Metadata Storage in digikam

[Thomas-260]

Hello Digikam experts,

thank you for your great Photo Management Software, I'm looking forward to
using it in the future. (Until now, I used Picasa on Debian stable because it
was the only application able to read my ARW files out of the box.)

I have a few questions concerning the "Embedded Image information Management"-
Section of digikam's settings-dialogue. I looked at the documentation, but it
seems outdated here (with pictures showing KDE3).

So here's the problem: With Picasa and Adobe Bridge, I added several captions
to my pictures and would very much like to keep them. As far as I know these
programs store them in IPTC tags. If I select "Save image tags as keyword
tags" now and import my tagged pictures, will all of Picasa's captions really
be lost? This is how I understood the warning in the documentation but it's
hard to believe.

Some other questions also occured: Which of the options in the Dialogue
"Allgemeine Metadaten-Aktionen" (General Metadata Information) concern IPTC-
Data and how? What does "Bildstichwörter in Schlüsselwörtern speichern" (Save
picture keywords in keywords) mean exactly, which Keywords are to be stored to
which other keywords? Does the experimental feature "Metadaten in Rohdateien
speichern" (Save metadata in raw files) refer to DNG-negatives (only)?

Sorry to bother you with these questions. If you could point me to an updated
help page, I'd be very glad, too.

Thanks in advance, and keep on the good work!
Thomas



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[Gilles Caulier-4]

2009/10/20 Thomas <[hidden email]>:
> Hello Digikam experts,
>
> thank you for your great Photo Management Software, I'm looking forward to
> using it in the future. (Until now, I used Picasa on Debian stable because it
> was the only application able to read my ARW files out of the box.)

digiKam can already open and edit ARW files...

Gilles Caulier
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[Thomas-260]

Am Dienstag, 20. Oktober 2009 23:39:27 schrieb Gilles Caulier:
> 2009/10/20 Thomas <[hidden email]>:
> > Hello Digikam experts,
> >
> > thank you for your great Photo Management Software, I'm looking forward
> > to using it in the future. (Until now, I used Picasa on Debian stable
> > because it was the only application able to read my ARW files out of the
> > box.)
>
> digiKam can already open and edit ARW files...

Hi,

I know that. That's why I am going to use it now.
Sorry to ask, but have you read any further?

Thanks for your reply.
Thomas

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Am Dienstag 20 Oktober 2009 22:41:59 schrieb Thomas:

> So here's the problem: With Picasa and Adobe Bridge, I added several
>  captions to my pictures and would very much like to keep them. As far as I
>  know these programs store them in IPTC tags. If I select "Save image tags
>  as keyword tags" now and import my tagged pictures, will all of Picasa's
>  captions really be lost? This is how I understood the warning in the
>  documentation but it's hard to believe.

As long this programs store the captions in IPTC or XMP tags digikam should
be able to import them and display them correctly.

> Some other questions also occured: Which of the options in the Dialogue
> "Allgemeine Metadaten-Aktionen" (General Metadata Information) concern
>  IPTC- Data and how? What does "Bildstichwörter in Schlüsselwörtern
>  speichern" (Save picture keywords in keywords) mean exactly, which
>  Keywords are to be stored to which other keywords?

This is the feature you are looking for. It makes digikam save your meta data
in IPTC and XMP tags in the specific picture.

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[Gilles Caulier-4]

2009/10/20 Thomas <[hidden email]>:

> Hello Digikam experts,
>
> thank you for your great Photo Management Software, I'm looking forward to
> using it in the future. (Until now, I used Picasa on Debian stable because it
> was the only application able to read my ARW files out of the box.)
>
> I have a few questions concerning the "Embedded Image information Management"-
> Section of digikam's settings-dialogue. I looked at the documentation, but it
> seems outdated here (with pictures showing KDE3).
>
> So here's the problem: With Picasa and Adobe Bridge, I added several captions
> to my pictures and would very much like to keep them. As far as I know these
> programs store them in IPTC tags. If I select "Save image tags as keyword
> tags" now and import my tagged pictures, will all of Picasa's captions really
> be lost? This is how I understood the warning in the documentation but it's
> hard to believe.

In theory, no.

Modern application (as digiKam) use XMP now to store information.
There are copied as it can do in IPTC, but due to limitations (char
encoding + strings size), this way is prohibited now.

To import metadata from IPTC, there is a wrapper in digiKam core.
Please test with current implementation from svn, or at least
1.0.0-beta5, where this code has been improved since 0.10.0

If something is wrong, all is possible to improve it. We just need
original image to test in local with the detaisl of informations
hosted in images.

Gilles Caulier
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