Patent ID: 8989431
Filing Date: 2015-03-24
Classification: G06K,G06Q,G06T

Abstract:
1. A method of creating an ad hoc association between users, comprising: receiving a first digital image of at least a portion of a first version of a first document, the first digital image associated with a first user and including metadata describing a first time of capture of the first digital image and a first location of the first user at the first time of capture of the first digital image; extracting a first document recognition feature from the first digital image; receiving a second digital image of at least a portion of a second version of the first document, the second digital image associated with a second user and including metadata describing a second time of capture of the second digital image and a second location of the second user at the second time of capture of the second digital image; extracting a second document recognition feature from the second digital image; creating the ad hoc association between the first user and the second user based on the first document recognition feature associated with the first version of the first document being the same as or similar to the second document recognition feature associated with the second version of the first document; strengthening a tie between the first user and the second user resulting from the ad hoc association based at least in part on a distance score and a timing score, the distance score indicating a proximity between the first location and the second location and the timing score indicating a proximity between the first time of capture and the second time of capture; and responsive to the tie being strengthened, authorizing the second user to access information relevant to at least the first portion of the first document that is added by the first user.