[Digikam-devel] [Bug 271030] Windows Live Photo Gallery people tagging Compatibility

Leif Huhn leif at dkstat.com
Sun Jul 10 18:00:32 BST 2011


https://bugs.kde.org/show_bug.cgi?id=271030





--- Comment #9 from Leif Huhn <leif dkstat com>  2011-07-10 17:00:31 ---
Hi Gilles,

Right now my patch forces a load of the faces data each time (for testing).  I
found it surprising that the menu option "Image, Reread Metadata from Image"
did not reload most of the metadata (but only a small amount).  At least I
think that's what's happening (I didn't test that much).

How do we handle the situation where a user already has the image in DigiKam
(and so we tend not to reload the metadata) but we want to pick up these WLPG
tags now?  I'd be inclined to make the "Reread Metadata from Image" always load
the face data (and more).

I haven't written write support yet.  I would like to hear your comments on my
patch before I continue to write code, in case you can give me some pointers on
how DigiKam arranges functions, etc.

Personally, I do not use Windows Live Photo Gallery.  I merely wanted DigiKam
to read and write faces to tags.  My web research indicated that there are only
few programs that write faces to XMP, and most of them understand WLPG.  I do
not have time now to summarize my research right now but I will try later today
or tomorrow.

I think Picasa only keeps its face data inside its own database (and not in
tags).  I have seen web postings that say that.  It may have changed (I have
not tested).

I will upload the patch now.

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