Associating cameras with users and objects in a social networking system

摘要

Images uploaded by users of a social networking system are analyzed to determine signatures of cameras used to capture the images. A camera signature comprises features extracted from images that characterize the camera used for capturing the image, for example, faulty pixel positions in the camera and metadata available in files storing the images. Associations between users and cameras are inferred based on actions relating users with the cameras, for example, users uploading images, users being tagged in images captured with a camera, and the like. Associations between users of the social networking system related via cameras are inferred. These associations are used beneficially for the social networking system, for example, for recommending potential connections to a user, recommending events and groups to users, identifying multiple user accounts created by the same user, detecting fraudulent accounts, and determining affinity between users.

主权项

1. A computer-implemented method comprising:
identifying, by a processor, a first user account of a social networking system, the first user account associated with a first set of images; analyzing, by the processor, the first set of images to determine characteristics of a first camera associated with the first set of images; identifying, by the processor, a second user account of the social networking system, the second user account associated with a second set of images; analyzing, by the processor, the second set of images to determine characteristics of a second camera associated with the second set of images; and responsive to determining that the first camera and the second camera are the same, sending a request to perform an action associated with the first user and the second user.