I Wonder How the iPhone Object/Face Recognition Will Work?

One of the interesting features introduced in iPhoto 09 for the Mac is its “Faces” feature that can recognize face shapes, lets you associate names with faces, and is able determine that same face again in a different photo. It isn’t perfect though. For example, I’ve read anecdotal evidence that iPhoto 09’s Faces features can recognize cat faces but not dogs. And, I can verify that it can’t recognize at least one rabbit’s face in various photos.