[Digikam-users] saving tags and rating into IPTC tags...

[Caulier Gilles]

Le Jeudi 30 Mars 2006 08:50 PM, Daniel Bauer a écrit :
> As Gilles post is a bit to "computerish" for my skills (and I didn't really
> understand what will be saved in the image files and what not), I'd like to
> subscribe to the view of Markus:
>
> Am Donnerstag, 30. März 2006 17:37 schrieb Markus Spring:
> > Just my 0.02?:
> >
> > * I greatly appreciate the possibility to write IPTC tags - this is
> > definitely a very useful enhancement
>
> yes
>
> > * regarding the saving of information in images, however I would strongly
> > to make it configurable in a very fine grained way
> >
> > * I for my person definitely want to have my name and copyright/copyleft
> > written into the image - this could even be an automatic action after
> > downloading the images
>
> yes, and/or the possibility to write name/copyright to all (selected) files
> at once
>
> > * however I myself am not sure if I would really want to save all
> > keywords into all my images. Having them in the database is just fine for
> > me, others will decide differently. Having a choice however is one of the
> > things that makes linux and its applications so appealing for me
>
> this is a very important point for me, too.
>
> One should be able to differ clearly between "private" and "official" tags,
> where the "private" tags are those used in the digikam album as it is now
> (0.8.1) and the "official" tags are those that will be saved as IPTC tags
> to the picture.
>
> (for explanation of my point:
> I use the tags in digikam for sorting my pictures to my personal needs.
> These are private notes that are nothing to everybody else. In contrast to
> this IPTC tags are ment for copyright information and tags that can be used
> by agencies etc. So IPTC and digikam tags must be two clearly different
> things, as I dont want my customers to know how I classify my photos
> in-house and on the other hand, the "official" [published with the picture
> file] IPTC tags are not very useful for my sorting work...)
>
> > * the possibility to export/import parts of the image library should be
> > seen separately from the issue of writing information into the images.
> > However I regard this as a missing feature, together with the topic of
> > having off-line stored images remaining in the database. Calculating a
> > md5-checksum of the image information to identify files seems to be a
> > logical step in this contect
> >
> > Ok, now it's 0.05? ;-)
> >
> > Regards - Markus
>
> Sorry, if I explain too much at length. My english and computer knowledge
> are not that good and it could easily be that Gilles already did exactly
> this and I just haven't understood. In this case I apologise for the
> noise...
>
> Daniel

No problem for the sound, Daniel, especially when it come from a 
pro-photographer (:=)))

But my purpose of my mail is... witch IPTC tags is need to use to store 
digiKam tags and rating informations !

My proposal is just a first approach. If you have already used a photo 
managment software witch use IPTC with the same digiKam functionnalities 
(under MAC or Win32), i would a feedback about that, to give a compatibily.

IPTC tas descriptions are very generic (take a look in IPTC spec. for 
example), because IPTC isn't dedicaced to photograph only. We need to choose 
the right tags to store digiKam information

Writting digiKam tags to IPTC ins't really difficult with Exiv2 library. Today 
i have implemented Rating to IPTC implementation (to svn). Still digiKam tags 
to do.

Regards

Gilles