Still cant figure out face recognition under 8.7
Chad Bersche
chad at bersche.com
Fri Jul 11 18:42:00 BST 2025
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 <chad at bersche.com> 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
>> <chad at bersche.com> 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
>> > <robert.lindsay at gmail.com> 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
>>
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