RE: [photo-3d] stereoview without viewer or glasses?

["Stuart Stiles" <sstiles@xxxxxxxxxxxxx>]

-----Original Message-----
From: Bob Shotsberger [mailto:bshots1@xxxxxxxxxxxxxx]
Sent: Friday, January 12, 2001 12:03 AM
To: photo-3d@xxxxxxxxxxx
Subject: Re: [photo-3d] stereoview without viewer or glasses?


After the Rochester NSA Connvention a few years ago there
was tour of the Eastman House Museum, and on special
display for the NSA groups was a prototype stereo slide
viewer...

The convention speaker that year was "Mr Stereo" for Kodak,
but I do not recall his real name and in his very interesting speech
he described it and how it worked
        ----------
The speaker at NSA'96 in Rochester was William Ewald. He did give a very
interesting and lively talk largely based upon his 38 years of work at
Kodak.

According to program notes,

" In the field of stereo, he designed several projectors.  One of these
could obtain the troublesome horizontal and vertical registration almost
instantaneously and with no eye discomfort for the audience.  Another of his
stereo systems fits a standard Carousel Projector but requires a special
camera.  He also received a patent for a stereo table viewer requiring no
polarized glasses."

Perhaps the table viewer is what you saw.

Bill was also a consultant on Kodak's digitized lenticular stereo system
following his 1980 retirement.

The Kodak lenticular display at the trade fair was really the best that I
have ever seen for showing motion 3D.  I believe that the lents utilized
some seventy two layers. The whole of stereo imaging was new to me at that,
my first involvement in the NSA, so I am not sure.  I did, however pick up
the business card from John P. Greve, General Manager Dynamic Imaging, of
Eastman Kodak Company, Rochester, NY.  Perhaps he is still working there,
should anyone want to check out details of that "non-glasses" viewing
process.

Another system that I tried out at NSA'96 did not require lenses, but I had
to wear the frame of a pair of glasses so that the computer could trace my
location in front of the monitor.  When I took the frame off, the 3D effect
was lost.  Sorry, I did not get any details from the exhibitors at that
time. I don't think that they were ready to go into production. Their
presentation seemed to be more a "trial balloon" than a sales pitch.

Stuart