[Digikam-devel] [digikam] [Bug 345220] New: Import ACDSee Categories to hierarchical Tags

[Alan Pater]

https://bugs.kde.org/show_bug.cgi?id=345220

            Bug ID: 345220
           Summary: Import ACDSee Categories to hierarchical Tags
           Product: digikam
           Version: 4.8.0
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: Metadata
          Assignee: digikam-devel at kde.org
          Reporter: alan.pater at gmail.com

The ACDSee family of photo management applications has it's own schema to store
hierarchical keywords or tags. digikam does not recognize these as tags and
does not import them. Users trying to migrate from ACDSee to digikam lose
access to these tags.

digikam has implemented it's own schema as has Microsoft and Adobe Lightroom.
The MWG also has proposed a standard schema. However, the Adobe schema can be
considered as the defacto standard, as many other imaging applications have
adopted it.

I've documented how various applications implement hierarchical keywords/tags.
In each application I created the same 6 level hierarchy and tagged a sample
image with level 2 and level 5. I then used exiv2 to read the resulting
metadata. These are just the main hierarchical fields written, flat tags are
also in xmp.dc.subject, for example.

    6 Level
(X)     6.2 Level
            6.3 Level
                6.4 Level
(X)                 6.5 Level
                        6.6 Level


* Digikam 4.8
Xmp.digiKam.TagsList        XmpSeq  2  6 Level/6.2 Level/6.3 Level/6.4
Level/6.5 Level, 6 Level/6.2 Level

* Adobe Lightroom 4.4
Xmp.lr.hierarchicalSubject  XmpBag  2  6 Level|6.2 Level, 6 Level|6.2 Level|6.3
Level|6.4 Level|6.5 Level

* ACDSee 8 Pro
Xmp.acdsee.categories   XmpText   282   <Categories><Category Assigned="0">6
Level<Category Assigned="1">6.2 Level<Category Assigned="0">6.3 Level<Category
Assigned="0">6.4 Level<Category Assigned="1">6.5
Level</Category></Category></Category></Category></Category></Categories>


Reproducible: Always

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