[Digikam-users] Tags and everything related to them

[Gian Paolo Sanino Vattier]

I confirm also that mirroring with XMP namespace is working great work
Gilles.

About IPTC I fully agree and understand the concept that it is limited,
however the actual way that Digikam deals with is by adding the database
content to IPTC_without removing the previous content on that
namespace_, resulting that tags that were introduced by Digikam in the
past, that may now be considered as deprecated remain there, cannot be
deleted and have a change to reappear on the database if the images are
shared with computers with previous versions of Digikam (ej. 3.5.0) or
other applications that may focus on IPTC.  It makes sense to me that
Digikam should be able to delete content that was added by Digikam.
Maybe it can and I just do not know how to use it.

It just happened to me when sharing a catalog of photos with our remote
research station with limited Internet access to upgrade Digikam (and
its dependencies), many deprecated tags reappeared on the database
creating a huge confusion on the operators.

It would be great to find a way to really erase the previous IPTC
keywords in the process that updates its content (instead of the actual
additions), removing that way deprecated tags on IPTC namespace and that
way we can move on XMP without leaving behind deprecated tags in other
namespaces.

Just an idea about the subject...
kind regards
gps


On 07/24/2014 12:47 PM, Gilles Caulier wrote:
> digiKam XMP namespace is used primary to populate digiKam database and
> duplicate database metadata to image, WITHOUt to lost anything.
>
> In second way, digiKam update also tags at other place in XMP and
> IPTC, but this can introduce some leak about database properties (IPTC
> for ex as serious limitation about strings. Nested Tags are also badly
> supported in standard XMP namespace.
>
> Gilles Caulier
>
> 2014-07-24 17:55 GMT+02:00  <cl at isbd.net>:
>> Gilles Caulier <caulier.gilles at gmail.com> wrote:
>>> 2014-07-24 12:05 GMT+02:00  <cl at isbd.net>:
>>>> Gilles Caulier <caulier.gilles at gmail.com> wrote:
>>>>> digiKam always write tags in XMP, into dedicated "digiKam" namespace.
>>>>>
>>>>> After to write and read, as this XMP namespace is the first checked to
>>>>> sync database, other and old place in exif, iptc or xmp where tags are
>>>>> recorded must be ignored.
>>>>>
>>>> Well that's pretty much useless IMHO, what happens when you move some
>>>> images to other places?
>>>>
>>>  >what happens when you move some images to other places
>>>
>>> ??? places ? What do you mean exactly ? Album ? if yes, this have no
>>> effect on tags.
>>>
>> I mean other applications.  Digikam isn't the only program in the
>> world that uses tags on images.  By creating its own little private
>> place to keep tags it means it's never going to cooperate with other
>> programs using tags.
>>
>> I mean what about images which one transfers to a web page and/or web
>> gallery?  They use tags too.
>>
>> I understand it may be difficult but without the ability to manage
>> tags in such a way that other programs can see and use them then they
>> are fundamentallyy useless (for me anyway).
>>
>> --
>> Chris Green
>> ·
>>
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