Searching on IPTC core properties

[Marcel Wiesweg]

Hi,

in the past there has been demand on searching for certain metadata
properties, mostly those in IPTC Core, but Dublin Core as well. (see below for
a list)

I am not familiar with the way you are using such properties, so it's
difficult to find out what exactly we should provide.
This means I am looking for:

- Use Cases and Use Scenarios for working with such properties, searching in
particular
- Sample images, preferably two or three for each use case, with the affected
metadata, so that I can test with real life examples. (you can send to my
private address)





List of possibly supported fields:

- IPTC Core properties:

CopyrightNotice
Creator
Provider
RightsUsageTerms
Source

CountryCode, Country
City Location Province/State
CreatorJobTitle
Instructions
IntellectualGenre
JobID
Scene
SubjectCode

- Dublin Core properties:
 (what relation do they have with similar ones from IPTC core?)

contributor
creator
publisher
rights
source

coverage
format
identifier
language
relation
type
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Le Monday 12 May 2008 20:47:19 Marcel Wiesweg, vous avez écrit :

> Hi,
>
> in the past there has been demand on searching for certain metadata
> properties, mostly those in IPTC Core, but Dublin Core as well. (see below
> for a list)
>
> I am not familiar with the way you are using such properties, so it's
> difficult to find out what exactly we should provide.
> This means I am looking for:
>
> - Use Cases and Use Scenarios for working with such properties, searching
> in particular
> - Sample images, preferably two or three for each use case, with the
> affected metadata, so that I can test with real life examples. (you can
> send to my private address)

Hi Marcel ,

here is an example that show how I work. I'm not trying to say that this is
the right way but this is mine :)

I'm not going to talk only about search, so there will probably be ideas for
other part of digikam :).

First of all I transfer my photos to a temporary directory. Then I use gqview
to add some IPTC tags. I use gqview  because this viewer is fast and I wrote
perl scripts which I can launch directly from gqview. The IPTC tags that I
set are:
 . Source  
 . Copyright Notice  
 . City  
 . Credit
 . By-line
 . Headline
 . Caption

I perform this outside of digikam because the photos may have been taken by my
wife, my son or myself. My scripts have source, Copyright Notice, Credit and
By-line preset depending on the protograph who took the photo, so I just need
to select the protograph to set all this settings. I think it will a good
feature to have seach kind of "photograph selection".

When this is finished, I import these photos in digikam and sets all keywords.

I never set City as keyword because it is already sets in the City IPTC tag.

When I search for photo I may use keywords (more than one, using either 'or'
or 'and' between them), city Headline, Caption or credit (because credit,
Copyright and source are similar in my case).
I also search photo using exif tags (Lens name, Focal lenght, Iso, Speed,
Aperture)

I also plan to use scene code (news code) to describe my photos. I think this
may be a powerful tools to categorize photos. If I understood well, scene
code number uses a hierarchy. A lot of information can be found at
http://www.iptc.org/NewsCodes/ For french reader, you can found some
explanation at
Of course, I think that digikam should include the definition of such scene
code and permit to search based on them.

That's all for the moment

Philippe

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