Categories: Picasa for Windows :

Picasa seems to have stopped actively recognizing faces

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Picasa seems to have stopped actively recognizing faces rschadle 12/13/09 8:07 AM
I downloaded Picasa 3.6 to help me organize my pictures with the face recognition capability.  After importing all pictures on my computer (which I was not thrilled with because it also grabbed all of my album art from iTunes), it was actively suggesting faces to match with people that I started.  After about 4,000 of the 15,500 faces were "matched", Picasa stopped actively making suggestions.  

I've open and closed the program several times (seemed to work initially) and I even rebooted my computer (seemed to work a bit at first), but now I have to name by hand the other 11,000 faces.

I'm afraid that I might just have to give up on this process and give Picasa a poor rating.  Is there anything that can get Picasa to try to match faces to people?
Re: Picasa seems to have stopped actively recognizing faces Arvils 12/13/09 10:38 AM
I have exactly the same problem. (Posted a question in this forum a couple of days ago but did not get any reply.) Picasa is installed for the first time on that computer, OS = Vista Home Premium. I have earlier tried Picasa 3.5 on another PC with WinXP and did not observe anything like that.

I tried to play with settings by the "Folder Manager" window, though it seemed to me that that everything were correct. It helped to restart face scanning for a short time, then it stopped again.

In fact I cannot get even to manual naming of faces, because Picasa has not scanned all pictures files yet (no ".picasa.ini" files found in picture folders).
Re: Picasa seems to have stopped actively recognizing faces Onion Zwiebel 12/13/09 12:39 PM
Under Tools > Options > Name Tags, what thresholds are you using? Try moving it higher. 
Re: Picasa seems to have stopped actively recognizing faces Arvils 12/13/09 1:18 PM
Threshold settings should affect if similar faces are accounted as one person, and maybe how human-like the objects should look to be recognized as faces, but here the situation is different. In some folders paintings or sculptures are recognized as faces (why not, if they look natural) but other folders are not scanned at all. Just not scanned, indication is that the ".picasa.ini" fiole never appears. And I am completly sure that face scanning IS ALLOWED for those in the folder manager.

An off-topic - I have one picture where Picasa recognized a cat's face as a face. So the threshold is not too high.
Re: Picasa seems to have stopped actively recognizing faces SirRuss 12/26/09 1:11 AM
I have the same problem. It has recognized a few thousand, but the last 11000 has been useless!
Re: Picasa seems to have stopped actively recognizing faces rschadle 12/27/09 9:51 AM
Changing the threshold to a lower setting captured many more faces, but also dramatically increased the false positives.  I basically geeked-out and eventually sorted by hand
Re: Picasa seems to have stopped actively recognizing faces Haddock 1/2/10 4:21 AM
What's important to note here is that the problem is not of threshold. The pictures it is unable to recognize are very very close to many of the other pictures of that person, in many cases a front face shot. It would have recognized these in the earlier part of is scan without a problem. Some of the pictures are from the same series ie. clicked one after the other. So the algorithm somehow starts deteriorating as data data increases, instead of improving! I am facing the same problem, of the 20000+ photos, did a great job with the first 5-6000, then just died.
Re: Picasa seems to have stopped actively recognizing faces CarmenR3 8/26/10 8:28 PM
I'm having the same problem and agree with Haddock.  It recognized faces and suggested them faster than I could keep up with.  Now that hundreds are tagged (okay, thousands), it no longer recognizes faces/photos that are identical to ones I've already tagged.  Sad day.  Hope they think of a fix for it.
Re: Picasa seems to have stopped actively recognizing faces petrsvoboda 8/27/10 2:48 AM
I have 92.126 "Unnamed" :-(  ... Detected was cca 20.000. Yes, this unnamed photos are too very close to many of the others pictures... Something is wrong... 15.000 i make now manually...
Re: Picasa seems to have stopped actively recognizing faces Arvils 8/27/10 4:02 AM
I have somewhat between 20000 and 30000 pictures on my hard drive. Picasa 3.6 seemed not to be able to handle such number of files. Speed to find new faces dropped down almost to zero, even if clearly could see that not all pictures are processed. Quality of recognizing faces also falled down dramatically, making this program nearly useless for face recognition.

After upgrading to 3.8 I could see an improvement - again it started to find more faces, and recognition quality was again OK. Let's see what I can say after some weeks, though I do not await very much - I guess my number of pictures is still over the capability limits for Picasa.
Re: Picasa seems to have stopped actively recognizing faces petrsvoboda 8/27/10 1:57 PM
my others observations Picasa 3.8 (my 160.000 digital photos - others, with/without faces):
recognized option volume 85 (default): named 25.000 faces  (unnamed 90.000)
recognized option volume 80: named other +10.000 faces(unnamed 80.000), fakes about 10 %
recognized option volume 75: named other +4.000 faces, BUT FAKES OVER 50 % = USELESS...

when changing back to higher accuracy, the number of detected again reduced (well..)
I have so much work :-)