[Bug 262585] New: A single face is detected twice

[Milan Knizek]

https://bugs.kde.org/show_bug.cgi?id=262585

           Summary: A single face is detected twice
           Product: digikam
           Version: 2.0.0
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Face Detection
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           2.0.0 (using KDE 4.5.4)
OS:                Linux

After scan of collection, a face is shown twice in /People/Unknown. See the
attachment - the "face boxes" overlap.

Reproducible: Always



Expected Results:  
Each face should be detected only once - that is the "face boxes" should never
overlap.

See the attached screenshot.

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[Milan Knizek]

https://bugs.kde.org/show_bug.cgi?id=262585





--- Comment #1 from Milan Knizek <knizek volny cz>  2011-01-08 21:11:32 ---
Created an attachment (id=55746)
 --> (http://bugs.kde.org/attachment.cgi?id=55746)
Multiple detection of a single face

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[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=262585





--- Comment #2 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-01-11 13:52:02 ---
We do have overlap detection, only though when one face is already set and a
new one is added. For faces added in one run, there is overlap detection in
libface IIRC.
These do overlap, but not so much. The problem: Which face is the right one?
Impossible to know! If the lower frame, probably fooled by the moustache, is
added first, we'll have made a mistake.

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[Milan Knizek]

https://bugs.kde.org/show_bug.cgi?id=262585





--- Comment #3 from Milan Knizek <knizek volny cz>  2011-01-22 18:42:01 ---
I get your point, Marcel. Then it is a question, what is easier from the user's
viewpoint: (a) digiKam keeps both detected faces (though overlapped) and the
user manually removes one of them as a false positive or (b) digiKam chooses
the best fit and in case it is the wrong one, the user moves the frame to
better fit the face.

I would probably opt for the latter solution, since there are chances that
digiKam did the right thing and user does not have to interact at all.

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[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=262585





--- Comment #4 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-01-24 16:03:29 ---
I need to check if we can get "scoring" information from libface. For the
normal detection, there is no such information; but maybe from the verification
state.

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=262585


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]




--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2011-12-14 13:53:57 ---
Milan,

it still valid using digiKam 2.4 ?

Gilles Caulier

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[Milan Knizek]

https://bugs.kde.org/show_bug.cgi?id=262585


Milan Knizek <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED




--- Comment #6 from Milan Knizek <knizek volny cz>  2011-12-16 19:09:34 ---
Thanks for pushing to re-test, the bug does not appear anymore with today's GIT
(on the same test album). (It still existed in 2.3.)

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=262585

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |2.5.0

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[hidden email] changed:

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

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