METHODS AND SYSTEMS FOR DETERMINING USER LIVENESS

摘要

A method determining user liveness is provided that includes calculating, by a device, eye openness measures for a frame included in captured authentication data, and storing the eye openness measures in a buffer of the device. Moreover the method includes calculating confidence scores from the eye openness measures stored in the buffer, and detecting an eye blink when a maximum confidence score is greater than a threshold score.

主权项

1. A method for determining detection windows and window positions comprising:
incrementally moving, by a processor, at least one detection window type over a region of interest to occupy different positions within the region of interest, the region of interest being an area of biometric data captured from a user; calculating a feature value for each position; creating a vector from the feature values; determining detection window type, size, and position combinations for calculating authentication feature values during authentication transactions; and determining eye openness measures during authentication transactions with the calculated authentication feature values.