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Read e-book online Adaptive Biometric Systems: Recent Advances and Challenges PDF

By Ajita Rattani, Fabio Roli, Eric Granger

ISBN-10: 3319248634

ISBN-13: 9783319248639

ISBN-10: 3319248650

ISBN-13: 9783319248653

This interdisciplinary quantity provides a close review of the newest advances and demanding situations ultimate within the box of adaptive biometric platforms. A vast variety of strategies are supplied from a world number of pre-eminent specialists, accrued jointly less than a unified taxonomy and designed to be acceptable to any development popularity procedure. beneficial properties: offers a radical advent to the idea that of adaptive biometric structures; stories structures for adaptive face attractiveness that practice self-updating of facial types utilizing operational (unlabeled) information; describes a unique semi-supervised education procedure referred to as fusion-based co-training; examines the characterization and popularity of human gestures in video clips; discusses a variety of studying innovations that may be utilized to construct an adaptive biometric approach; investigates systems for dealing with temporal variance in facial biometrics as a result of getting older; proposes a score-level fusion scheme for an adaptive multimodal biometric system.

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The fusion-based co-training algorithm is shown in Algorithm 3. The main difference in this algorithm compared to self-training and co-training is that the fusionbased co-training requires an additional step in order to train the fusion classifier. This step is not needed if the fusion classifier used is based on fixed rules such as sum and product. , the expert outputs will appear more confident than they should be). To avoid the positive bias, one can adopt k-fold cross-validation. For instance, let k be two.

Results are related to the nature of the scenario presented in Sect. 3. The multiple enrolment sessions (up to 16), where small numbers of ROI were captured 30 C. Pagano et al. 1 0 6 37 46 51 56 67 77 92 101 134 Individual ID Fig. 12 Simulation results with FRGC dataset where the updating threshold is selected for fpr = 1 % a false positive rate, b true positive rate, c system complexity, d impostor ratio in the galleries of the top 10 lambs-like individuals (6 ROIs), favour the presence of genuine captures that are different enough to fail the updating threshold test.

This gallery then keeps attracting impostor templates over time, which reduces the pertinence of the facial model. 05 0 6 37 46 51 56 67 77 92 101 134 Individual ID Fig. 11 presents the average performance results for the fpr = 0 % updating thresholds for the self-updating techniques. It can be observed in Fig. 11b that this scenario represents a significantly harder FR problem, as all three systems perform below tpr = 23 % during the entire simulation. 5 templates for the self-update and context-sensitive self-update techniques (see Fig.

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Adaptive Biometric Systems: Recent Advances and Challenges by Ajita Rattani, Fabio Roli, Eric Granger

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