Eye image obtaining method, iris recognizing method, and system using the same

摘要

A method of obtaining an eye image includes a) initializing a photographing unit; b) setting a reference image having a predetermined size in a central portion of an image input through a lens of the photographing unit; c) setting an allowable range of the reference image; d) matching an eye of a user with a focus axis of the photographing unit when the image input through the photographing unit deviates from the allowable range of the reference image; e) photographing the image input through the photographing unit; and f) detecting the eye image among the photographed images; and g) determining whether the eye image is a focused image.