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We propose a new iris presentation attack detection method using three-dimensional features of an observed iris region estimated by photometric stereo. Our implementation uses a pair of iris images acquired by a common commercial iris…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Adam Czajka , Zhaoyuan Fang , Kevin W. Bowyer

Face recognition presents a challenging problem in the field of image analysis and computer vision. The security of information is becoming very significant and difficult. Security cameras are presently common in airports, Offices,…

Computer Vision and Pattern Recognition · Computer Science 2014-03-04 Divyarajsinh N. Parmar , Brijesh B. Mehta

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. To train and validate the methods,…

Computer Vision and Pattern Recognition · Computer Science 2019-01-07 Daniel Kerrigan , Mateusz Trokielewicz , Adam Czajka , Kevin Bowyer

Iris-based biometric identification is increasingly recognized for its significant accuracy and long-term stability compared to other biometric modalities such as fingerprints or facial features. However, all biometric modalities are highly…

Cryptography and Security · Computer Science 2026-03-31 Christina Karakosta , Lian Alhedaithy , William J. Knottenbelt

The massive availability of cameras results in a wide variability of imaging conditions, producing large intra-class variations and a significant performance drop if heterogeneous images are compared for person recognition. However, as…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Fernando Alonso-Fernandez , Kiran B. Raja , R. Raghavendra , Cristoph Busch , Josef Bigun , Ruben Vera-Rodriguez , Julian Fierrez

Detecting people in images is a challenging problem. Differences in pose, clothing and lighting, along with other factors, cause a lot of variation in their appearance. To overcome these issues, we propose a system based on fused range and…

Computer Vision and Pattern Recognition · Computer Science 2016-12-08 Wim Abbeloos , Toon Goedemé

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. As a machine…

Computer Vision and Pattern Recognition · Computer Science 2022-08-08 Aidan Boyd , Daniel Moreira , Andrey Kuehlkamp , Kevin Bowyer , Adam Czajka

The use of the iris and periocular region as biometric traits has been extensively investigated, mainly due to the singularity of the iris features and the use of the periocular region when the image resolution is not sufficient to extract…

Computer Vision and Pattern Recognition · Computer Science 2022-02-07 Luiz A. Zanlorensi , Rayson Laroca , Eduardo Luz , Alceu S. Britto , Luiz S. Oliveira , David Menotti

Recent developments in hardware, computer graphics, and AI may soon enable AR/VR head-mounted displays (HMDs) to become everyday devices like smartphones and tablets. Eye trackers within HMDs provide a special opportunity for such setups as…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Mengdi Wang , Efe Bozkir , Enkelejda Kasneci

Multimodal biometric systems have gained popularity for their enhanced recognition accuracy and resistance to attacks like spoofing. This research explores methods for fusing iris and face feature vectors and implements robust security…

Cryptography and Security · Computer Science 2024-08-28 Surendra Singh , Lambert Igene , