[digikam] [Bug 338785] New: Digikam face detection finds no faces

[Jens B. Benecke]

https://bugs.kde.org/show_bug.cgi?id=338785

            Bug ID: 338785
           Summary: Digikam face detection finds no faces
           Product: digikam
           Version: 4.2.0
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Face Management
          Assignee: [hidden email]
          Reporter: [hidden email]

I installed Digikam 4.2.0 on Ubuntu 14.04 (PPA) and also compiled it by myself
using MacPorts on OS X. On both systems, using a fresh install, with different
libraries, when I select the face detection tool, no matter which options I
select, it will finish in 0:00 seconds and find no faces at all.

Reproducible: Always

Steps to Reproduce:
1. Install digikam. During installation, select a folder as album root which
contains photos of several people.
2. Select faces tab.
3. Search for faces (deleting and recreating any previous face database).
4. Click OK.

Actual Results:  
No faces are found.

Expected Results:  
Faces should be detected and displayed.

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338785

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WAITINGFORINFO
                 CC|                            |[hidden email]
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #1 from Gilles Caulier <[hidden email]> ---
Jens,

I use MACOSX here with macports, and all work fine about face detection.

Sound like something is missing on your computer from OpenCV library.

Please turn on libkface debug space using kdebugdialog as explained here :

https://www.digikam.org/contrib

...and run digiKam from a console to get debug trace when you run face
detection. Report trace here...

Gilles Caulier

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[Jens B. Benecke]

https://bugs.kde.org/show_bug.cgi?id=338785

--- Comment #2 from Jens B. Benecke <[hidden email]> ---
I did as you said:
- turned on KFACE debug (51005 or something)
- started digicam from a console
- went to the faces sidebar
- clicked on "Search for faces"
- selected "detect and recognize" and "delete old training data" in the options
- clicked OK
- At once I got a small popup window saying the operation is completed and took
00:00:00 seconds.
- Also in the "My Tags" sidebar below the face detection button there are no
tags, although my photos have lots of tags already.

Here is the console output. I don't see anything suspicious except for
" digikam(1098)/KIPI (general): Current image collection is not valid.  ". What
does that mean?

jens@linuxkiste:~$ digikam
Object::connect: No such signal
org::freedesktop::UPower::DeviceAdded(QDBusObjectPath)
Object::connect: No such signal
org::freedesktop::UPower::DeviceRemoved(QDBusObjectPath)
QSqlDatabasePrivate::removeDatabase: connection 'ConnectionTest' is still in
use, all queries will cease to work.
digikam(1098)/KFACE KFaceIface::SchemaUpdater::startUpdates: Have a database
structure version  "2"
digikam(1098)/KIPI (general): Current image collection is not valid.
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core): Untreated temporary search type  0
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.
digikam(1098)/KIPI (general): Current image collection is not valid.
digikam(1098)/digikam (core) Digikam::ThumbnailCreator::createThumbnail: Cannot
create thumbnail for  "/run/user/1000/gvfs/smb-share:server=..../2014-06-09
IMG_4756.mp4"
digikam(1098)/digikam (core) Digikam::ThumbnailCreator::load: Thumbnail is null
for  "/run/user/1000/gvfs/smb-share:server=..../2014-06-09 IMG_4756.mp4"
digikam(1098)/digikam (core) Digikam::ThumbnailCreator::createThumbnail: Cannot
create thumbnail for  "/run/user/1000/gvfs/smb-share:server=..../2014-09-06
P1110766.mp4"
digikam(1098)/digikam (core) Digikam::ThumbnailCreator::load: Thumbnail is null
for  "/run/user/1000/gvfs/smb-share:server=..../2014-09-06 P1110766.mp4"
.....

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338785

--- Comment #3 from Gilles Caulier <[hidden email]> ---
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.

==> your database is locked. Why ? Did you have 2 digiKam instance started. Did
you have anther process which open digiKam DB file before digiKam instance
(there are few DLNA  tool which do it automatically).

digikam(1098)/digikam (core) Digikam::ThumbnailCreator::load: Thumbnail is null
for  "/run/user/1000/gvfs/smb-share:server=..../2014-06-09 IMG_4756.mp4"

==> you use a shared collection through Samba FS. Please try first with a local
collection

" digikam(1098)/KIPI (general): Current image collection is not valid.  ". What
does that mean?

==> Don't care. It's not relevant of face management.

Gilles Caulier

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[Jens B. Benecke]

https://bugs.kde.org/show_bug.cgi?id=338785

--- Comment #4 from Jens B. Benecke <[hidden email]> ---
I just installed digikam using the Ubuntu 14.04 PPA, no additional tools that
use the digikam db.

I also tried with local pictures (actually I have a local images directory
added as album in addition to the remote one), same result.

What else can I try?

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338785

--- Comment #5 from Gilles Caulier <[hidden email]> ---
The face detection is relevant of OPenCV library. Are you sure that all
components are installed on your computer ?

In your first trace i can see :

digikam(1098)/digikam (core)
Digikam::DatabaseCoreBackendPrivate::checkRetrySQLiteLockError: Detected locked
database file. There is an active transaction. Waited but giving up now.

It's clear here that database file is locked. By what ? I don't know...

I remember in a past, an application which share through UPNP digiKam
collection on the network. This stand alone application (a service, i sdon't
remeber the name) open digiKam DB file. In this case digiKam cannot write
something in... File is in read only.

Gilles Caulier

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[Gilles Caulier-4]

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--- Comment #6 from Gilles Caulier <[hidden email]> ---
Jens,

Look if this file is not relevant of this bug

https://bugs.kde.org/show_bug.cgi?id=337507

... where Pino Toscano has found a problem with OpenCV Haar cascade files path.

Gilles Caulier

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338785

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Digikam face detection      |digiKam face detection
                   |finds no faces              |finds no faces

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[Jens B. Benecke]

https://bugs.kde.org/show_bug.cgi?id=338785

--- Comment #7 from Jens B. Benecke <[hidden email]> ---
Hi,
I just installed KDE 4.14 with digikam 4.5.0 and still have the same problem.
During face detection there is no debug output of KFACE (51005) at all. I have
used a local library (some local images) and the database is not locked (no
lock error message).

I installed "opencv-data" to get the haarcascade files, symlinked the
haarcascade directory into "$HOME/.kde/share/apps/libkface/" and restarted
digikam with debugging for "digikam" enabled too. When running the face
detection I get this in the console:

digikam(21591)/digikam (core) Digikam::FaceDetector::slotContinueAlbumListing:
false true
digikam(21591)/digikam (core) Digikam::FacePipeline::Private::checkFinished:
Check for finish:  0 packages, 0 infos to filter, hasFinished() true
digikam(21591)/digikam (core) Digikam::FaceDetector::slotContinueAlbumListing:
false false
digikam(21591)/digikam (core) Digikam::FaceDetector::slotContinueAlbumListing:
false true
digikam(21591)/digikam (core) Digikam::FacePipeline::Private::checkFinished:
Check for finish:  0 packages, 0 infos to filter, hasFinished() true
digikam(21591)/digikam (core) Digikam::FaceDetector::slotContinueAlbumListing:
false false
digikam(21591)/digikam (core) Digikam::FaceDetector::slotContinueAlbumListing:
false true
digikam(21591)/digikam (core) Digikam::FacePipeline::Private::checkFinished:
Check for finish:  0 packages, 0 infos to filter, hasFinished() true
digikam(21591)/digikam (core) Digikam::FaceDetector::slotContinueAlbumListing:
false false
digikam(21591)/digikam (core) Digikam::FaceDetector::slotContinueAlbumListing:
false true

Still no faces are found and the process finishes in one second.
I'm out of ideas. Anything I missed?

Thanks!

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338785

--- Comment #8 from Gilles Caulier <[hidden email]> ---
Go to help/Components Info dialog to check :

- libkface version.
- OpenCV version.

Libkface is not integrated with KDEGraphics/libs (it's done for next releases)
I seen libkface is compiled and installed as separated package by default on
my distro (Mageia). This version is an older one, and do not include all recent
fixes done since recent digiKam release (4.3, 4.4, 4.5).

Gilles Caulier

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[Jens B. Benecke]

https://bugs.kde.org/show_bug.cgi?id=338785

--- Comment #9 from Jens B. Benecke <[hidden email]> ---
libkface according to dpkg is "1.0-digikam4.5.0-trusty-ppa1kde414" (from
digikam 4.5 Ubuntu PPA).
libkface according to Digikam is "3.5.0" (is this the API version?)

libopencv according to dpkg is 2.4.8+dfsg1-2ubuntu1.
libopencv according to Digikam is 2.4.9 (probably updated by ubuntu).

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--- Comment #10 from Jens B. Benecke <[hidden email]> ---
this is the PPA: https://launchpad.net/~philip5/+archive/ubuntu/extra

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Jens B. Benecke <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |VERIFIED

--- Comment #11 from Jens B. Benecke <[hidden email]> ---
This was solved by reinstalling Ubuntu (without KDE) and installing the
`libopencv-photo2.4` package which provides `libopencv_photo.so`. After this,
faces on **local** pictures are detected. Unfortunately, the digikam package
does not depend on `libopencv-photo2.4`, so this wasn't solved automatically.

However, faces on remote albums (SMB share in my case) aren't detected although
the share is mounted and the images are accessible. Is this intentional, not
yet implemented or can it also be considered a bug?

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[Jens B. Benecke]

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--- Comment #12 from Jens B. Benecke <[hidden email]> ---
PS: I'm on digikam 4.6, in the mean time.

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |4.7.0
             Status|VERIFIED                    |RESOLVED
         Resolution|WAITINGFORINFO              |FIXED

--- Comment #13 from Gilles Caulier <[hidden email]> ---
>This was solved by reinstalling Ubuntu (without KDE) and installing the `libopencv->photo2.4` package which provides `libopencv_photo.so`. After this, faces on **local** >pictures are detected. Unfortunately, the digikam package does not depend on >`libopencv-photo2.4`, so this wasn't solved automatically.

This is typically a packager problem, not a digiKam/libkface problem. Please
report this problem to your distro team.

Note : OpenCV is a big puzzle (weird puzzle). Packager must take a care about
packaging a linking rules set on client system.

>However, faces on remote albums (SMB share in my case) aren't detected although the >share is mounted and the images are accessible. Is this intentional, not yet implemented >or can it also be considered a bug?

We have never tested with remote collection through the network.

If device is mounted in local on your system with good access right, this must
work as expected.

Gilles Caulier

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--- Comment #14 from Jens B. Benecke <[hidden email]> ---
> We have never tested with remote collection through the network.

Please do. It is weird, sometimes it works, sometimes no images are found. Also
there are strange delays when viewing images (sometimes digikam freezes
completely for 20 seconds with no network activity).

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Jens B. Benecke <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|4.2.0                       |4.6.0

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[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Faces-Management            |Faces-Detection

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