Online learning in biometrics: A case study in face classifier update
Citations
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Cites background from "Online learning in biometrics: A ca..."
...Therefore, another aspect of an adaptive biometric system is online learning , which can periodically update the matcher (Singh et al. 2009 ) ....
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49 citations
Cites background or methods from "Online learning in biometrics: A ca..."
...The feature matching models used in practice fall into two categories: discriminative models [7]–[13], [47], [48], [51], [52], [54] and generative models [14]–[16]....
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...On the other hand, discriminative approaches focus more directly on the classification task and thus can yield superior performance over the generative methods; representative methods include [7]–[13], [47], [48], [51], [52], [54]....
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48 citations
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Cites background from "Online learning in biometrics: A ca..."
...Actually, this is a common practice in other biometric techniques where the biometric characteristic may change over time, as in hand recognition (Amayeh et al., 2009), fingerprint (Freni et al., 2008) or face (Singh et al, 2009; Marcialis et al, 2008; Rattani et al., 2008)....
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References
40,147 citations
"Online learning in biometrics: A ca..." refers methods in this paper
..., N , K(xi,xj) is the kernel function [15], αi, αj are the Lagrange multipliers such that 0 ≤ αi ≤ Ci, ∑ i αiyi = 0, and ∑ i αi ≥ ν....
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...C is a regularization factor between the total distance of each error from the margin and the width of the margin, and ψi is the slack variable used to allow classification errors [15]....
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7,278 citations
"Online learning in biometrics: A ca..." refers methods in this paper
...In this process, the KarushKuhn Tucker conditions [4] are maintained so that the 2νOGSSVM provides an optimal decision hyperplane....
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5,742 citations
"Online learning in biometrics: A ca..." refers background in this paper
...The Labeled Faces in the Wild database [6] contains real world images of celebrities and popular individuals (this database contains images of more than 1,600 subjects from which we selected 294 subjects that have at least 6 images)....
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4,816 citations
"Online learning in biometrics: A ca..." refers methods in this paper
...The AR face database [8] contains face images with varying illumination and accessories, and the FERET database [10] has face images with different variations over a time interval of 3-4 years....
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