[KPhotoAlbum] Importing and Exporting tags
Ashley J Gittins
agittins at purple.dropbear.id.au
Sun Jun 18 19:46:46 CEST 2006
On Monday 19 June 2006 02:21, Dotan Cohen wrote:
> On 18/06/06, Ashley J Gittins <agittins at purple.dropbear.id.au> wrote:
> > On Sunday 18 June 2006 20:35, Rui Malheiro wrote:
> > > I think it would be great to have a standard XML format so that every
> > > image browser/manager could pickup tags when displaying an image.
> > Sounds like a job for IPCT tags (since I think that's what they were
> > invented for) - does anyone know if there is a standardised method/format
> > for placing them in separate files (like a image.jpg.ipct) rather than
> > embedding the info into the image file itself? I am thinking of cases
> > where the original format (raw files) may not support iptc or where
> > people don't want their originals modified at any cost.
> No, IPTC is specific to jpg and it must be inside the photo itself.
> Other formats do support it, and XML can be created from it for
> storage outside the photo, but that is not native IPTC.
> Dotan Cohen
(bringing back on-list)
EXIF is, afaik, specific to jpeg, IPTC has traditionally been available in
jpg, tiff and psd - all done by adobe rather than the IPTC themselves though,
and as a subset of the original IIM spec.
Actually, it looks like there is a standardised way of storing IPTC headers in
standalone XML - strictly speaking I think it's actually storing IPTC core
metadata in the XMP (Extensible Metadata Platform) from Adobe.
The International Press Telecommunications Council has released an rdf-schema
defining how to store the IPTC Core metadata into an XML file.
The "IPTC Metadata for XMP" homepage includes a download package of technical
docs etc that would probably be quite useful for anyone looking to implement
The userguide document gives a mapping between the new IPTC Core (xmp) fields
and those used in photoshop (several versions), irfanview, thumbsplus and
iView media pro, which would probably also be useful:
If there are other de-facto standards around I'm all ears but I suspect this
would be the most widely-accepted way at least in commercial circles, so
unless there are licensing restrictions it looks like it might be a suitable
"common ground" for importing and exporting image metadata.
Ashley J Gittins
jabber: agittins at purple.dropbear.id.au
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