VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University59510.18287/2541-7533-2008-0-2(15)-235-239UnknownIris boundary detection using hough transformKorepanovA. O.vest@ssau.ruImage Processing Systems Institute of the RAS180620087223523902062014Copyright © 2015, VESTNIK of the Samara State Aerospace University2015<p>This work deals with method for localizing and estimating the iris characteristics in biometric eye images. A method is proposed for estimating boundaries by the second-order curves, which is based on a discrete Hough transform modification. An algorithm for iris localization in the diagnostic iris images is developed and implemented. The results of investigation of the iris characteristics estimation algorithm on natural diagnostic images are discussed.</p>Integral geometrydiscrete Hough transformobject detectionirisstochastic searchИнтегральная геометриядискретное преобразование Хоуобнаружение объектоврадужная оболочкастохастический поиск