Proceedings ArticleDOI
Convolutional Neural Networks for Iris Presentation Attack Detection: Toward Cross-Dataset and Cross-Sensor Generalization
Steven Hoffman,Renu Sharma,Aran Ross +2 more
- pp 1620-1628
TLDR
A Convolutional Neural Network architecture for presentation attack detection, that is observed to have good cross-dataset generalization capability and to use the pre-normalized iris rather than the normalized iris, thereby avoiding spatial information loss.Abstract:
Iris recognition systems are vulnerable to presentation attacks where an adversary employs artifacts such as 2D prints of the eye, plastic eyes, and cosmetic contact lenses to obfuscate their own identity or to spoof the identity of another subject. In this work, we design a Convolutional Neural Network (CNN) architecture for presentation attack detection, that is observed to have good cross-dataset generalization capability. The salient features of the proposed approach include: (a) the use of the pre-normalized iris rather than the normalized iris, thereby avoiding spatial information loss; (b) the tessellation of the iris region into overlapping patches to enable data augmentation as well as to learn features that are location agnostic; (c) fusion of information across patches to enhance detection accuracy; (d) incorporating a "segmentation mask" in order to automatically learn the relative importance of the pupil and iris regions; (e) generation of a "heat map" that displays patch-wise presentation attack information, thereby accounting for artifacts that may impact only a small portion of the iris region. Experiments confirm the efficacy of the proposed approach.read more
Citations
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Proceedings ArticleDOI
Iris + Ocular: Generalized Iris Presentation Attack Detection Using Multiple Convolutional Neural Networks
TL;DR: This work fuses the outputs of three Convolutional Neural Network (CNN) based PA detectors, each of which examines different portions of the input image, to improve the generalizability of PA detectors.
Proceedings ArticleDOI
Iris Liveness Detection Competition (LivDet-Iris) - The 2020 Edition
Priyanka Das,Joseph Mcfiratht,Zhaoyuan Fang,Aidan Boyd,Ganghee Jang,Amir H. Mohammadi,Sandip Purnapatra,David Yambay,Sébastien Marcel,Mateusz Trokielewicz,Piotr Maciejewicz,Kevin W. Bowyer,Adam Czajka,Stephanie Schuckers,Juan Tapia,Sebastian Gonzalez,Meiling Fang,Naser Damer,Fadi Boutros,Arian Kuijper,Renu Sharma,Cunjian Chen,Arun Ross +22 more
TL;DR: LivDet-Iris 2020 as mentioned in this paper is an international competition series for iris PAD, which is open to academia and industry with the aim to assess and report advances in iris Presentation Attack Detection.
Proceedings ArticleDOI
D-NetPAD: An Explainable and Interpretable Iris Presentation Attack Detector
Renu Sharma,Arun Ross +1 more
TL;DR: D-NetPAD as discussed by the authors proposed an effective and robust iris PA detector based on the DenseNet convolutional neural network architecture, which demonstrates generalizability across PA artifacts, sensors and datasets.
Proceedings ArticleDOI
An Explainable Attention-Guided Iris Presentation Attack Detector
Cunjian Chen,Arun Ross +1 more
TL;DR: In this article, an explainable attention-guided iris presentation attack detector (AG-PAD) is proposed to augment CNNs with attention mechanisms and to provide visual explanations of model predictions.
Posted Content
Demographic Bias in Presentation Attack Detection of Iris Recognition Systems
TL;DR: This paper investigates and analyzes the demographic bias in iris PAD algorithms and points out that female users will be significantly less protected by the PAD, in comparison to males.
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