问题
Is there a standard way to read/write face-tags from/into photo meta-data?
Can I use it to import face-tagging information from popular photo organizers?
回答1:
Yes.
Metadata Working Group (i.e. Adobe, Microsoft, Sony, Nokia, and others) has developed a standard extension of XMP to do that, see Image Region Metadata Section 5.9 in the Metadata Working Group Spec.
Another extension of XMP has been done by Microsoft for Windows Live Photo Gallery and is supported by .NET API. See People Tagging Overview.
Seems like Google Picasa 3.9 reads face tagging from both XMP extensions, but writes only to the one of MWG.
See more:
What is the standard for storing face tags and caption?
Picasa versus Windows Live Photo Gallery | Geoff Coupe's Blog
Picasa 3.9 bugs&questions (photo order upload, nonG+ links and account signing, sore name tags in photo
Reading “People Tags” inserted by Windows Live Photo Gallery
来源：https://stackoverflow.com/questions/12115998/face-tagging-information-and-photo-metadata