Enlarge (credit: challenge.gov)

The nation’s top-level intelligence office, the Director of National Intelligence, wants to find “the most accurate unconstrained face recognition algorithm.”

A branch of the office, which oversees the nation’s spy agencies, is holding a contest toward that end, with submissions due no later than 2pm ET June 15.

“Have you developed software to identity faces in general web photographs?  Can your software verify that a face in one photograph is the same as in another?” asks a posting on challenge.gov about the Face Recognition Prize Challenge. It continues: