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West Virginia University
(46 results)-
White Papers
A New Biometric Modality Based on Conjunctival Vasculature
October 3, 2009, 12:00am PDT
A new biometric indicator based on the patterns of conjunctival vasculature is proposed. Conjunctival vessels can be observed on the visible part of the sclera that is exposed to the outside...
Provided by West Virginia University
-
White Papers
Online Learning in Biometrics: A Case Study in Face Classifier Update
September 1, 2009, 12:00am PDT
In large scale applications, hundreds of new subjects may be regularly enrolled in a biometric system. To account for the variations in data distribution caused by these new enrollments, biometric...
Provided by West Virginia University
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White Papers
Exploiting the "Doddington Zoo" Effect in Biometric Fusion
September 1, 2009, 12:00am PDT
Recent research in biometrics has suggested the existence of the "Biometric Menagerie" in which weak users contribute disproportionately to the error rate (FAR and FRR) of a biometric system. The...
Provided by West Virginia University
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White Papers
Multibiometric Systems: Overview, Case Studies and Open Issues
March 5, 2009, 12:00am PST
Information fusion refers to the reconciliation of evidence presented by multiple sources of information in order to generate a decision. In the context of biometrics, evidence reconciliation...
Provided by West Virginia University
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White Papers
A Coding Scheme for Indexing Multimodal Biometric Databases
June 1, 2009, 12:00am PDT
In biometric identification systems, the identity associated with the input data is determined by comparing it against every entry in the database. This exhaustive matching process increases the...
Provided by West Virginia University
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White Papers
Multiclass mõ-Granular Soft Support Vector Machine: A Case Study in Dynamic Classifier Selection for Multispectral Face Recognition
August 8, 2008, 12:00am PDT
This paper presents a novel formulation of multiclass support vector machine by integrating the concepts of soft labels and granular computing. The proposed multiclass mõ-granular soft support...
Provided by West Virginia University
-
White Papers
Quality Induced Fingerprint Identification Using Extended Feature Set
August 15, 2008, 12:00am PDT
Automatic fingerprint identification systems use level-1 and level-2 features for fingerprint identification. However, forensic examiners utilize inherent level-3 details along with level-2...
Provided by West Virginia University
-
White Papers
Likelihood Ratio in a SVM Framework: Fusing Linear and Non-Linear Face Classifiers
May 4, 2008, 12:00am PDT
The performance of score-level fusion algorithms is often affected by conflicting decisions generated by the constituent matchers/classifiers. This paper describes a fusion algorithm that...
Provided by West Virginia University
-
White Papers
Integrated Multilevel Image Fusion and Match Score Fusion of Visible and Infrared Face Images for Robust Face Recognition
July 6, 2007, 12:00am PDT
This paper presents an integrated image fusion and match score fusion of multispectral face images. The fusion of visible and long wave infrared face images is performed using 2í-Granular SVM...
Provided by West Virginia University
-
White Papers
Multiclass m?-Granular Soft Support Vector Machine: A Case Study in Dynamic Classifier Selection for Multispectral Face Recognition
August 8, 2008, 12:00am PDT
This paper presents a novel formulation of multiclass support vector machine by integrating the concepts of soft labels and granular computing. The proposed multiclass m?-granular soft support...
Provided by West Virginia University
-
White Papers
Integrating Image Quality in 2?-Svm Biometric Match Score Fusion
October 26, 2007, 12:00am PDT
This paper proposes an intelligent 2í-support vector machine based match score fusion algorithm to improve the performance of face and iris recognition by integrating the quality of images. The...
Provided by West Virginia University
-
White Papers
Feature Based RDWT Watermarking for Multimodal Biometric System
June 7, 2007, 12:00am PDT
This paper presents a 3-level RDWT biometric watermarking algorithm to embed the voice biometric MFC coefficients in a color face image of the same individual for increased robustness, security...
Provided by West Virginia University
-
White Papers
Multibiometric Template Security Using Fuzzy Vault
August 15, 2008, 12:00am PDT
Template security is a critical issue in biometric systems because biometric templates cannot be easily revoked and reissued. While multibiometric systems overcome limitations such as...
Provided by West Virginia University
-
White Papers
Performance Comparison of Stateful and Stateless Group Rekeying Algorithms
March 1, 2008, 12:00am PST
Scalable group rekeying schemes proposed in the literature can be classified into two categories: stateful schemes, e.g., Logical Key Hierarchy (LKH) based approaches, and stateless schemes, e.g.,...
Provided by West Virginia University
-
White Papers
A Reconfigurable Distributed Multiagent System Optimized for Scalability
January 7, 2011, 12:00am PST
This paper proposes a novel solution for optimizing the size and communication overhead of a distributed multiagent system without compromising the performance. The proposed approach addresses the...
Provided by West Virginia University
-
White Papers
What Do Financial Markets Reveal About Global Warming?
July 21, 2009, 12:00am PDT
Financial market information can provide an objective assessment of expected losses due to global warming. In a Merton-type asset pricing model, with asset prices affected by changes in investment...
Provided by West Virginia University
-
White Papers
Institutions, Capital, And Growth
July 9, 2010, 12:00am PDT
The international development community has encouraged investment in physical and human capital as a precursor to economic progress. Recent evidence shows, however, that increases in capital do...
Provided by West Virginia University
-
White Papers
Integrated, Agent-Based, Real-Time Control Systems for Transmission and Distribution Networks
November 5, 2007, 12:00am PST
Centralized control systems can be easier to design and generally conform to utility industry practices, but have disadvantages in terms of actuation speed and limited robustness to failures....
Provided by West Virginia University
-
White Papers
Performance Evaluation of Hop-Based Range-Free Localization Methods in Wireless Sensor Networks
January 4, 2011, 12:00am PST
Knowledge of nodes' locations is an important requirement for many applications in Wireless Sensor Networks. In the hop-based range-free localization methods, anchors broadcast the localization...
Provided by West Virginia University
-
White Papers
Face Recognition for Look-Alikes: A Preliminary Study
August 15, 2011, 12:00am PDT
One of the major challenges of face recognition is to design a feature extractor and matcher that reduces the intra-class variations and increases the inter-class variations. The feature...
Provided by West Virginia University
-
White Papers
A Framework for Quality-Based Biometric Classifier Selection
August 16, 2011, 12:00am PDT
Multi-biometric systems fuse the evidence (e.g., match scores) pertaining to multiple biometric modalities or classifiers. Most score-level fusion schemes discussed in the literature require the...
Provided by West Virginia University
-
White Papers
Quality Assessment Based Denoising to Improve Face Recognition Performance
April 26, 2011, 12:00am PDT
A probe face image may contain noise due to environmental conditions, incorrect use of sensors or transmission error. The performance of face recognition severely depletes when the probe image is...
Provided by West Virginia University
-
White Papers
Evolutionary Granular Approach for Recognizing Faces Altered Due to Plastic Surgery
January 19, 2011, 12:00am PST
Recognizing faces with altered appearances is a challenging task and is only now beginning to be addressed by researchers. The paper presents an evolutionary granular approach for matching face...
Provided by West Virginia University
-
White Papers
On Co-Training Online Biometric Classifiers
August 13, 2011, 12:00am PDT
In an operational biometric verification system, changes in biometric data over a period of time can affect the classification accuracy. Online learning has been used for updating the classifier...
Provided by West Virginia University
-
White Papers
Simultaneous Latent Fingerprint Recognition
July 4, 2011, 12:00am PDT
Simultaneous latent fingerprints are clusters of friction ridge impressions deposited concurrently in a crime scene. The analysis of these impressions is a complex task to infer individualization,...
Provided by West Virginia University
-
White Papers
Biometric Classifier Update Using Online Learning: A Case Study in Near Infrared Face Verification
January 18, 2010, 12:00am PST
The performance of large-scale biometric system deteriorates over time as new individuals are continually enrolled. To maintain a high-level of performance, the classifier has to be retrained...
Provided by West Virginia University
-
White Papers
Quality-Based Fusion for Multichannel Iris Recognition
January 26, 2010, 12:00am PST
The authors propose a quality-based fusion scheme for improving the recognition accuracy using color iris images characterized by three spectral channels - Red, Green and Blue. In the proposed...
