How can I force Picasa to rescan faces?

London 2010 Basketball arena

Picasa is Google’s free photo management application.  It appears to be an experimental project rather than a flagship product, but its extremely useful and versatile.  In particular, it allows management of photos without making a copy of each photograph inside the application.  This was the feature that prompted me to move my photo management into Picasa from Apple’s iPhoto (now discontinued) and why I have not moved on to its new ‘Photos’ offering.

Like those other programmes, Picasa has a powerful facial recognition feature.  Set it loose on your photos and it will recognise faces within them.  The software if powerful enough to identify blurred, grainy faces as well as in-focus portraits.  If you give a face a name, it will identify other similar faces and suggest that they are the same person.  I began tagging all my photographs like this.  Continue reading “How can I force Picasa to rescan faces?”