Bug 469178 - Face recognition for group photos
Summary: Face recognition for group photos
Status: RESOLVED FIXED
Alias: None
Product: digikam
Classification: Applications
Component: Faces-Recognition (show other bugs)
Version: 8.0.0
Platform: Microsoft Windows Microsoft Windows
: NOR wishlist
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-04-30 08:37 UTC by Andy
Modified: 2024-10-17 20:24 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In: 8.5.0
Sentry Crash Report:


Attachments
Discover faces "Extra small" (283.58 KB, image/jpeg)
2024-10-16 21:20 UTC, Andy
Details

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Description Andy 2023-04-30 08:37:20 UTC
Hi
Face recognition struggles with large group photos.
I had a photo where a name was suggested about 15 times. 
Maybe something can be changed here.
Comment 1 caulier.gilles 2024-10-08 09:34:59 UTC
Hi Michael,

Another entry relevant of the Faces Recognition clustering i think...

Best

Gilles
Comment 2 Michael Miller 2024-10-08 10:20:35 UTC
Hi Andy,
DigiKam 8.5.0 will have new facial detection and facial recognition capabilities.  One of the new features allows the user to specify if there are "very small" faces in the image digiKam should look for.  This helps significantly with recognition of faces in large group photos.

I hope you'll test out the new feature in when digiKam 8.5.0 is released and let us know how we did.

Cheers,
Mike
Comment 3 Andy 2024-10-10 17:59:04 UTC
Hello Michael,

I tested with "Small" and can see a noticeable improvement. 
Almost all faces in large group photos are found. 
But I want to test again with "Extra Small".
Comment 4 Michael Miller 2024-10-15 22:13:01 UTC
Hi Andy,
Were you able to test the "Extra Small" faces option?  Did it find all the faces?

Cheers,
Mike
Comment 5 Andy 2024-10-16 21:20:46 UTC
Created attachment 174914 [details]
Discover faces "Extra small"
Comment 6 Andy 2024-10-16 21:22:23 UTC
Hi Mike, 
almost all the faces have been found. A few are still missing, although they are also clearly recognizable.
See attachment

Andy
Comment 7 Michael Miller 2024-10-16 21:49:20 UTC
Thanks Andy, we appreciate your help!  It looks like we're moving in the right direction.

Lowering the accuracy a little more should pick up most of the other faces.  I strongly recommend that you when drop the accuracy below 50 with "Extra Small" faces you only scan for faces on a single image, or a folder with only a few images to limit the number of false positives.

If you lower the accuracy to 40 or 45 in the settings and then go back to the folder with the image, you can right click on the image and select "Scan for faces".

Does that get them all?

Cheers,
Mike
Comment 8 Andy 2024-10-17 20:10:41 UTC
Hello Mike,
with a value of 60 all faces were found. Thank you very much!

Andy
Comment 9 Michael Miller 2024-10-17 20:24:01 UTC
Hallo Andy,
Bitte!

Thank you for your patience, and my limited German.  I'm happy this is working for you now.

Cheers,
Mike