Friday 30 October 2009

Picasa 3.5 face recognition tips

Picasa 3.5 is here!  I realise that it's been here for quite some time....but I'm just jumping on board now.


The top feature of 3.5 (and the reason I upgraded) is face recognition.  Turning on face recognition prompts Picasa to scan your photos and identify faces.  Once the face has been identified, the application will suggest other photos with similar features and auto-tag them appropriately (BTW, the face tagging syncs with your gmail contacts!).


However, after the scan I still had around 3,000 photos that remained for manual tagging.  I.E. Picasa couldn't match them with a previously identified face.  Here's a tip I picked up from cronoklee in the Google Support Forums: 


  • A low suggestion threshold suggests more faces (less accurate matches) for each person.
  • A high suggestion threshold suggests only faces Picasa is pretty certain about.   
  • A low cluster threshold groups more faces together on the naming page. (but obviously may get some wrong)
  • A high cluster threshold means that only very similar photos are grouped together on the naming page.

You can access these options from the menu using Tools > Options > Name Tags (tab)

3 comments:

Messenger said...

10 Years later i find this post, i still use picasa daily as i do not find this feature in any other (offline) software. If there was any new kind of software like this i would like to know!

Unknown said...

Yes, I have just started using TagThatPhoto, which I got through a daily giveaway otherwise it has a months trial, but it is brilliant, much quicker and easier to use than Picasa. It correctly recognises faces (as the right person) 99% of the time, ie you seldon need to tag a person more than once, very different to Picasa, which is really laborious in comparison.

Messenger said...

Spam..

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