Re: Anaglpyhs on the web

[P3D Ted Papoulas <ted@xxxxxxxxxx>]

>I agree with you re: the ghosting. The cyan does not work properly. It seems
>okay if the bifringement is kept very thin but otherwise becomes very
>visible. Not certain why this is. I think it is because of the conversion to
>JPEG or GIF format from an original TIFF source. Their is a shift slightly in
>the colour transition and this shade of blue seems to be sensitive to subtle
>shade change.

Since I have some experience in creating 3-D anaglyphs on the computer and
with putting them up on the web, I thought I'd add my 2 cents.

There shouldn't be a significant loss when changing formats, but there are
some things to remember. The original graphic files for 3-D anaglyphs
should be created in "RGB" mode, not "CMYK". The quality of the JPEG should
be set to "highest". This will be a larger file, but obviously better to
view. You can lessen the quality, but a 3-D image that doesn't fuse well or
has too much ghosting isn't worth viewing at all. If you convert to a GIF
file, it's best to use a custom or "adaptive" palette which will preserve
the colors as accurately as possible. This may sometimes cause trouble for
people viewing at 256 colors, but often it doesn't even then and at
"thousands" or more it looks great. It's possible to use a system palette
(I recently did a job where we had to do that) and it looks OK, but not
great.

Summing up, the file format isn't as important as the monitors color depth
and the image itself. In the next week I'll post the URL of a new 3-D site
I'm creating for ABC Television. I'll be interested in receiving any
comments from this group.

Ted Papoulas

tedp@xxxxxxxxxx
Phone: (212) 966-5500
Fax: (212)  966-5589

Tumble Interactive Media, Inc.
53 Leonard Street
New York, NY  10013
http://www.tumble.com



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