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List:       kde-bugs-dist
Subject:    [kphotoalbum] [Bug 328943] Description EXIF information
From:       Johannes Zarl <johannes () zarl ! at>
Date:       2015-01-23 17:09:33
Message-ID: bug-328943-17878-oDOxXxpFgA () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=328943

--- Comment #4 from Johannes Zarl <johannes@zarl.at> ---
Ok. I finally got some time to look into this with more detail:

> I edited the Caption field in Microsoft (Vista) Photo Gallery of an image.
Ok.

> I then opened the same image in KPhotoAlbum and that caption came in on the \
> Description box in the Annotate Image dialog.

At this point, the image was imported to KPA, and you apparently had "Use EXIF
description" checked in the „Configure KPhotoAlbum..."|„General" settings page.

> I then edit the Description to something different and opened the image in Eye of \
> Gnome and that Description still has the original caption as saved from Photo \
> Gallery. The new description is not there.

KPA has the policy of "don't alter the image files in any way". That means that
meta-data is never written back to an image. This is a conscious
design-decision on part of KPA.

> If I reopen the image in KPhotoAlbum then the new description is still there.

Yes, since it was written to the database of KPA.

> If I go to the Edit EXIF dialog box, then the Title shows the same name as the \
> caption was in Photo Gallery.

KPA doesn't have a dialog box to edit the exif information. I'm assuming you
mean the „Edit all metadata" KIPI plugin. I just checked, and the plugin seems
to ignore metadata coming from a host application such as KPA.

> If I close that box, then the Description field in the Annotate Image dialog \
> disappears. I suspect that is because the Caption box was blank (even though the \
> box wasn't checked, BUG).

Thanks for reporting that. I can confirm this is happening and that this is a
bug.

> If I go back and Edit Exif metadata again and this time change the Caption area, \
> then that is copied into the Description of the Annotate Image dialog and it also \
> shows up as the description in Eye of Gnome. It does not, however, show up as the \
> caption in Photo Gallery.

This is probably both an issue in „Edit all metadata" plugin[1] and in Photo
Gallery[2]:

[1] When writing the exif ImageDescription field, the fields IPTC Caption and
XMP dc:description should be synced (or at least cleared).

[2] When reading the meta data, Photo Gallery should prefer the exif
information over IPTC and XMP data.

[1]+[2]: According to section 4.2.3 of the "Guidelines for handling metadata"
by the Metadata Working Group (http://www.metadataworkinggroup.org/specs/)

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