نتایج جستجو برای: iris registration

تعداد نتایج: 77890  

2016
Lubna Suaiti Ali Al-Haseni Hyunjoo Lee Debjani Sahni

CS: Cowden syndrome PTEN: phosphatase and tensin homolog INTRODUCTION Iris mammillation is an uncommon congenital anomaly of the eye that is rarely reported in the literature; initial reports describe iris mammillations using different terminology, such as bilateral iris melanosis, dotted Swiss iris, and bilateral diffuse iris nodular nevi. Microscopic examination finds focal nesting of spindle...

2017
Suzaan Marais Rachel P. J. Lai Katalin A. Wilkinson Graeme Meintjes Anne O’Garra Robert J. Wilkinson

Tuberculous meningitis (TBM) is a frequent cause of meningitis in individuals with human immunodeficiency virus (HIV) infection, resulting in death in approximately 40% of affected patients. A severe complication of antiretroviral therapy (ART) in these patients is neurological tuberculosis-immune reconstitution inflammatory syndrome (IRIS), but its underlying cause remains poorly understood. T...

2012
Shengnan Sun Lindu Zhao

Iris recognition is one of the most reliable and accurate biometric technologies, as the richness and apparent stability of the iris texture make it robust. Iris segmentation is a critical part in iris recognition, because it defines the inner and outer boundaries of iris region which is used for feature analysis. Active contour model, also known as snake, is a powerful image segmentation techn...

2003
Jinwook Go Gyundo Kee Jain Jang Yillbyung Lee Chulhee Lee

In this paper, we evaluate the performance of feature extraction methods for iris pattern classification. Generally, the identification system using iris recognition consists of the iris localization block and the iris pattern classification block. In this paper, we used the 2D bisection-based Hough transform and the radius histogram method for the iris localization and we used multilayer perce...

Journal: :Expert review of respiratory medicine 2009
William Worodria Anali Conesa-Botella Harriet Kisembo Keith Pwj McAdam Robert Colebunders

The TB immune reconstitution inflammatory syndrome (IRIS) is a relatively frequent complication in HIV-TB-coinfected patients after they start highly active antiretroviral therapy (HAART). There are two forms of TB IRIS: the 'paradoxical' type (clinical worsening of a patient on TB treatment) and the 'unmasking' type (undiagnosed TB becoming apparent after starting HAART). Their pathogeneses ar...

2015
Pattabhi Ramaiah Nalla Krishna Mohan Chalavadi

De-duplication of biometrics is not scalable when the number of people to be enrolled into the biometric system runs into billions, while creating a unique identity for every person. In this paper, we propose an iris classification based on sparse representation of log-gabor wavelet features using on-line dictionary learning (ODL) for large-scale de-duplication applications. Three different iri...

Journal: :Neurology 2011
I L Tan J C McArthur D B Clifford E O Major A Nath

OBJECTIVE To study the outcome of patients with multiple sclerosis (MS) and with natalizumab-associated progressive multifocal leukoencephalopathy (PML) and immune reconstitution inflammatory syndrome (IRIS). METHODS MedWatch reports from Biogen-Idec (manufacturer of natalizumab, Tysabri(®)) were reviewed which comprised all 42 cases of natalizumab-related PML cases since its reintroduction u...

2012
Swati Pandey

A Biometric system is an automatic identification of an individual based on a unique feature or characteristic. Iris recognition has great advantage such as variability, stability and security. In this paper, use the two methods for iris segmentation -An automatic segmentation method and Window method. Window method is a novel approach which comprises two steps first finds pupils' center and th...

Journal: :IJCINI 2008
Guangzhu Xu Zaifeng Zang Yide Ma

Iris recognition has been shown to be very accurate for human identification. In this article, an efficient iris recognition system based on Intersecting Cortical Model (ICM) neural network is presented which includes two parts mainly. The first part is image preprocessing which has three steps. First, iris location is implemented based on local areas. Then the localized iris area is normaliz...

2012
M. Suganthy P. Ramamoorthy

Iris recognition is one of the reliable and more stable biometric recognition for authenticating person which is very interesting and active topic in research and practical application. Iris recognition system consists of localization of the iris region and generation of data set of iris images followed by iris pattern recognition. In this paper, 2D wavelet transform is applied to the raw image...

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