Biometric recognition is an automatic identification method which is based on unique features or characteristics possessed by human beings and Iris recognition has proved itself as one of the most reliable biometric methods available owing to the accuracy provided by its unique epigenetic patterns. The main steps in any iris recognition system are image acquisition, iris segmentation, iris norm...

Biometric systems that use a single biometric trait have to contend with noisy data, restricted degrees of freedom, failureto-enroll problems, spoof attacks, and unacceptable error rates. Multibiometric systems that use multiple traits of an individual for authentication, alleviate some of these problems while improving verification performance. We demonstrate that the performance of multibiome...

One of the critical steps in designing a secure biometric system is protecting the templates of the users that are stored either in a central database or on smart cards. If a biometric template is compromised, it leads to serious security and privacy threats because unlike passwords, it is not possible for a legitimate user to revoke his biometric identifiers and switch to another set of uncomp...

Authenticating the identity of users is a critical issue in information security. Biometrics is known for recognizing users based on their physiological or behavioral traits as identifiers and these cannot be easily stolen unlike passwords or ID cards. Biometrics could be employed as the primary means for authentication, called user identification, as well as a complementary (secondary) method ...

Cancelable biometrics is a promising template protection scheme which relies on encoding the raw biometric data using non-invertible transformation function. Existing cancelable biometrics schemes ensure recoverability of compromised templates as well as users’ privacy. However, these schemes cannot resist pre-image attacks. In this article, a pre-image resistant cancelable biometrics scheme is...

Combination functions typically used in biometric identification systems consider as input parameters only the matching scores related to a single person in order to derive a combined score for that person. We present a systematic framework to use all scores received by all persons as input to a single combination function when sufficient training data is available. More fundamentally, we ident...

In biometrics, a human being needs to be identified based on some characteristic physiological parameters. Often this recognition is part of some security system. Secure storage of reference data (i.e., user templates) of individuals is a key concern. It is undesirable that a dishonest verifier can misuse parameters that he obtains before or during a recognition process. We propose a method tha...

This study was carried out to evaluate the effects of nano selenium (nano-Se) and conjugated linoleic acid (CLA) on performance, biometric and blood parametersand selenoprotein W1 (SEPW1) and lipid gene expression in male Moghani lambs. Thirty male Moghani lambs, 3-months-old and weighing 30 ± 0.25 kg, were used in completely randomized design in a 2 × 3 factorial arrangement with dietary suppl...

PURPOSE To compare, clinically and biometrically, affected and fellow acute primary angle-closure (APAC) eyes and glaucomatous eyes with narrow angle (NA). METHODS Comparative case series; 30 patients with APAC and 27 glaucomatous patients with NA were evaluated. Keratometry (K), central corneal thickness (CCT), lens thickness (LT), axial length (AL) and anterior chamber depth (ACD) were meas...