________________________________________________
Chris Osland                                               Office tel: +44
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Digital Media and Access Grid                          Medialab tel: +44 (0)
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CLRC Rutherford Appleton Laboratory (Bldg. R18)
Chilton, DIDCOT, Oxon OX11 0QX, UK
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