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Date: Fri, 14 Apr 2006 19:44:12 +0200
From: Antoine <melser.anton@gmail.com>
To: "Bob Friesenhahn" <bfriesen@simple.dallas.tx.us>
Subject: Re: [Tiff] BigTIFF Suggestion
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Cc: TIFF <tiff@lists.maptools.org>, Gerben Vos <Gerben@zylab.com>
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Status:   

This is probably a stupid comment...
I thought you could create your own tags with tiff? I would be shocked
to find that that wasn't the case with bigTiff (having strictly 0
knowledge of the aforementioned...)... so why not create your own tag
and be done with it? There are heaps of punters out there that do that
and an app that ALWAYS wrote filename + size + ??? would surely give
you something to work with.
Then again I know nothing about bigTiff...
Cheers
Antoine
ps. the tag may not be "standard", but that doesn't stop anyone from
optimising their app... after all - what about wang annotations?

On 06/04/06, Bob Friesenhahn <bfriesen@simple.dallas.tx.us> wrote:
> On Thu, 6 Apr 2006, Gerben Vos wrote:
>
> > Bob Friesenhahn wrote:
> >
> >> ImageMagick's MIFF format (extension via pure concatenation)
> >
> > Sorry, I'm too lazy at the moment to go and read the ImageMagick source,
> > but in the light of Joris' recent comments, I wonder how you handle
> > that reliably, if it's really pure TIFF concatenation. I mean, there's
> > nothing in a TIFF that tells you the size of the file, so the only
> > way would be to either scan for the TIFF signature (dangerous),
> > or to determine the "last" offset that isn't referred to anywhere
> > (complicated, and with the image deletion problem Joris sketched).
>
> ImageMagick's MIFF has nothing to do with TIFF.  MIFF is a rather
> simple format in which a sequence is comprised of the same stuff which
> forms a stand-alone image, but concatenated together.
>
> Bob
> ======================================
> Bob Friesenhahn
> bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
> _______________________________________________
> Tiff mailing list: Tiff@lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/tiff
> http://www.remotesensing.org/libtiff/
>


--
This is where I should put some witty comment.

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