From: "McDonald, David" <[EMAIL PROTECTED]>
> The TIFs have no LZW compression at all, so does this matter? I really
> don't care if I use GIF or JPG, I would simply like filesize (aka. load
> satellite images I have in TIFF 6.0 format and make thumbnails of them when
> a user requests to view one (or many). Since there are so many images, I
> would like to do it on-the-fly, so I don't have to archive the thumbs (space
> is an issue on the server). Any ideas?
What matters is the output algorithm. JPG is probably going to be slow
and also may not be a very good match for thumbnails. GIF without LZW is
definiately NOT going to be small, but may be fast. PNG and several other
formats may not be viewable in-line in the HTML.
There's an application called ImageMagick which seems to be pretty popular
with those doing image conversion. Take a look at http://www.ImageMagick.org/
for more details.
I don't know that anyone has written a CFX for Imagemagick, but you can
probably use it as a CGI or do a system call to it to do your on the fly
conversions.
--
--
Never apply a Star Trek solution to a Babylon 5 problem.
Larry W. Virden <mailto:[EMAIL PROTECTED]> <URL: http://www.purl.org/NET/lvirden/>
Unless explicitly stated to the contrary, nothing in this posting should
be construed as representing my employer's opinions.
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