https://bugs.kde.org/show_bug.cgi?id=507101
Bug ID: 507101
Summary: OpenCV 4.12 exception and face classifier not working
Classification: Applications
Product: digikam
Version First 8.7.0
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Faces-Recognition
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
STEPS TO REPRODUCE
1. Open DigiKam
2. Try to recognize and classify faces
OBSERVED RESULT
It detects the faces, but it can't classify it, it writes all as "Unrecognized"
face
EXPECTED RESULT
Putting faces in their "people" tags
SOFTWARE/OS VERSIONS
Archlinux latest updates 16/July/2025
KDE Plasma Version: Not using KDE
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
ADDITIONAL INFORMATION
Error shows at start:
$ digikam
Fontconfig warning: using without calling FcInit()
digikam.facesengine: FaceClassifier::loadTrainingData: exception:
OpenCV(4.12.0) /usr/include/opencv4/opencv2/core/mat.inl.hpp:921: error:
(-215:Assertion failed) (unsigned)(pt.x * DataType<_Tp>::channels) <
(unsigned)(size.p[1] * channels()) in function 'at'
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