Search Results for author: Patrick Tinsley

Found 8 papers, 3 papers with code

EyePreserve: Identity-Preserving Iris Synthesis

no code implementations19 Dec 2023 Siamul Karim Khan, Patrick Tinsley, Mahsa Mitcheff, Patrick Flynn, Kevin W. Bowyer, Adam Czajka

Synthesis of same-identity biometric iris images, both for existing and non-existing identities while preserving the identity across a wide range of pupil sizes, is complex due to intricate iris muscle constriction mechanism, requiring a precise model of iris non-linear texture deformations to be embedded into the synthesis pipeline.

Pupil Dilation

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.

Haven't I Seen You Before? Assessing Identity Leakage in Synthetic Irises

no code implementations3 Nov 2022 Patrick Tinsley, Adam Czajka, Patrick Flynn

Generative Adversarial Networks (GANs) have proven to be a preferred method of synthesizing fake images of objects, such as faces, animals, and automobiles.

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

DeformIrisNet: An Identity-Preserving Model of Iris Texture Deformation

1 code implementation18 Jul 2022 Siamul Karim Khan, Patrick Tinsley, Adam Czajka

Nonlinear iris texture deformations due to pupil size variations are one of the main factors responsible for within-class variance of genuine comparison scores in iris recognition.

Pupil Dilation

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

This Face Does Not Exist ... But It Might Be Yours! Identity Leakage in Generative Models

1 code implementation10 Dec 2020 Patrick Tinsley, Adam Czajka, Patrick Flynn

This raises privacy-related questions, but also stimulates discussions of (a) the face manifold's characteristics in the feature space and (b) how to create generative models that do not inadvertently reveal identity information of real subjects whose images were used for training.

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