Provided by West Virginia University
-
White Papers
Combining Pores and Ridges With Minutiae for Improved Fingerprint Verification
December 17, 2008, 12:00am PST
This paper presents a fast fingerprint verification algorithm using level-2 minutiae and level-3 pore and ridge features. The proposed algorithm uses a two-stage process to register fingerprint...
Provided by West Virginia University
-
White Papers
Context Switching Algorithm for Selective Multibiometric Fusion
October 4, 2009, 12:00am PDT
This paper presents a multimodal biometric fusion algorithm that supports biometric image quality and case-based context switching approach for selecting appropriate constituent unimodal traits...
Provided by West Virginia University
-
White Papers
Effect of Plastic Surgery on Face Recognition: A Preliminary Study
April 15, 2009, 12:00am PDT
Variations in pose, expression, illumination, aging and disguise are considered as major challenges in face recognition and several techniques have been proposed to address these challenges....
Provided by West Virginia University
-
White Papers
Fingerprint Indexing Using Minutiae and Pore Features
May 13, 2009, 12:00am PDT
In this paper, the authors propose level-2 and level-3 feature based fingerprint indexing algorithm to improve the speed and accuracy of identification. Indexing parameters are computed using the...
Provided by West Virginia University
-
White Papers
Radiation Detection and Situation Management by Distributed Sensor Networks
March 16, 2009, 12:00am PDT
Detection of radioactive materials in an urban environment usually requires large, portal-monitor-style radiation detectors. However, this may not be a practical solution in many transport...
Provided by West Virginia University
-
Whitepapers
Optimization of a Finite Frequency-Hopping Ad Hoc Network in Nakagami Fading
July 17, 2012, 12:00am PDT
This paper considers the analysis and optimization of a frequency-hopping ad hoc network with a finite number of mobiles and finite spatial extent. The mobiles communicate using coded...
Provided by West Virginia University
-
Whitepapers
Guard Zones and the Near-Far Problem in DS-CDMA Ad Hoc Networks
July 12, 2012, 12:00am PDT
The central issue in Direct-Sequence Code-Division Multiple-Access (DS-CDMA) ad hoc networks is the prevention of a near-far problem. This paper considers two types of guard zones that may be used...
Provided by West Virginia University
-
Whitepapers
Analysis and Optimization of a Frequency-Hopping Ad Hoc Network in Rayleigh Fading
July 14, 2012, 12:00am PDT
This paper proposes a new method for optimizing frequency-hopping ad hoc networks in the presence of Rayleigh fading. It is assumed that the system uses a capacity-approaching code (e.g., turbo or...
Provided by West Virginia University
-
Whitepapers
Physical-Layer Network Coding Using FSK Modulation Under Frequency Offset
February 6, 2012, 12:00am PST
Physical-layer network coding is a protocol capable of increasing throughput over conventional relaying in the two-way relay channel, but is sensitive to phase and frequency offsets among...
Provided by West Virginia University
-
Whitepapers
Distributed Parameter Estimation in Wireless Sensor Networks Using Fused Local Observations
May 8, 2012, 12:00am PDT
This paper is to reliably estimate a vector of unknown deterministic parameters associated with an underlying function at a fusion center of a wireless sensor network based on its noisy samples...
Provided by West Virginia University
-
Whitepapers
Noncoherent Digital Network Coding Using Multi-Tone CPFSK Modulation
August 11, 2011, 12:00am PDT
Digital network coding is a relaying technique that increases throughput in two-way relay networks. In contrast with analog network coding, which relays received analog signals plus noise, digital...
Provided by West Virginia University
-
Whitepapers
Improving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping
August 11, 2011, 12:00am PDT
Because it is widely supported by Commercial-Off-The-Shelf (COTS) technology, the DVB-S2 waveform standard has become an attractive solution for military communication links. The waveform uses a...
Provided by West Virginia University
-
Whitepapers
Channel-Aware Distributed Classification in Wireless Sensor Networks Using Binary Local Decisions
March 29, 2011, 12:00am PDT
This paper considers the problem of distributed multi-hypothesis classification in the context of wireless sensor networks. The goal is to reliably classify an underlying hypothesis at a fusion...
