US Patent 10162999 Face recognition based on spatial and temporal proximity

In one embodiment, a method includes accessing an image file associated with a first user of a communication system and detecting a face in an image corresponding to the image file. The method also includes accessing an event database associated with the communication system, the event database containing one or more events, each being associated with the first user and one or more second users of the communication system. The method also includes determining one or more candidates among the second users to be matched to the face, where each candidate is associated with an event in the communication system, and where a time associated with the image is in temporal proximity to a time associated with the event.