[Digikam-users] comments in exif data oder jpeg somments field

[Caulier Gilles]

Le Jeudi 20 Juillet 2006 08:10 PM, vous avez écrit :
> Hi Gilles,
>
> thanks for your help first of all! Here is the scenario again: I have a
> database of all my images, activated settings->configure
> digikam->Embedded Info->Save image comments as embedded comments (JFIF)
> in JPEG images. Among my images e.g. is the attached file which I
> annotated with the word "Fernsehturm". As far as I understood the idea
> of embedded comments, I should be able to take this image now delete the
> digikam3.db database file, import it in digikam again without loosing my
> annotations, right? 

ok, ok, ok. Yes, this is implemented in... 0.9.0 only, not 0.8.x !

The implementation look over the simple idea of restoring Comments from 
files :

- Comments from JFIF section, or from Exif section, or from IPTC section. 
Implemented, work fine.
- Rating from IPTC. Implemented, work fine.
- Internal Time stamp from Exif or IPTC. Implemented, work fine.
- Tags form IPTC : implemented but not tested. In fact all tags are stored in 
IPTC (both than database), but the restoration in database is not yet 
complete. I have planed to do it for 0.9.0 final release.



> This is what I did - the annotations were lost 
> afterwards...
> But maybe I simply didn't get the idea right...
>
> I would consider embedded comments useful when it doesn't make me loose
> my annotations one day I decide to use another photo management app or
> when I want to send my photos including my comments to friends. If it
> works like this, you should be able to see my comment now in the
> attached file, right???

This is the rule of IPTC for sharing meta-informations between applications.

The only constraint is than IPTC only support ascii char. This is can be a 
problem with comments and tags. There is no solution fix IPTC about this 
problem (IPTC is an oldest norme). But the future is to use XMP witch support 
UTF8. This is planed when Exiv2 library will support it.

>
> thx for your help!
> chris

De nada

Gilles