Re: Still cant figure out face recognition under 8.7

Well, at least it's not just me.  Let's hope there's a way to reproduce 
the issue, and hopefully a remedy can be forthcoming, as the face 
recognition, along with the map data, is one of the key items I wanted 
out of DigiKam.  I'm just starting with it, having just gotten it 
working with an external MySQL/MariaDB with 8.7, so I'm ready to go 
forward and make great use of it.

   --Chad


On 7/11/2025 11:31 AM, Charlie Gorichanaz wrote:
> Wow, I actually am seeing the same behavior currently. For the record, 
> Arch linux cache files tell me I upgraded to 8.6.0 June 5, and then to 
> 8.7.0 June 30. I don't think I did any face tagging work since June 30 
> until I tried yesterday.
>
> I previously had around 300 items in my "Unconfirmed" folder according 
> to the number after that word in parentheses, but none were showing up 
> when I clicked on it. I ran a "Recognize faces only" on a large chunk 
> of my albums with the quality slider bumped down from 7 to 6, hoping 
> to catch a lot more faces. The end result changed that tag to say 
> "Unconfirmed (0)". Then I ran a full "Scan all images" process on a 
> section of my library I had not processed yet. It then told me it 
> found 282 faces, and my unknown tag increased to now say "Unknown 
> (3262)", but I still have "Unconfirmed (0)".
>
> So maybe something about this broke in 8.7.0?!
>
> —
> Charlie Gorichanaz
>
>
> On Fri, Jul 11, 2025 at 5:46 AM Chad Bersche <[email protected]> wrote:
>
>     Hi Charlie, et. al
>
>     I have an Unconfirmed tag, but it has zero images in it, even
>     after multiple "recognize faces" runs.
>
>     Once I did the initial scan all images, the Unknown tag had ~6000
>     images in it.  I classified probably ~800 of those naming
>     individuals correctly.  I then re-ran the process as you indicated
>     using "Recognize faces only" on all of my albums.  I watched it as
>     it zoomed thru images, showing faces in the process of those in
>     the image that it'd previously detected.  At the conclusion of the
>     face detection, which took several minutes, it came back stating
>     it scanned over 5,533 images and found ZERO faces.  Nothing moved
>     from Unknown to Unconfirmed.  This is the same outcome every
>     single time I've tried this.
>
>     So, what now?  I've been tempted to try to re-create the training
>     data, but haven't done so yet.
>
>       -- Chad
>
>
>     On 7/10/2025 10:07 PM, Charlie Gorichanaz wrote:
>>     Chad,
>>
>>     Do you have a tag called "Unconfirmed" alongside your "Unknown"
>>     tag? I believe that's where the detected-and-potentially-matched
>>     faces should end up, waiting for you to confirm or reject them.
>>
>>     The doc describes this under the Face recognition section, "To
>>     start this process, go to the workflow tab, select *Recognize
>>     faces only*, and then click *Scan Collection For Faces*. The
>>     process will tag similar *detected* faces with the appropriate
>>     People tag from your tag tree, and the corresponding thumbnail
>>     will disappear from the *Unknown* tag selection. The thumbnail
>>     will appear in the *Unconfirmed* tag section and will be added to
>>     the suggested face tag section."
>>
>>     —
>>     Charlie Gorichanaz
>>
>>
>>     On Thu, Jul 10, 2025 at 7:14 PM Chad A. Bersche
>>     <[email protected]> wrote:
>>
>>         I've been baffled by this as well. I'm running on Windows 11,
>>         DigiKam
>>         8.7, and downloaded all the modules.  I let it grind thru a
>>         bunch of my
>>         libraries overnight.  It resulted in about 6000 images in the
>>         Unknown
>>         category.  I spent a a couple hours assigning names to people
>>         in that
>>         list (sometimes up to 200-300 images).  I still have 5500 in
>>         the Unknown
>>         bucket after classifying several hundred.
>>
>>         After doing that, I went to run the "Recognize faces only" with
>>         Accuracy=7, Search in set to "All Albums" and Tags unchecked.
>>         Then when
>>         I do the "Scan collection for faces" nothing changes, and all
>>         the same
>>         Unknown images stay in the same Unknown bucket.
>>
>>         What am I doing wrong?  I had hoped that tagging a good
>>         number of faces
>>         before doing the recognition would improve its accuracy, but
>>         it seems to
>>         just want me to do all the assignment work, which I kinda
>>         don't want to do.
>>
>>         I'm using an external SQL database, with the database running
>>         on Linux,
>>         because I do use the same image libraries across Windows clients.
>>
>>         Thanks for any help/suggestions!
>>
>>            -- Chad
>>
>>         On 7/8/2025 10:43 PM, Gilles Caulier wrote:
>>         > Hi,
>>         >
>>         > You need to first detect faces on albums before you
>>         recognize them.
>>         > After detecting, manually tag a few faces with names, at
>>         least a few
>>         > ones are enough to teach the AI for an automated recognition.
>>         >
>>         > Finally, run a recognition process and look as AI
>>         recognizes similar
>>         > faces already registered in the model but not yet tagged in the
>>         > database.
>>         >
>>         > The workflow is explained in the online doc :
>>         > https://docs.digikam.org/en/left_sidebar/people_view.html
>>         <https://link.bersche.com/click/JrntK3g7lIuw.vrQMszT3ZBH1.tlPdogxGHMJ/IxL1-iQT/3s/docs.digikam.org/en/left_sidebar/people_view.html>
>>         >
>>         > Best
>>         >
>>         > Gilles Caulier
>>         >
>>         > Le mer. 9 juil. 2025 à 02:08, robert lindsay
>>         > <[email protected]> a écrit :
>>         >> This is under intel mac os and I installed the modules it
>>         asked for in installation. Under face recognition their are
>>         boxes for rebuilding and training data, but i can't find on
>>         to start face recognition on albums
>>