export of albums

[Florian Ehinger]

Hello

* Is it possible to export some albums from the database including the tags.
This would be very nice for backups and to give certain pictures or albums to
other persons (computers).

If it is possible to export, is it also possible to import such albums to
digikam?

Thanks
  Florian
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[Gilles Caulier-2]

Le Mardi 30 Mai 2006 11:06 PM, Florian Ehinger a écrit :
> Hello
>
> * Is it possible to export some albums from the database including the
> tags. This would be very nice for backups and to give certain pictures or
> albums to other persons (computers).
>
> If it is possible to export, is it also possible to import such albums to
> digikam?
>

Not yet. this is a big job planed later 0.9.0 release. Sorry...

Gilles
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Dnia wtorek, 30 maja 2006 23:06, Florian Ehinger napisał:
> Hello
>
> * Is it possible to export some albums from the database including the
> tags. This would be very nice for backups and to give certain pictures
> or albums to other persons (computers).

In 0.9svn version tags are stored as IPTC tags inside of images. So,
even if you just copy images somewhere this info will be there.

> If it is possible to export, is it also possible to import such albums
> to digikam?

It would be interesting feature: try to interpret IPTC tags to mix
photos into digiKam structure.

m.

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[Gilles Caulier-2]

Le Mercredi 31 Mai 2006 12:53 AM, Mikolaj Machowski a écrit :
> Dnia wtorek, 30 maja 2006 23:06, Florian Ehinger napisał:
> > Hello
> >
> > * Is it possible to export some albums from the database including the
> > tags. This would be very nice for backups and to give certain pictures
> > or albums to other persons (computers).
>
> In 0.9svn version tags are stored as IPTC tags inside of images. So,
> even if you just copy images somewhere this info will be there.

yes, tags are saved in keyword IPTC tags but there are a main restriction :
IPTC only support ascii char ! take a care to use only ASCII in tags labels.

Also, the fonction to create unexisting tags in database when an image is
imported is not finalized. still TODO...

Gilles
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Dnia środa, 31 maja 2006 10:59, Caulier Gilles napisał:

> Le Mercredi 31 Mai 2006 12:53 AM, Mikolaj Machowski a écrit :
> > Dnia wtorek, 30 maja 2006 23:06, Florian Ehinger napisał:
> > > Hello
> > >
> > > * Is it possible to export some albums from the database including
> > > the tags. This would be very nice for backups and to give certain
> > > pictures or albums to other persons (computers).
> >
> > In 0.9svn version tags are stored as IPTC tags inside of images. So,
> > even if you just copy images somewhere this info will be there.
>
> yes, tags are saved in keyword IPTC tags but there are a main
> restriction : IPTC only support ascii char ! take a care to use only
> ASCII in tags labels.

Major limitation. Maybe non-ascii chars could encoded as something like
<U+hexvalue> and later reencoded as character? Even in programs not aware
about that convention it could be understandable (although not very
readable).

> Also, the fonction to create unexisting tags in database when an image
> is imported is not finalized. still TODO...

But good this *is* in todo :)

m.

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[Gilles Caulier-2]

On Wednesday 31 May 2006 01:58 pm, Mikolaj Machowski wrote:

> Dnia środa, 31 maja 2006 10:59, Caulier Gilles napisał:
> > Le Mercredi 31 Mai 2006 12:53 AM, Mikolaj Machowski a écrit :
> > > Dnia wtorek, 30 maja 2006 23:06, Florian Ehinger napisał:
> > > > Hello
> > > >
> > > > * Is it possible to export some albums from the database including
> > > > the tags. This would be very nice for backups and to give certain
> > > > pictures or albums to other persons (computers).
> > >
> > > In 0.9svn version tags are stored as IPTC tags inside of images. So,
> > > even if you just copy images somewhere this info will be there.
> >
> > yes, tags are saved in keyword IPTC tags but there are a main
> > restriction : IPTC only support ascii char ! take a care to use only
> > ASCII in tags labels.
>
> Major limitation. Maybe non-ascii chars could encoded as something like
> <U+hexvalue> and later reencoded as character? Even in programs not aware
> about that convention it could be understandable (although not very
> readable).

no, IPTC is a normalization. If you do something like that, other
photomanagement programs can't read these informations.

The only way to solve IPTC limitations is to use XMP metadata. It's planed to
add XMP support into Exiv2 library in the future.

Gilles
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Dnia czwartek, 1 czerwca 2006 08:03, Gilles Caulier napisał:
> > Major limitation. Maybe non-ascii chars could encoded as something
> > like <U+hexvalue> and later reencoded as character? Even in programs
> > not aware about that convention it could be understandable (although
> > not very readable).
>
> no, IPTC is a normalization. If you do something like that, other
> photomanagement programs can't read these informations.

They will read. Slightly less readable but at least understandable for
end-user. What is more useful for end-user::

    za?ó??

or::

    za<U+017c>ó<U+0142><U+0107>

In second case (s)he at least has chance to understand that.

> The only way to solve IPTC limitations is to use XMP metadata. It's
> planed to add XMP support into Exiv2 library in the future.

OK.

m.

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[Gilles Caulier-2]

On Thursday 01 June 2006 09:37 pm, Mikolaj Machowski wrote:

> Dnia czwartek, 1 czerwca 2006 08:03, Gilles Caulier napisał:
> > > Major limitation. Maybe non-ascii chars could encoded as something
> > > like <U+hexvalue> and later reencoded as character? Even in programs
> > > not aware about that convention it could be understandable (although
> > > not very readable).
> >
> > no, IPTC is a normalization. If you do something like that, other
> > photomanagement programs can't read these informations.
>
> They will read. Slightly less readable but at least understandable for
> end-user. What is more useful for end-user::
>
>     za?ó??
>
> or::
>
>     za<U+017c>ó<U+0142><U+0107>

Of course, but the second problem of IPTC the the size of strings limitation.
IPTC keywords used to store digiKAm tags are limited to 64 char !

XMP don't have this limitation.

Gilles
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