[photo-3d] Re: Home made Lenticular print software

[Monte Ramstad <mramstad@xxxxxxxxxx>]

I don't have any experience with the software you mention, but I
can share a few thoughts.

If your printer has just enough resolution to print a two image
lenticular
image, then you could produce a lenticular print of a stereo pair.  The
problem is that the spacing of your eyes typically won't be wide
enough to be able to view the centers of the left and right vertical
strips
simultaneously.  Therefore if you try to position your head to view the
stereo pair, you will see a lot of the opposite image in each of the
views.

In order to cleanly separate the two views, your printer should be
capable
of printing many more views (possibly as many as 10) even if you only
decide to use two views.

There is a way around this problem.  If you use a plexiglass spacer
between the print and the lenticular screen (for example 0.1 inches),
you can increase the parallax so that you can view the centers of the
left and right strips simultaneously.  The problem with this is that the

lenticular screen has to have a focal length which is equal to the
spacing
to the print.  As far as I am aware most lenticular screens have focal
lengths close to the thickness of the lens sheet.

My first stereo project  (before the software, before the viewer, before

the beamsplitter) was to produce a lenticular sheet for exactly this
purpose.  I calendered yards and yards of plastic sheeting from a
homemade calender to get small samples of useable pieces.  That
project is now on hold.

In the meantime, I have written software which can, among many other
things, combine two images into a lenticular format.  Extending this to
any number of images would not be too difficult for me to do given the
structure of my program.  However, I'm still waiting for someone to
indicate that it would be useful to them.  (In other words, I'm still
waiting
to find some long focal length lenticular sheeting.)

>From what I understand, the difficulty with lenticular printing is not
in
the software, but in the printing hardware and quality of the lens
material
and of course finding a good instruction manual.

Dr. Monte Ramstad
www.pokescope.com

Gerrard wrote:

> Although it says it is for animating upto 10 images I was wondering
> if it could be used to produce 3D lenticulars?
>


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