PROBLEM TO BE SOLVED: To provide a non-contact type iris recognition method, including a pretreatment converting an iris image extracted from an eye image of a user into a polar coordinate system, capable of significantly reducing a fault awareness rate and a fault rejection rate. SOLUTION: A boundary of an iris is more accurately detected by utilizing difference of pixel values of a Canny edge detector and the image in the iris image for detecting the boundary of inside and outside of the iris. When the iris image is acquired in a rotated form, the iris image is corrected to a normal form. When the iris image is acquired in a inclined form and the iris image converted into the polar coordinate system has an irregular form, of which lower side is bent, the iris image is normalized in a fixed size to process the iris image including various deformations into the iris image in the accurate form.
NON-CONTACT TYPE IRIS RECOGNITION METHOD DUE TO CORRECTION OF ROTATED IMAGE