Provided by West Virginia University
-
Whitepapers
Fairness and Stability Analysis of Congestion Control Schemes in Vehicular Ad-Hoc Networks
March 30, 2012, 12:00am PDT
Cooperative Vehicle Safety (CVS) systems operate based on broadcast of vehicle position and safety information to neighboring cars. The communication medium of CVS is a vehicular ad-hoc network....
Provided by West Virginia University
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Whitepapers
The BICM Capacity of Coherent Continuous-Phase Frequency Shift Keying
July 13, 2007, 12:00am PDT
Continuous-Phase Frequency Shift Keying (CPFSK) is an attractive modulation choice due its small spectral side-lobes and constant envelope. In order to improve the energy efficiency, CPFSK can be...
Provided by West Virginia University
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Whitepapers
A Genetic Algorithm for Designing Constellations With Low Error Floors
February 22, 2008, 12:00am PST
The error floor of Bit-Interleaved Coded Modulation with Iterative Decoding (BICM-ID) can be minimized for a particular constellation by maximizing the harmonic mean of the squared-Euclidian...
Provided by West Virginia University
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Whitepapers
The Information-Outage Probability of Finite-Length Codes Over AWGN Channels
February 22, 2008, 12:00am PST
The performance of random error control codes approaches the Shannon capacity limit as the code length goes to infinity. When the code length is finite, then the code will be unable to achieve...
Provided by West Virginia University
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Whitepapers
Noncoherent Physical-Layer Network Coding Using Binary CPFSK Modulation
August 14, 2009, 12:00am PDT
Physical-layer network coding is a high-throughput technique for communicating over the two-way relay channel, which consists of two terminals that communicate exclusively via an intermediate...
Provided by West Virginia University
-
Whitepapers
Constellation Shaping for Communication Channels With Quantized Outputs
March 2, 2011, 12:00am PST
This paper considers a technique to maximize the mutual information between the channel input and channel output of an AWGN channel when the input is chosen from a fixed signal constellation and...
Provided by West Virginia University
-
Whitepapers
Channel-Aware Distributed Classification in Wireless Sensor Networks Using Binary Local Decisions
March 29, 2011, 12:00am PDT
This paper considers the problem of distributed multi-hypothesis classification in the context of wireless sensor networks. The goal is to reliably classify an underlying hypothesis at a fusion...
Provided by West Virginia University
-
Whitepapers
Improving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping
August 11, 2011, 12:00am PDT
Because it is widely supported by Commercial-Off-The-Shelf (COTS) technology, the DVB-S2 waveform standard has become an attractive solution for military communication links. The waveform uses a...
Provided by West Virginia University
-
Whitepapers
Noncoherent Digital Network Coding Using Multi-Tone CPFSK Modulation
August 11, 2011, 12:00am PDT
Digital network coding is a relaying technique that increases throughput in two-way relay networks. In contrast with analog network coding, which relays received analog signals plus noise, digital...
Provided by West Virginia University
-
Whitepapers
Distributed Parameter Estimation in Wireless Sensor Networks Using Fused Local Observations
May 8, 2012, 12:00am PDT
This paper is to reliably estimate a vector of unknown deterministic parameters associated with an underlying function at a fusion center of a wireless sensor network based on its noisy samples...
Provided by West Virginia University
-
Whitepapers
Physical-Layer Network Coding Using FSK Modulation Under Frequency Offset
February 6, 2012, 12:00am PST
Physical-layer network coding is a protocol capable of increasing throughput over conventional relaying in the two-way relay channel, but is sensitive to phase and frequency offsets among...
Provided by West Virginia University
-
Whitepapers
Analysis and Optimization of a Frequency-Hopping Ad Hoc Network in Rayleigh Fading
July 14, 2012, 12:00am PDT
This paper proposes a new method for optimizing frequency-hopping ad hoc networks in the presence of Rayleigh fading. It is assumed that the system uses a capacity-approaching code (e.g., turbo or...
Provided by West Virginia University
-
Whitepapers
Guard Zones and the Near-Far Problem in DS-CDMA Ad Hoc Networks
July 12, 2012, 12:00am PDT
The central issue in Direct-Sequence Code-Division Multiple-Access (DS-CDMA) ad hoc networks is the prevention of a near-far problem. This paper considers two types of guard zones that may be used...
