نتایج جستجو برای: iris

تعداد نتایج: 11990  

2006
Christopher K. Boyce

Multispectral Iris Recognition Analysis: Techniques and Evaluation by Christopher K. Boyce Master of Science in Electrical Engineering West Virginia University Lawrence Hornak, Ph.D., Chair Arun Ross, Ph.D. (Co-chair) This thesis explores the benefits of using multispectral iris information acquired using a narrow-band multispectral imaging system. Commercial iris recognition systems typically ...

2016
Ratnadeep R. Deshmukh

Authentication systems based on iris play important role to improve efficiency in biometric identification due to its reliability in highly secured areas. Iris recognition has been done by many researchers in last decade.The iris recognition systems have made large progress over the past decade. In this paper we will discuss about the complications and problems of iris recognition system.This p...

2013
Anjana Peter

Iris recognition has been considered as one of the most reliable biometrics technologies in recent years due to its high reliability in person identification. In this paper, an iris recognition system has been proposed. The recognition system relies on four fundamental steps. The first step consists of iris localization using Circular Hough Transform (CHT). In the subsequent step, image is norm...

Journal: :IJBM 2012
Abhishek Verma Chengjun Liu Jiancheng Jia

A new iris recognition method based on a robust iris segmentation approach is presented in this paper for improving iris recognition performance. The robust iris segmentation approach applies power-law transformations for more accurate detection of the pupil region, which significantly reduces the candidate limbic boundary search space for increasing detection accuracy and efficiency. The limbi...

2013
Andrew R DiNardo Douglas Smoot Lewis Hoonmo L Koo J Clay Goodman Elizabeth Chiao Roberto Andrade Guillaume Martin-Blondel Matthijs Brouwer Bruce Brew Andrew DiNardo

Toxoplasma encephalitis immune reconstitution inflammatory syndrome (TE-IRIS) is rare and usually occurs in an unmasking, rather than paradoxical form. To the best of our knowledge, only two cases of paradoxical TE-IRIS and nine cases of unmasking TE-IRIS have been previously described. We present two additional cases of histopathology-consistent paradoxical TE-IRIS, after early initiation of a...

1998
RICHARD W. ZIOLKOWSKI BRIAN GRANT

The generalized dual-series approach to the capacitive and inductive iris waveguide problems is presented. Currents on the iris and plots of the fields and power flow in the vicinity of the iris are given for the capacitive iris case. It is found that vortices form in the iris region when higher order scattered modes are present. The formation of these vortices and their properties will be desc...

2014
Yogesh Pandit Chandan Singh D. Rawat

A wide variety of systems require reliable personal recognition schemes. With the development of biometric recognition technology it is found that iris is one of the most reliable biometric recognition schemes because of its randomly distributed features and unique characteristics. The method discussed in this paper recognized the key local variation points to represent the characteristics of t...

2004
Naomi F Walker James Scriven Graeme Meintjes Robert J Wilkinson

Access to antiretroviral therapy (ART) is improving worldwide. Immune reconstitution inflammatory syndrome (IRIS) is a common complication of ART initiation. In this review, we provide an overview of clinical and epidemiological features of HIV-associated IRIS, current understanding of pathophysiological mechanisms, available therapy, and preventive strategies. The spectrum of HIV-associated IR...

2014
Gurdeep Kaur Parminder Singh

Iris recognition has been done by many researchers in last decade. Iris recognition plays an important role to improve efficiency in biometric identification due to its reliability in highly secured areas. Such as In Airports And Harbors, Access Control In Laboratories And Factories traditional issue is focused on full fingerprint images matching and face detection are used for identification o...

2012
Frank Burch Aran Safir

Iris localization is a very important approach in biometric identification systems. Identification process usually is implemented in three levels: iris localization, feature extraction, and pattern matching finally. Accuracy of iris localization as the first step affects all other levels and this shows the importance of iris localization in an iris based biometric system. In this paper, we cons...

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