Bug 397744

Summary:	Face recognition not working
Product:	[Applications] digikam	Reporter:	Rob D <duke>
Component:	Faces-Recognition	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	metzpinguin
Priority:	NOR
Version First Reported In:	6.0.0
Target Milestone:	---
Platform:	Appimage
OS:	Linux
Latest Commit:		Version Fixed In:	6.1.0
Sentry Crash Report:

Description Rob D 2018-08-22 13:40:59 UTC

Faces are detected, but not recognised.  This is the error I get when launched on the command line.  

---

Digikam::DetectionWorker::process: Found 1 faces in "P7123086.ORF" QSize(2400, 3200) QSize(3472, 4640)
OpenCV(3.4.1) Error: Bad argument (This LBPH model is not computed yet. Did you call the train method?) in predict, file /b/dktemp/digikam-master/core/libs/facesengine/recognition-opencv-lbph/facerec_borrowed.cpp, line 376
Digikam::RecognitionDatabase::recognizeFaces: cv::Exception: OpenCV(3.4.1) /b/dktemp/digikam-master/core/libs/facesengine/recognition-opencv-lbph/facerec_borrowed.cpp:376: error: (-5) This LBPH model is not computed yet. Did you call the train method? in function predict
---

Tested with appimage on Fedora 28 and CentOS 7.4

Comment 1 Maik Qualmann 2018-08-22 19:33:06 UTC

This is not a real error message and no bug. There are no entries in the face database. In order for faces to be recognized, they must train the database by entering a few names for the found faces.

Maik

Comment 2 caulier.gilles 2019-03-20 15:16:00 UTC

After 3 weeks of work, i finally completed the compilation of AppImage using Qt
5.11.3 + QWebkit 5.212.

New 6.1.0 pre-release AppImage bundle can be found here (64 bits only for the
moment) :

https://files.kde.org/digikam/

Please check if this bugzilla entry still valid.

Thanks in advance

Gilles Caulier

Comment 3 Maik Qualmann 2019-03-28 20:49:57 UTC

This is not an error, the database has to be trained to get results. I close the bug now.

Maik