Is 8.6.0 face recognition supposed to handle animals?

[corrado.topi at hausoos.com]

Dear all,

I am wondering whether we could make it trainable on other categories,  
and whether they could be used to identify other specific categories  
of objects (flowers, cacti, insect families, etc.)

Kind regards

Quoting Frédéric Da Vitoria <davito9w at free.fr>:

> Hello Michael,
>
> I decreased the slider to 5 and ran the scanner. It found half a  
> dozen more dogs, no cats, and a few birds. And quite a number of  
> completely irrelevant areas, just as you predicted. All in all, I  
> consider that it is still worth it because it also recovered (and  
> sometimes identified) hundreds of faces, so I'll leave this setting  
> at this level.
>
> BTW, I am amazed by how it manages to find faces in areas where only  
> an ear or an eye are visible. This makes me think that it identifies  
> animals not because they look like humans (the dogs which were  
> identified did not look like humans, and of course neither did the  
> birds) but that a few animal samples were incuded in the training. I  
> guess no cats were included, which would explain why it did not find  
> any, although cat faces are closer to human faces than dogs or birds.
>
> Afterword: I tried to check on a subset of my pictures if decreasing  
> detection accuracy would find cats. In the "Search in" tab, I  
> checked some of the cat tags, set the accuracy to 4 and hit "Scan  
> collection for faces". dK answered "Items scanned for faces: 0" and  
> "Face found: 0". I don't understand "Items scanned for faces: 0" as  
> the 5 tags I selected amount to more than 100 photos.
>
> Regards,
>
> -- 
> Frédéric Da Vitoria
>
>
> On 26/03/2025 19:21, Michael Miller wrote:
>> Hello everyone,
>> Face detection is optimized for human faces. It will occasionally  
>> detect animal faces. You can try setting the detection accuracy  
>> slider to 4 or 5 to see if it will detect more animal faces, but  
>> this will also increase the number of false positives.
>>
>> Cheers,
>> Mike
>>
>>
>>
>> Sent from my T-Mobile 5G Device
>>
>>
>>
>> -------- Original message --------
>> From: Frédéric Da Vitoria <davito9w at free.fr>
>> Date: 3/26/25 10:23 AM (GMT-08:00)
>> To: digikam-users at kde.org
>> Subject: Re: Is 8.6.0 face recognition supposed to handle animals?
>>
>> Thank you for your answer.
>>
>> I just checked, it detected only 2 dog faces, and it missed  
>> hundreds of others, including more than 300 pictures of the 2 dogs  
>> it just detected. So maybe face recognition works, but face  
>> detection isn't very efficient? Anyhow, I'm going to tell him those  
>> dog's names and hope it will find other occurrences.
>>
>> Regards,
>>
>> On 26/03/2025 18:01, Gilles Caulier wrote:
>>> Hi,
>>>
>>> Here my dog's face is also detected and recognized if tagged  
>>> previously. So, I think the model has been taught with domestic  
>>> animals, at least. I don't test with cats anyways (no cat at home  
>>> (:-)))...
>>>
>>> Best
>>>
>>> Gilles Caulier
>>>
>>> Le mer. 26 mars 2025 à 17:33, Frédéric Da Vitoria  
>>> <davito9w at free.fr> a écrit :
>>>
>>>    Hello,
>>>
>>>    I updated to 8.6.0. In the unknown faces folder, I found 2 dogs.
>>>    Should
>>>    I tell dK to ignore them or is there any chance the new face
>>>    recognition
>>>    engine will recognise those dogs in the future?
>>>



-- 

Kind Regards. Corrado
-- 
Dr. Corrado Topi PhD (current working time zone: CET)

--
DOTT. CORRADO TOPI
Strategic research for sustainable resilient development
VAT REG: IT15891141002
Via Barasso 34
00126 Roma, Italia
Email PEC: corrado.topi at pec.net
Codice destinatario fattura elettronica: KRRH6B9
Telephone: + 39 324 928 79 83

Stockholm Environment Institute Affiliate, Asia Center (Bangkok, Thailand)
Visiting Research Fellow, The York Management School, University of York