Patent ID: 9228920
Filing Date: 2016-01-05
CPC Classification: G01M,G06K

Claim Text:
1. A method for estimating optical power of corrective lenses in a pair of eyeglasses worn by a spectator, the method comprising: identifying a position of an iris of each eye of a spectator in first and second consecutive images of the spectator's face, the first consecutive image being acquired with the pair of eyeglasses in front of the eyes, and the second consecutive image being acquired without the pair of eyeglasses in front of the eyes, comparing a size of each imaged iris in the first consecutive image with a size of each imaged iris in the second consecutive image; determining the optical power of the corrective lenses in the pair of eyeglasses based on the comparison and an evaluated size magnification or size reduction between each imaged iris of the first and second consecutive images.