Patent ID: 8437513

Claim:
A computer-implemented method comprising: obtaining two or more images of a subject including a view of an eye, wherein the images collectively include a plurality of focus distances; determining a behavioral metric based on, at least, detected movement of the eye as the eye appears in a plurality of the images, wherein the behavioral metric is a measure of deviation of detected movement and timing from expected movement of the eye; determining a spatial metric based on, at least, a distance from a sensor to a landmark that appears in a plurality of the images each having a different respective focus distance; determining a reflectance metric based on, at least, detected changes in surface glare or specular reflection patterns on a surface of the eye as the eye appears in a plurality of the images, wherein the reflectance metric is a measure of changes in glare or specular reflection patterns on the surface of the eye; determining a score based on, at least, the behavioral, spatial, and reflectance metrics; and rejecting or accepting the two or more images based on the score.