[Digikam-devel] [Bug 265022] New: UI's handling of People tags is confusing

[Adam Spiers]

https://bugs.kde.org/show_bug.cgi?id=265022

           Summary: UI's handling of People tags is confusing
           Product: digikam
           Version: 2.0.0
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: Face Detection
        AssignedTo: digikam-devel at kde.org
        ReportedBy: kde-bugs at adamspiers.org


Version:           2.0.0 (using KDE 4.5.5) 
OS:                Linux

The People tags can be used in two ways:

(1) manual tagging of photos in the same way that any other
    (non-People) tags are used

(2) tagging by the face detection/recognition code

Clearly the backend makes a distinction between these uses - I think
I'm right in saying that basically (1) is governed by the ImageTags
table, whereas (2) is governed by the TagProperties and
ImageTagProperties tables which use person/kfaceId and
tagRegion/autodetectedFace properties respectively.

However, the way this is presented in the UI is confusing.  The Tags
sidebar corresponds to (1), but when you use the People sidebar you
get a mix of (1) and (2): the image counts shown in parentheses
correspond to the number of photos with that manual tag as per (1),
but if you click on that tag, the preview pane in the middle only
shows photos matching that tag as per (2).

So for example if you manually tag 50 photos with 'People/Joe' before
you do any face recognition, and then via face recognition tag a
further 10, you will see 'Joe (50)' in the People sidebar, and if you
click on it, you will only see 10 photos in the middle pane.  This is
difficult for a normal user to understand.

I'm not sure what the best UI solution for this is, but ideally it
should allow some way of showing any of the following:

  - all photos which have a tagRegion corresponding to Joe

  - all photos which have a tagid corresponding to Joe but no
    tagRegion - this could be useful for example prior to exporting to
    facebook to ensure that any photos containing Joe would be
    properly tagged in facebook (which requires a tag region)

  - all photos which have a tagRegion corresponding to Joe but no
    normal tagid (although it looks like digikam automatically adds a
    tagid when setting a kfaceId/tagRegion? in which case this case is
    not needed)

Do we have any UI design experts who could help?

Reproducible: Always

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