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Date: Tue, 23 Nov 2004 14:01:41 +0100
Subject: Re: [Tiff] GPS and EXIF
From: Eric VERGNAUD <eric.vergnaud@jlynx.com>
To: Joris <joris.at.lebbeke@skynet.be>
Message-ID: <BDC8F345.2BBC1%eric.vergnaud@jlynx.com>
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le 23/11/04 13:04, Joris =E0 joris.at.lebbeke@skynet.be a =E9crit=A0:

> Guys,
>=20
> I'm trying to find my way through the EXIF specs, trying to add the tags =
in a
> new 'Private IFD tags' section of the Tag directory
> (http://www.awaresystems.be/imaging/tiff/tifftags.html).
>=20
> What remains unclear is the highest level of understanding on GPS. I see =
the
> specified tags, and I see they are clearly related to positioning and
> satellites
> and stuff. GPS is then probably the abreviation of 'General Positioning
> System',
> I assume. What remains unclear is what kind of application makes use of t=
his.
> What application or devices write GPS IFDs in a TIFF? Why, what is the
> purpose?
> What is the relation to EXIF, that seems clearly to be all about digital
> camera
> still images, while GPS includes such stuff as the movement speed and
> direction?
> The nature of the GPS tags make me wonder whether there is any relation
> between
> GPS and GeoTIFF. Is there?
>=20
>=20
> Joris Van Damme
> info@awaresystems.be
> http://www.awaresystems.be
> Download your free TIFF tag viewer for windows here:
> http://www.awaresystems.be/imaging/tiff/astifftagviewer.html
>=20
> _______________________________________________
> Tiff mailing list
> Tiff@remotesensing.org
> http://xserve.flids.com/mailman/listinfo/tiff

Some cameras include a gps. If you take a picture while moving, all this
information can be very important, notably in the military area.

-------------------------------
Eric VERGNAUD - JLynx Software
Cutting-edge technologies and
services for software companies
web: http://www.jlynx.com
-------------------------------


