Patent ID: 9075975
Filing Date: 2015-07-07
Classification: G06F,G06K,G06Q,H04L,H04N

Abstract:
1. A method of authenticating a presence of an online user, the method comprising: sending control signals from a server to a user device, wherein the user device includes: receiving at the server video imagery transmitted by the user device, wherein the video imagery is captured by the camera while the source of illumination is being modulated in accordance with the control signals during authentication of the online user; in a first analyzing step, analyzing the received video imagery to detect frames that show changes in reflected illumination in temporal correspondence with the control signals; in a second analyzing step, determining a spatial arrangement of the brightness changes in reflected illumination in the detected frames and determining a degree of consistency of the spatial arrangement of the brightness changes in reflected illumination with a spatial arrangement of brightness changes that would be expected from a three-dimensional shape comprising major facial features of a human face present during authentication; using results of the first analyzing step to determine a first likelihood that the received video imagery was captured from an object viewed by the camera in real time, wherein the determination of the first likelihood is independent of video imagery captured during enrollment of the online user; using results of the second analyzing step to determine a second likelihood that the received video imagery captured a human face present during authentication, wherein determination of the second likelihood is independent of movement of the online user in response to the modulation of the illumination; and generating an authentication response based on the first likelihood and the second likelihood.