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Journal ArticleDOI

Likelihood Ratio-Based Biometric Score Fusion

TLDR
Experiments on three multibiometric databases indicate that the proposed fusion framework achieves consistently high performance compared to commonly used score fusion techniques based on score transformation and classification.
Abstract
Multibiometric systems fuse information from different sources to compensate for the limitations in performance of individual matchers. We propose a framework for the optimal combination of match scores that is based on the likelihood ratio test. The distributions of genuine and impostor match scores are modeled as finite Gaussian mixture model. The proposed fusion approach is general in its ability to handle 1) discrete values in biometric match score distributions, 2) arbitrary scales and distributions of match scores, 3) correlation between the scores of multiple matchers, and 4) sample quality of multiple biometric sources. Experiments on three multibiometric databases indicate that the proposed fusion framework achieves consistently high performance compared to commonly used score fusion techniques based on score transformation and classification.

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Citations
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Journal ArticleDOI

A Cumulants-Based Human Brain Decoding

TL;DR: A statistical technique is offered together with specialised feature extraction and selection methods to increase the accuracy and it is compared with the current methods reported in recent research to validate the suggested approach.

Biometrics via Oculomotor Plant Characteristics: Impact

TL;DR: In this article, the anatomical properties of the human oculomotor plant from the measurable properties of human eye movements are estimated using a two-dimensional linear homeomorphic model of the oculOMotor plant.
DissertationDOI

Mitigating the effect of covariates in face recognition

Richa Singh
TL;DR: To address the challenge of facial aging, an age transformation algorithm is proposed that registers two face images and minimizes the aging variations and the concept of online learning is introduced to address the problem of classifier re-training and update.
Journal ArticleDOI

Hierarchical Representation Learning for Kinship Verification

TL;DR: The results show that the proposed deep learning framework (KVRL-fcDBN) yields state-of- the-art kinship verification accuracy on the WVU Kinship database and on four existing benchmark datasets.
Proceedings ArticleDOI

Redundancy and diversity measure inspired biometrics fusion

TL;DR: A novel solution which uses a machine learning approach to generate confidence scores for each system for every instance of decision by implicitly modelling the redundancy and diversity measures from the training data.
References
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BookDOI

Density estimation for statistics and data analysis

TL;DR: The Kernel Method for Multivariate Data: Three Important Methods and Density Estimation in Action.
Book

Testing statistical hypotheses

TL;DR: The general decision problem, the Probability Background, Uniformly Most Powerful Tests, Unbiasedness, Theory and First Applications, and UNbiasedness: Applications to Normal Distributions, Invariance, Linear Hypotheses as discussed by the authors.
Journal ArticleDOI

On combining classifiers

TL;DR: A common theoretical framework for combining classifiers which use distinct pattern representations is developed and it is shown that many existing schemes can be considered as special cases of compound classification where all the pattern representations are used jointly to make a decision.
Journal ArticleDOI

Unsupervised learning of finite mixture models

TL;DR: The novelty of the approach is that it does not use a model selection criterion to choose one among a set of preestimated candidate models; instead, it seamlessly integrate estimation and model selection in a single algorithm.
Journal ArticleDOI

Score normalization in multimodal biometric systems

TL;DR: Study of the performance of different normalization techniques and fusion rules in the context of a multimodal biometric system based on the face, fingerprint and hand-geometry traits of a user found that the application of min-max, z-score, and tanh normalization schemes followed by a simple sum of scores fusion method results in better recognition performance compared to other methods.
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