Re: PHOTO-3D digest 1457

[P3D Alexander Klein <klein@xxxxxxxxxxxxxxxxx>]

P3D  <spacecap@xxxxxxxxxxxxx> writes:

> "I found a URL on the web which details how to go about using a
> Lenticular
> screen with computer generated images. It requires a very high
> resolution
> printing device but with experimentation you may be able to get it to
> work." 
> 
> PHSColorgrams will not sell you the actual program to produce on your
> own at home 3D images. They will produce the image for you at an
> outlandish price if you submit the art work to them.
> 
> Why does everyone keep this info under lock and key?

Don't mix up lenticular pictures and PHSColograms! The latter are
barrier strip stereograms, which _might_ be easier to make in a
home lab (sorry, I've only a tiny black & white lab, and not very
much experience).

I'm sure there are some wizards out there which could do it. This
is the basic scheme how barrier strip stereograms work:


    ----    ----    ----    ----
 
  aaaabbbbaaaabbbbaaaabbbbaaaabbbb

"aaaa" and "bbbb" are vertical strips (undistorted) of left eye or
right eye views, respectively. There is some space between the image
(i.e. made of transparency film, back-lit), and the actual barrier-
strip (----    ----), which is made also on film, with small vertical
lines on it (could be easily done with a computer and output on a
(Linotype) imagesetter).

Did anybody of you do any succesful experiments? I'd love to hear
from them. If the basics are clear, a computer whiz-kid (no, not me,
I'm none!) could write some software to take scanned-in stereo pairs
and "cut" and interleave the vertical strips.

alex


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