Provided by West Virginia University
-
Whitepapers
Optimization of a Finite Frequency-Hopping Ad Hoc Network in Nakagami Fading
July 17, 2012, 12:00am PDT
This paper considers the analysis and optimization of a frequency-hopping ad hoc network with a finite number of mobiles and finite spatial extent. The mobiles communicate using coded...
Provided by West Virginia University
-
White Papers
Radiation Detection and Situation Management by Distributed Sensor Networks
March 16, 2009, 12:00am PDT
Detection of radioactive materials in an urban environment usually requires large, portal-monitor-style radiation detectors. However, this may not be a practical solution in many transport...
Provided by West Virginia University
-
White Papers
Fingerprint Indexing Using Minutiae and Pore Features
May 13, 2009, 12:00am PDT
In this paper, the authors propose level-2 and level-3 feature based fingerprint indexing algorithm to improve the speed and accuracy of identification. Indexing parameters are computed using the...
Provided by West Virginia University
-
White Papers
Effect of Plastic Surgery on Face Recognition: A Preliminary Study
April 15, 2009, 12:00am PDT
Variations in pose, expression, illumination, aging and disguise are considered as major challenges in face recognition and several techniques have been proposed to address these challenges....
Provided by West Virginia University
-
White Papers
Context Switching Algorithm for Selective Multibiometric Fusion
October 4, 2009, 12:00am PDT
This paper presents a multimodal biometric fusion algorithm that supports biometric image quality and case-based context switching approach for selecting appropriate constituent unimodal traits...
Provided by West Virginia University
-
White Papers
Combining Pores and Ridges With Minutiae for Improved Fingerprint Verification
December 17, 2008, 12:00am PST
This paper presents a fast fingerprint verification algorithm using level-2 minutiae and level-3 pore and ridge features. The proposed algorithm uses a two-stage process to register fingerprint...
Provided by West Virginia University
-
White Papers
Quality-Based Fusion for Multichannel Iris Recognition
January 26, 2010, 12:00am PST
The authors propose a quality-based fusion scheme for improving the recognition accuracy using color iris images characterized by three spectral channels - Red, Green and Blue. In the proposed...
Provided by West Virginia University
-
White Papers
Biometric Classifier Update Using Online Learning: A Case Study in Near Infrared Face Verification
January 18, 2010, 12:00am PST
The performance of large-scale biometric system deteriorates over time as new individuals are continually enrolled. To maintain a high-level of performance, the classifier has to be retrained...
Provided by West Virginia University
-
White Papers
Simultaneous Latent Fingerprint Recognition
July 4, 2011, 12:00am PDT
Simultaneous latent fingerprints are clusters of friction ridge impressions deposited concurrently in a crime scene. The analysis of these impressions is a complex task to infer individualization,...
Provided by West Virginia University
-
White Papers
On Co-Training Online Biometric Classifiers
August 13, 2011, 12:00am PDT
In an operational biometric verification system, changes in biometric data over a period of time can affect the classification accuracy. Online learning has been used for updating the classifier...
Provided by West Virginia University
-
White Papers
Evolutionary Granular Approach for Recognizing Faces Altered Due to Plastic Surgery
January 19, 2011, 12:00am PST
Recognizing faces with altered appearances is a challenging task and is only now beginning to be addressed by researchers. The paper presents an evolutionary granular approach for matching face...
Provided by West Virginia University
-
White Papers
Quality Assessment Based Denoising to Improve Face Recognition Performance
April 26, 2011, 12:00am PDT
A probe face image may contain noise due to environmental conditions, incorrect use of sensors or transmission error. The performance of face recognition severely depletes when the probe image is...
Provided by West Virginia University
-
White Papers
A Framework for Quality-Based Biometric Classifier Selection
August 16, 2011, 12:00am PDT
Multi-biometric systems fuse the evidence (e.g., match scores) pertaining to multiple biometric modalities or classifiers. Most score-level fusion schemes discussed in the literature require the...
Provided by West Virginia University
-
White Papers
Face Recognition for Look-Alikes: A Preliminary Study
August 15, 2011, 12:00am PDT
One of the major challenges of face recognition is to design a feature extractor and matcher that reduces the intra-class variations and increases the inter-class variations. The feature...
