AIM To study accommodation in relation to different refractive errors, amblyopia and to measure the anatomical changes in the accommodating eye MATERIALS AND METHODS We studied the amplitude of accommodation (AA) in 150 patients in the age group 11 ± 30 years which included emmetropes, myopes, hypermetropes and hypermetropic amblyopes using the Royal Air Force (RAF) rule. The anterior chamber...

The authors present a secure facial recognition system. The biometric data are transformed to the cancellable domain using high-order polynomial functions and co-occurrence matrices. The proposed method has provided both high-recognition accuracy and biometric data protection. Protection of data relies on the polynomial functions, where the new reissued cancellable biometric can be obtained by ...

In this paper we present improved performance evaluation parameters like Accuracy, FAR, FRR and EER for thumbprint (Uni-modal) biometric system using SURF approach. Here, we also compared the proposed approach with existing methods e.g. STFT, SIFT etc.

Biometrics enables convenient authentication based on a person’s physical or behavioral characteristics. In comparison with knowledgeor token-based methods, it links an identity directly to its owner. Furthermore, it can not be forgotten or handed over easily. As biometric techniques have become more and more efficient and accurate, they are widely used in numerous areas. Among the most common ...

Combination functions typically used in biometric identification systems consider as input parameters only those matching scores which are related to a single person in order to derive a combined score for that person. We discuss how such methods can be extended to utilize the matching scores corresponding to all persons. The proposed combination methods account for dependencies between scores ...

Biometric systems can be used for the identification or verification of humans based on their physiological or behavioral features. In these systems the biometric characteristics such as fingerprints, palm-print, iris or speech can be recorded and are compared with the samples for the identification or verification. Multimodal biometrics is more accurate and solves spoof attacks than the single...

Research using biometric data relies on consistent measurements within, and often among, observers. However, research into the relative importance of intraand interobserver variability is limited. More importantly, the influence of biometric variability on accurate quantification of biometric-based condition indices has not been analysed: it is unclear whether multiple errors become magnified o...

Identification systems have become biometric-based, especially with the increase in performance rates of machine learning methods. Biometric identification offer a high level security by using reliable, difficult-to-change parameters. In this thesis, biometric system is proposed dorsal hand vein patterns. The relevant has been tested on sample dataset literature. number data were increased addi...

Drawing on the results of an acoustic biometric system based on a MSE classifier, a new biometric system has been implemented. This new system preprocesses acoustic images, extracts several parameters and finally classifies them, based on Support Vector Machine (SVM). The preprocessing techniques used are spatial filtering, segmentation-based on a Gaussian Mixture Model (GMM) to separate the pe...