[Bug 271679] New: Digikam detects but does not recognize faces.

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=271679


Gilles Caulier <[hidden email]> changed:

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--- Comment #19 from Gilles Caulier <caulier gilles gmail com>  2012-01-23 07:53:27 ---
*** Bug 292248 has been marked as a duplicate of this bug. ***

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[Gilles Caulier-4]

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--- Comment #20 from Gilles Caulier <[hidden email]> ---
*** Bug 314744 has been marked as a duplicate of this bug. ***

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[Gilles Caulier-4]

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--- Comment #21 from Gilles Caulier <[hidden email]> ---
*** Bug 316161 has been marked as a duplicate of this bug. ***

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[Lyall]

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--- Comment #22 from Lyall <[hidden email]> ---
I can confirm that face location is working very well, but recognition does not
work at all.
Digikam version 3.1.0 on KDE platform 4.10.2 on Gentoo amd64 system.

Setting face recognition accuracy anywhere between 70% and 95% makes no
difference.

When running digikam from an xterm, it appears, during face recognition,
digikam generates the following text, once for each image.

QImage::scaled: Image is a null image

No additional diagnostics are generated on the terminal, not even a source
module or line number.

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=271679

--- Comment #23 from Gilles Caulier <[hidden email]> ---
Good news.

Face Recognition is now implemented in dedicated git branches :

libkface :
https://projects.kde.org/projects/extragear/libs/libkface/repository/show?rev=opentld

digiKam :
https://projects.kde.org/projects/extragear/graphics/digikam/repository/show?rev=libkface

Code still alpha and we plan to merge these branch to master for next 3.3.0
release.

But if you want, you can test to checkout code and recompile whole digiKam...

Gilles Caulier

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

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             Status|CONFIRMED                   |RESOLVED
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--- Comment #24 from Gilles Caulier <[hidden email]> ---
I recommend to test next version 4.1.0 where a lots of fixes and improvements
have been introduced around face recognition feature

Gilles Caulier

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[Gilles Caulier-4]

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--- Comment #25 from Gilles Caulier <[hidden email]> ---
New digiKam 4.11.0 is available with official PKG installer for OSX.

https://www.digikam.org/node/740

Can you reproduce the problem with this release ?

Gilles Caulier

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[Samuel Gilbert]

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--- Comment #26 from Samuel Gilbert <[hidden email]> ---
Following Gilles' post, I tried to get face detection to work again.

What I did :
- Went to the Face tab
- Clicked on Scan collection for faces
- Selected "Skip images already scanned" and "Detect faces"
- I selected a new album for which I had never ran face detection
- I clicked scan

After a while, the faces started showing up for the new album. When the process
was complete, here is what I did :

- Clicked on Scan collection for faces
- Selected "Recognize faces"
- Clicked scan

There was no visible result even after the operation was complete.  I went back
to the album tab, selected another album then came back to the face tab and
scrolled to the album I had just scanned. I then then manually identified about
one third of the face of each person in the album.

I relaunched the scan with the "Recognize faces" option.  Still no change.

I then scanned again with the "Clear unconfirmed results and rescan" option and
"Detect and recognize faces".

At some point, Digikam crashed and since I am using the ArchLinux packages, the
stack trace wasn't really useful.

I have done a few more scans, and now I get a suggestion in bellow some of the
thumbnails in the face tab. The suggestion is pretty bad, and quite a few
pictures don't even have a suggestion. Usually the suggestion controls (textbox
+ 2 buttons) follow the mouse cursor, but sometimes it gets stuck on a
thumbnail.

I had already manually identified a few people in the album in other albums
before I launched the tests. I don't know if the identification performance
just needs more training to improve.

I don't know if I should consider this a win or fail considering the issues I
encountered.

Is there a way to clear all the face identification data _without_ launching a
scan of the entire collection? I would like to start from scratch for the
detection, training and recognition.

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[Gilles Caulier-4]

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--- Comment #27 from Gilles Caulier <[hidden email]> ---
yes. remove the database file. It's located in your home directodry, as
explained here :

http://api.kde.org/4.x-api/kdegraphics-apidocs/libs/libkface/libkface/html/index.html

Gilles Caulier

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[Gilles Caulier-4]

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--- Comment #28 from Gilles Caulier <[hidden email]> ---
digiKam 4.12.0 is out :

https://www.digikam.org/node/741

We need a fresh feedback using this release please...
Thanks in advance.

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--- Comment #29 from Jan Schneider <[hidden email]> ---
Still doesn't work at all with 4.12.0.

Face detection works, face recognition doesn't. It runs, and scans, and does
its magic, but without any results, not even on almost identical images.

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--- Comment #30 from [hidden email] ---
Try with last 4.14.0...

Gilles Caulier

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--- Comment #31 from Jan Schneider <[hidden email]> ---
Is there some backport to Kubuntu? The official backports on launchpad are
outdated badly.

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--- Comment #32 from [hidden email] ---
This file still valid using last stable 5.0.0 release ?
Gilles Caulier

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--- Comment #33 from [hidden email] ---


*** This bug has been marked as a duplicate of bug 365321 ***

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--- Comment #34 from Jmz D3an <[hidden email]> ---
Still valid in 5.0.0

Faces of people tagged before are not recognised as the person but instead if
the face is detected it is shown as unknown.

To have a List of recognised faces with suggested Name-Tags to be confirmed by
the user (like in picasa or KPhotoAlbum) would be the best solution I guess.

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