Bug 440773

Summary:	Check for overlapping face regions
Product:	[Applications] digikam	Reporter:	mike_t_bike
Component:	Faces-Detection	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	wishlist	CC:	caulier.gilles, metzpinguin, natmo, pschonmann
Priority:	NOR
Version First Reported In:	7.3.0
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:	https://invent.kde.org/graphics/digikam/commit/7253440154529ab5d986c2869b08b5281639028e	Version Fixed/Implemented In:	7.4.0
Sentry Crash Report:

Description mike_t_bike 2021-08-09 08:57:56 UTC

SUMMARY
In a historically grown photo collection persons have already been tagged. Digikam now detects faces where already rectangles show a face with a name. But it suggests someone completely different or leaves the field empty.
As ordinary user I'd expect that either overlapping regions with only one face are merged or at least existing names are used as suggestion.

STEPS TO REPRODUCE
1. Take a large image collection with faces already tagged.
2. Start face detection and recognition.
3. Look into suggestions.

OBSERVED RESULT
Overlapping rectangles show a name and digikam suggests a different name or nothing for the recently detected face.

EXPECTED RESULT
Rectangles are merged or at least the existing name of the overlapping face is used.

SOFTWARE/OS VERSIONS
Windows: 10

ADDITIONAL INFORMATION

Comment 1 Maik Qualmann 2021-08-09 10:03:28 UTC

Duplicate of Bug 415777 ?

In fact, we are checking for overlapping areas of the face, we may just need to increase the radius a little.

Maik

Comment 2 Maik Qualmann 2021-08-09 10:04:55 UTC

A test image with existing face regions would be good.

Maik

Comment 3 mike_t_bike 2021-08-09 19:51:23 UTC

I just sent an email.

Kind regards,
Michael

Comment 4 Maik Qualmann 2021-08-09 20:19:11 UTC

Thank you for the test image. The problem has already been reported to us once, but I have not yet been able to reproduce it and unfortunately I cannot reproduce it with this image either. When I do a face scan with the active Yolo v3 engine, 4 more faces are found in the background, the two in front remain unchanged and are also not doubled. Tomorrow I will test it on a Windows machine to see if there are any differences.

Maik

Comment 5 Maik Qualmann 2021-08-22 16:34:30 UTC

*** Bug 441378 has been marked as a duplicate of this bug. ***

Comment 6 Maik Qualmann 2021-09-26 16:00:06 UTC

Git commit 7253440154529ab5d986c2869b08b5281639028e by Maik Qualmann.
Committed on 26/09/2021 at 15:57.
Pushed by mqualmann into branch 'master'.

check for existing faces in the database
when reading face metadata.
Related: bug 441378, bug 415777
FIXED-IN: 7.4.0

M  +2    -2    NEWS
M  +37   -11   core/libs/database/item/scanner/itemscanner_photo.cpp

https://invent.kde.org/graphics/digikam/commit/7253440154529ab5d986c2869b08b5281639028e

Comment 7 Maik Qualmann 2022-10-12 20:47:41 UTC

*** Bug 460321 has been marked as a duplicate of this bug. ***