Search Results for author: Kevin Bowyer

Found 28 papers, 7 papers with code

Iris Liveness Detection Competition (LivDet-Iris) -- The 2023 Edition

no code implementations6 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.

Beard Segmentation and Recognition Bias

no code implementations30 Aug 2023 Kagan Ozturk, Grace Bezold, Aman Bhatta, Haiyu Wu, Kevin Bowyer

To investigate the effect of facial hair in a rigorous manner, we first created a set of fine-grained facial hair annotations to train a segmentation model and evaluate its accuracy across African-American and Caucasian face images.

Attribute Face Recognition +1

Teaching AI to Teach: Leveraging Limited Human Salience Data Into Unlimited Saliency-Based Training

no code implementations8 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.

Face Detection Saliency Prediction

The Value of AI Guidance in Human Examination of Synthetically-Generated Faces

no code implementations22 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.

Face Detection Image Generation +1

State Of The Art In Open-Set Iris Presentation Attack Detection

no code implementations22 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).

Iris Recognition

Analyzing the Impact of Shape & Context on the Face Recognition Performance of Deep Networks

no code implementations5 Aug 2022 Sandipan Banerjee, Walter Scheirer, Kevin Bowyer, Patrick Flynn

In this article, we analyze how changing the underlying 3D shape of the base identity in face images can distort their overall appearance, especially from the perspective of deep face recognition.

Data Augmentation Face Recognition

Human Saliency-Driven Patch-based Matching for Interpretable Post-mortem Iris Recognition

no code implementations3 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.

Decision Making Iris Recognition

Interpretable Deep Learning-Based Forensic Iris Segmentation and Recognition

1 code implementation1 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.

Iris Recognition Iris Segmentation +1

CYBORG: Blending Human Saliency Into the Loss Improves Deep Learning

1 code implementation1 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.

Face Detection

A Study of the Human Perception of Synthetic Faces

no code implementations8 Nov 2021 Bingyu Shen, Brandon RichardWebster, Alice O'Toole, Kevin Bowyer, Walter J. Scheirer

In this paper, we introduce a study of the human perception of synthetic faces generated using different strategies including a state-of-the-art deep learning-based GAN model.

Face Generation

Human-Aided Saliency Maps Improve Generalization of Deep Learning

no code implementations7 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.

Going Deeper Into Face Detection: A Survey

no code implementations27 Mar 2021 Shervin Minaee, Ping Luo, Zhe Lin, Kevin Bowyer

In this work, we provide a detailed overview of some of the most representative deep learning based face detection methods by grouping them into a few major categories, and present their core architectural designs and accuracies on popular benchmarks.

Face Detection Image Classification

Remote Pulse Estimation in the Presence of Face Masks

no code implementations11 Jan 2021 Jeremy Speth, Nathan Vance, Patrick Flynn, Kevin Bowyer, Adam Czajka

Remote photoplethysmography (rPPG), a family of techniques for monitoring blood volume changes, may be especially useful for widespread contactless health monitoring using face video from consumer-grade visible-light cameras.

Data Augmentation Heart rate estimation

Deep Learning-Based Feature Extraction in Iris Recognition: Use Existing Models, Fine-tune or Train From Scratch?

1 code implementation20 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.

Iris Recognition

Are Gabor Kernels Optimal for Iris Recognition?

no code implementations20 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.

Iris Recognition

Learning Transformation-Aware Embeddings for Image Forensics

no code implementations13 Jan 2020 Aparna Bharati, Daniel Moreira, Patrick Flynn, Anderson Rocha, Kevin Bowyer, Walter Scheirer

To establish the efficacy of the proposed approach, comparisons with state-of-the-art handcrafted and deep learning-based descriptors, and image matching approaches are made.

Image Forensics Object Recognition

Characterizing the Variability in Face Recognition Accuracy Relative to Race

no code implementations15 Apr 2019 KS Krishnapriya, Kushal Vangara, Michael C. King, Vitor Albiero, Kevin Bowyer

For a fixed decision threshold, the African-American image cohort has a higher false match rate and a lower false non-match rate.

Face Recognition MORPH

Dynamic Spatial Verification for Large-Scale Object-Level Image Retrieval

no code implementations24 Mar 2019 Joel Brogan, Aparna Bharati, Daniel Moreira, Kevin Bowyer, Patrick Flynn, Anderson Rocha, Walter Scheirer

Images from social media can reflect diverse viewpoints, heated arguments, and expressions of creativity, adding new complexity to retrieval tasks.

Clustering Content-Based Image Retrieval +3

Iris Recognition with Image Segmentation Employing Retrained Off-the-Shelf Deep Neural Networks

1 code implementation4 Jan 2019 Daniel Kerrigan, Mateusz Trokielewicz, Adam Czajka, Kevin Bowyer

This paper offers three new, open-source, deep learning-based iris segmentation methods, and the methodology how to use irregular segmentation masks in a conventional Gabor-wavelet-based iris recognition.

Image Segmentation Iris Recognition +3

Predicting Gender from Iris Texture May Be Harder Than It Seems

no code implementations25 Nov 2018 Andrey Kuehlkamp, Kevin Bowyer

Predicting gender from iris images has been reported by several researchers as an application of machine learning in biometrics.

Gender Prediction

Ensemble of Multi-View Learning Classifiers for Cross-Domain Iris Presentation Attack Detection

1 code implementation25 Nov 2018 Andrey Kuehlkamp, Allan Pinto, Anderson Rocha, Kevin Bowyer, Adam Czajka

The adoption of large-scale iris recognition systems around the world has brought to light the importance of detecting presentation attack images (textured contact lenses and printouts).

Cross-Domain Iris Presentation Attack Detection Iris Recognition +1

Found a good match: should I keep searching? - Accuracy and Performance in Iris Matching Using 1-to-First Search

no code implementations22 Mar 2018 Andrey Kuehlkamp, Kevin Bowyer

Iris recognition is used in many applications around the world, with enrollment sizes as large as over one billion persons in India's Aadhaar program.

Iris Recognition

Provenance Filtering for Multimedia Phylogeny

1 code implementation1 Jun 2017 Allan Pinto, Daniel Moreira, Aparna Bharati, Joel Brogan, Kevin Bowyer, Patrick Flynn, Walter Scheirer, Anderson Rocha

Departing from traditional digital forensics modeling, which seeks to analyze single objects in isolation, multimedia phylogeny analyzes the evolutionary processes that influence digital objects and collections over time.

U-Phylogeny: Undirected Provenance Graph Construction in the Wild

1 code implementation31 May 2017 Aparna Bharati, Daniel Moreira, Allan Pinto, Joel Brogan, Kevin Bowyer, Patrick Flynn, Walter Scheirer, Anderson Rocha

Deriving relationships between images and tracing back their history of modifications are at the core of Multimedia Phylogeny solutions, which aim to combat misinformation through doctored visual media.

graph construction Misinformation

Gender-From-Iris or Gender-From-Mascara?

no code implementations4 Feb 2017 Andrey Kuehlkamp, Benedict Becker, Kevin Bowyer

Predicting a person's gender based on the iris texture has been explored by several researchers.

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