https://bugs.kde.org/show_bug.cgi?id=426481
Bug ID: 426481
Summary: Face recognition feels like a regression from 6.4
Product: digikam
Version: 7.1.0
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: Faces-Recognition
Assignee: digikam-bugs-n...@kde.org
Reporter: services-...@4degrees.pro
Target Milestone: ---
SUMMARY
Recognising faces in Digikam 6.4 often yielded good results. Having tagged a
number of faces manually, it was rare that I had to correct a suggestion for a
recognised face. After upgrading to 7.1 Digikam seems to almost never correctly
recognise a face. Instead it often suggests an incorrect face (the wrong person
for the face). As an example I have 2k+ pictures of my son's face tagged and
maybe 5 of a friend's child. Digikam will suggest the other child for my son's
face nearly all of the time. This didn't used to happen in 6.4 so this feels
like a regression.
I have tried rebuilding the face database with no improvement. I have also
tried adjusting the setting for specificity from 50 to 90 in increments of 10
with no success - it either starts suggesting _any_ face at around 60 or no
faces at around 90. There does not appear to be a sweet spot for my collection.
STEPS TO REPRODUCE
1. Run "Detect faces"
2. Manually set many faces of one person and then a few of another person from
the detected faces.
3. Run "Recognise faces".
OBSERVED RESULT
Digikam suggests the incorrect face most of the time (often the less tagged
face).
EXPECTED RESULT
Digikam should suggest the correct face.
SOFTWARE/OS VERSIONS
Windows: Windows 10
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