no code implementations • 6 Oct 2023 • Patrick Tinsley, Sandip Purnapatra, Mahsa Mitcheff, Aidan Boyd, Colton Crum, Kevin Bowyer, Patrick Flynn, Stephanie Schuckers, Adam Czajka, Meiling Fang, Naser Damer, Xingyu Liu, Caiyong Wang, Xianyun Sun, Zhaohua Chang, Xinyue Li, Guangzhe Zhao, Juan Tapia, Christoph Busch, Carlos Aravena, Daniel Schulz
New elements in this fifth competition include (1) GAN-generated iris images as a category of presentation attack instruments (PAI), and (2) an evaluation of human accuracy at detecting PAI as a reference benchmark.
no code implementations • 8 Jun 2023 • Colton R. Crum, Aidan Boyd, Kevin Bowyer, Adam Czajka
We compare the accuracy achieved by our teacher-student training paradigm with (1) training using all available human salience annotations, and (2) using all available training data without human salience annotations.
no code implementations • 21 Mar 2023 • Colton Crum, Patrick Tinsley, Aidan Boyd, Jacob Piland, Christopher Sweet, Timothy Kelley, Kevin Bowyer, Adam Czajka
In this paper, we propose five novel methods of leveraging model salience to explain a model behavior at scale.
no code implementations • 22 Aug 2022 • Aidan Boyd, Jeremy Speth, Lucas Parzianello, Kevin Bowyer, Adam Czajka
We have curated the largest publicly-available image dataset for this problem, drawing from 26 benchmarks previously released by various groups, and adding 150, 000 images being released with the journal version of this paper, to create a set of 450, 000 images representing authentic iris and seven types of presentation attack instrument (PAI).
no code implementations • 22 Aug 2022 • Aidan Boyd, Patrick Tinsley, Kevin Bowyer, Adam Czajka
Face image synthesis has progressed beyond the point at which humans can effectively distinguish authentic faces from synthetically generated ones.
no code implementations • 3 Aug 2022 • Aidan Boyd, Daniel Moreira, Andrey Kuehlkamp, Kevin Bowyer, Adam Czajka
Forensic iris recognition, as opposed to live iris recognition, is an emerging research area that leverages the discriminative power of iris biometrics to aid human examiners in their efforts to identify deceased persons.
1 code implementation • 1 Dec 2021 • Aidan Boyd, Patrick Tinsley, Kevin Bowyer, Adam Czajka
This new approach incorporates human-annotated saliency maps into a loss function that guides the model's learning to focus on image regions that humans deem salient for the task.
1 code implementation • 1 Dec 2021 • Andrey Kuehlkamp, Aidan Boyd, Adam Czajka, Kevin Bowyer, Patrick Flynn, Dennis Chute, Eric Benjamin
In this paper, we present an end-to-end deep learning-based method for postmortem iris segmentation and recognition with a special visualization technique intended to support forensic human examiners in their efforts.
no code implementations • 7 May 2021 • Aidan Boyd, Kevin Bowyer, Adam Czajka
One ongoing challenge is how to achieve the greatest accuracy in cases where training data is limited.
no code implementations • 1 Sep 2020 • Priyanka Das, Joseph McGrath, Zhaoyuan Fang, Aidan Boyd, Ganghee Jang, Amir Mohammadi, Sandip Purnapatra, David Yambay, Sébastien Marcel, Mateusz Trokielewicz, Piotr Maciejewicz, Kevin Bowyer, Adam Czajka, Stephanie Schuckers, Juan Tapia, Sebastian Gonzalez, Meiling Fang, Naser Damer, Fadi Boutros, Arjan Kuijper, Renu Sharma, Cunjian Chen, Arun Ross
Launched in 2013, LivDet-Iris is an international competition series open to academia and industry with the aim to assess and report advances in iris Presentation Attack Detection (PAD).
no code implementations • 23 Jun 2020 • Aidan Boyd, Zhaoyuan Fang, Adam Czajka, Kevin W. Bowyer
As the popularity of iris recognition systems increases, the importance of effective security measures against presentation attacks becomes paramount.
1 code implementation • 20 Feb 2020 • Aidan Boyd, Adam Czajka, Kevin Bowyer
Features are extracted from each convolutional layer and the classification accuracy achieved by a Support Vector Machine is measured on a dataset that is disjoint from the samples used in training of the ResNet-50 model.
no code implementations • 20 Feb 2020 • Aidan Boyd, Adam Czajka, Kevin Bowyer
We use (on purpose) a single-layer convolutional neural network as it mimics an iris code-based algorithm.