[digiKam-users] Should i add face "zone" when person are not in front and/or in bad quality ?

[nonobio]

Hi,

When there are person which aren't in front and/or are in bad quality,
should i add a zone or just add a the person tag but without zone ?

I think the "reconize" face will work better if i only add
zone when face is in front and/or is in "good" quality, am i right ?

What do you recommend ?

Thanks



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[Gilles Caulier-4]

Hi,

yes it is. The face recognition algorithm will use face region and tag name assigned to perform face similarity searches. For a functionnal face recognition, at least 6 similar faces must be tagged manually, else the algorithm is not able to recognize people.

If you tags non face region as face region, the recognition will produce face results.

Gilles Caulier

2018-03-12 10:06 GMT+01:00 nonobio <[hidden email]>:

Hi,

When there are person which aren't in front; when face aren't visible,
should i add a zone or just add a the person tag but without zone ?

I ask because i think the "reconize" face will work better if i only add
zone when face is "good".

What do you recommend ?

Thanks



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[nonobio]

Ok, so what i'm doing is good ? : Only add person tag (whitout zone) when i
don't see face in front OR the image is in bad quality, can you confirm ?

Thanks



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[Gilles Caulier-4]

Yes it sound fine. A simple text tags as face keywords is the right way. 

Gilles caulier

Le lun. 12 mars 2018 à 11:15, nonobio <[hidden email]> a écrit :

Ok, so what i'm doing is good ? : Only add person tag (whitout zone) when i
don't see face in front OR the image is in bad quality, can you confirm ?

Thanks



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[nonobio]

Thanks.

Have a nice day :)



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[nonobio]

Hello,

I have the same question, but now for person wearing masks (covid)...

If only eyes and top of the head is visible, should i add a face "zone" or
should i just only add person tag (whitout zone) to not disturb the face
analyze learning system ?

Thanks



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[woenx]

If the face region has been suggested by digikam, I tend to add the name of
the person, even if that person is sideways or wearing a mask. Although I'm
pretty sure that will mess with the algorithm.

Maybe digikam's algorithm could automatically rate faces by quality and only
use the best ones (non-blurry, non-sideways, not wearing a mask..) for
recognition?



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[nonobio]

Hi,

Thanks for your reply woenx.

What do you recommend Gilles or Maik ?

For now, i continue to not add a face "zone" for these cases, but maybe i
should ?



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