Provided by West Virginia University
-
White Papers
Performance Evaluation of Hop-Based Range-Free Localization Methods in Wireless Sensor Networks
January 4, 2011, 12:00am PST
Knowledge of nodes' locations is an important requirement for many applications in Wireless Sensor Networks. In the hop-based range-free localization methods, anchors broadcast the localization...
Provided by West Virginia University
-
White Papers
Integrated, Agent-Based, Real-Time Control Systems for Transmission and Distribution Networks
November 5, 2007, 12:00am PST
Centralized control systems can be easier to design and generally conform to utility industry practices, but have disadvantages in terms of actuation speed and limited robustness to failures....
Provided by West Virginia University
-
White Papers
Institutions, Capital, And Growth
July 9, 2010, 12:00am PDT
The international development community has encouraged investment in physical and human capital as a precursor to economic progress. Recent evidence shows, however, that increases in capital do...
Provided by West Virginia University
-
White Papers
What Do Financial Markets Reveal About Global Warming?
July 21, 2009, 12:00am PDT
Financial market information can provide an objective assessment of expected losses due to global warming. In a Merton-type asset pricing model, with asset prices affected by changes in investment...
Provided by West Virginia University
-
White Papers
A Reconfigurable Distributed Multiagent System Optimized for Scalability
January 7, 2011, 12:00am PST
This paper proposes a novel solution for optimizing the size and communication overhead of a distributed multiagent system without compromising the performance. The proposed approach addresses the...
Provided by West Virginia University
-
White Papers
Performance Comparison of Stateful and Stateless Group Rekeying Algorithms
March 1, 2008, 12:00am PST
Scalable group rekeying schemes proposed in the literature can be classified into two categories: stateful schemes, e.g., Logical Key Hierarchy (LKH) based approaches, and stateless schemes, e.g.,...
Provided by West Virginia University
-
White Papers
Multibiometric Template Security Using Fuzzy Vault
August 15, 2008, 12:00am PDT
Template security is a critical issue in biometric systems because biometric templates cannot be easily revoked and reissued. While multibiometric systems overcome limitations such as...
Provided by West Virginia University
-
White Papers
Feature Based RDWT Watermarking for Multimodal Biometric System
June 7, 2007, 12:00am PDT
This paper presents a 3-level RDWT biometric watermarking algorithm to embed the voice biometric MFC coefficients in a color face image of the same individual for increased robustness, security...
Provided by West Virginia University
-
White Papers
Integrating Image Quality in 2?-Svm Biometric Match Score Fusion
October 26, 2007, 12:00am PDT
This paper proposes an intelligent 2í-support vector machine based match score fusion algorithm to improve the performance of face and iris recognition by integrating the quality of images. The...
Provided by West Virginia University
-
White Papers
Multiclass m?-Granular Soft Support Vector Machine: A Case Study in Dynamic Classifier Selection for Multispectral Face Recognition
August 8, 2008, 12:00am PDT
This paper presents a novel formulation of multiclass support vector machine by integrating the concepts of soft labels and granular computing. The proposed multiclass m?-granular soft support...
Provided by West Virginia University
-
White Papers
Integrated Multilevel Image Fusion and Match Score Fusion of Visible and Infrared Face Images for Robust Face Recognition
July 6, 2007, 12:00am PDT
This paper presents an integrated image fusion and match score fusion of multispectral face images. The fusion of visible and long wave infrared face images is performed using 2í-Granular SVM...
Provided by West Virginia University
-
White Papers
Likelihood Ratio in a SVM Framework: Fusing Linear and Non-Linear Face Classifiers
May 4, 2008, 12:00am PDT
The performance of score-level fusion algorithms is often affected by conflicting decisions generated by the constituent matchers/classifiers. This paper describes a fusion algorithm that...
Provided by West Virginia University
-
White Papers
Quality Induced Fingerprint Identification Using Extended Feature Set
August 15, 2008, 12:00am PDT
Automatic fingerprint identification systems use level-1 and level-2 features for fingerprint identification. However, forensic examiners utilize inherent level-3 details along with level-2...
Provided by West Virginia University
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