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

[Leif Huhn]

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





--- Comment #21 from Leif Huhn <leif dkstat com>  2011-07-12 15:07:17 ---
I have looked at bug 268688 (DigiKam won't delete tags in metadata).  Until
that bug is resolved, I suppose I could implement the same logic for faces as
we have for tags now.  The downside is that it would be impossible to delete a
face from the tags.  For tags there is a workaround (bug 268688 comment #8).  I
don't believe the workaround would work for faces because there is no panel for
editing face tag data.

Also, faces are more complicated.  What do we do in this situation?

1. User adds a file to DigiKam that already has a face Person/Alice.  DigiKam
imports the face data.
2. Close DigiKam.  Open WLPG.  Move Alice's rectangle.
3. Close WLPG.  Open DigiKam.  DigiKam still has the old rectangle.  Save
Metadata.
   Do we overwrite the metadata?
4. Change the rectangle inside DigiKam.  Save metadata.
   Do we overwrite the metadata?

Metadatahub doesn't have enough information to know to not overwrite the
metadata in #3 but to make a change in #4.

I have proposed a fix in bug 268688 for the issue with tags.  We could do
something similar for faces.

I propose that for right now, we import faces from WLPG, but only read/write a
DigiKam specific face tag.  I think telling the user that DigiKam can't write
WLPG faces (but can import them) is easier to understand than DigiKam being
able to add WLPG faces (but not delete or rename them).

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