I face-tagged a zillion faces in desktop Picasa while "Store Name Tags in Photo" was unchecked. Now I have checked it and I want it to write all those tags back to the EXIF. How?
Alternately: I just want to extract a map of filename → face-names, and then I can take care of business myself. Where's the API?
Tried faceextract.pl?: github.com/gregersn/faceextract
That does the trick, thanks!
I'm confused. Did the first reply to one of your lazyweb posts actually solved your problem?
Does this mean that iphoto will also be able to read these tags appropriately?
It writes them into the EXIF data in the image files themselves, so as long as you can convince iPhoto to ignore its cache and re-read the files, yes.
Not exactly an API, but seems to get the job done:
http://www.klick.com/health/news/blog/retrieving-face-tag-data-from-the-picasa-web-api/
I said desktop, not web.