[Digikam-users] Controlled vocabulary

[John Bestevaar]

Hi Mark
If i understand your question correctly then Digikam does have a 
controlled vocabulary (ontology).for tags
Go to "image" then "metadata" then "edit IPTC" then "subjects" then 
click the box that says "use structured definition of the subject 
matter" then click on the dropdown list box to select the IPTC reference 
code that suits and click "apply"
This IPTC system is used by news organizations for images.
Cheers JohnB

On 28/02/12 19:44, Martin (KDE) wrote:
> Am 28.02.2012 09:52, schrieb Mark Hayes (Hotmail):
>> Dear all,
>>
>> I'm starting to get more serious about tagging/keywording my photos,
>> and that's why I'm trying to get set up with Digikam again.
>>
>> One thing that I'm looking into a little more is proper keywording
>> using a controlled vocabulary (see
>> http://en.wikipedia.org/wiki/Controlled_vocabulary) to make sure that
>> I use keywords that might help me sell photos at a later date (I
>> wish!!) - or at least allow me to find them more easily later on.  The
>> point is that a controlled vocabulary would ensure that more people
>> use the correct/same terminology to define ideas and allow easier
>> searching at a later date.  I understand that many picture libraries
>> and stock agencies prefer it.
> As already stated in the wikipedia article there are to many ways to
> define one thing and wording is not that specific. If it comes to nature
> photo it is easy, as all species have their specific name. But there are
> many things out there which have different word for the same thing (i.e.
> Karneval/Fasching in Germany) or use same words for different things
> (like football). And please keep in mind that there are many people out
> there speaking "only" native tongue.
>
> So we have different problems
> - which language to choose
> - how make the wording clear
>
> A clear terminology is a nice thing, but you have to learn them. It is
> easy for programming language as there is no other way to go. But I
> don't see any chance for photo tagging. I see no reason why I should use
> other tags than german. I can read English very well, but my son can't.
> Same is true for my mother any many other people around me.
>
> Next problem: what language shall be used for locations (country and
> city names). As long as the country/city starts with the same letter you
> can sort the data alphabetically and nay find it. But if you don't know
> the correct name searching is useless.
>
> To me the main problem is that there are specific terminology terms for
> different groups. In mathematic the complex part of a number is usually
> marked with an 'i' (sqrt(-1) = 0 + i1) but for all electronic engineers
> the little i marks the electric current so they use 'j' instead (at
> least in Germany). What is the right terminology to use?
>
> And the last part: what to do with all the photos not matching any
> controlled terminology?
>
> I use tags that fit my needs and may be useful for the people around me.
> But I must confess that I don't sell photos.
>
> Martin
>
>> Anyway, it's an idea - and I'd like to know how to go about it.
>>
>> Please can anyone tell me:
>>
>> 1.  Are there Controlled Vocabularies available and specifically for
>> Digikam?
>> 2.  Is there a repository somewhere, where I can find Open Sourced
>> controlled vocabularies that could be imported into Digikam?
>> 3.  What format would a tagging/keywording structure take in terms of
>> an import file?  Supposing I could get a list somewhere - are there
>> tools I can find for turning these into the correct structure for
>> import to Digikam?
>> 4.  Digikam's tag structure seems to be completely empty when opened
>> for first use - does anyone think that there should be an option for
>> using a 'standardised' simplified structure, or choice of tag
>> structures / vocabularies that could then be more easily populated by
>> the user (a starter tag-set to get people going)?
>>
>> I might envisage Digikam starting up the first time with a set of
>> pre-loaded Controlled Vocabulary libraries that you could choose from
>> if you wanted - from a generic simple starter-set through to more
>> complicated libraries that contain Flora and Fauna taxonomies etc etc.
>>   Then you would just go into 'tags' or whatever and tick the boxes
>> next to each "tag library" to have them toggled on or off and placed
>> into your own tag structure.  Or just create your own from scratch -
>> as it seems to be currently set up.  Or even better, choose to toggle
>> on some more structured vocabulary library, but also then add in your
>> own tags as you want or need them.
>>
>> Is there anyone else generally interested in this, either specifically
>> for Digikam or generally in the Open Source world?
>>
>> Obviously, I've used my friend Google - but can't seem to turn up
>> anything quickly...
>>
>> Comments and help from other users would be very welcome.
>>
>> Many thanks,
>>
>> Mark.
>>
>>
>>
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