P3D Re: laptop

[Bob Wier <wier@xxxxxxxxxxxxxxxxx>]

> 
>The number one mistake people make in presenting anaglyphs is
>not setting the overlap of the left and right images correctly.
>Another factor is avoid the temptation for color if the color
>palette doesn't lend itself well to the particular image.
>
>Of course there are those for who, no matter how well they are done, 
>will still not like anaglyphs. But for others, if they are done
>correctly, I think the negative sentiments would disappear.
>

I might just jump in here and say that a few years ago I did something
along the lines of what Hayden ("the 3D bear" if I remember correctly :-)
is asking, except that I used an overhead projector panel. Also, the task
was somewhat simplified since my subject material was antique views (ie,
black and white) so I didn't have to worry about preserving color fidelity
with the original source material. I ordered 50 pair of red/blue glasses
from reel3d for use in a fairly large classroom setting.

By using photoshop, I could adjust the overlap and also the color balance
(red/cyan). I found it particularly important to make the red/cyan adjustments
with the actual equipment which was going to be used (in terms of projection)
so that I wouln't have any nasty surprises. Doing it that way, I could adjust
the color for maximum opposite eye cancellation. I found I could get really
good extinction on one color, but never could get it on the other, no matter
what I did. Apparently the color spectrum of the projector tube was just too
broad for the transmission characteristic of the glasses (or vice versa). 
I *think* I could get it pretty good for the Cyan, but not so hot for the 
Red - but that might be backward. Since I no longer have access to a color
projector, I've not done anything along those lines recently.

THANKS!

--Bob Wier



--- Bob Wier

  --- wier@xxxxxxxxxxxxxxxxx ---
     Rocky Mountain College
         Billings, MT
( currently in Ouray, Colorado)


------------------------------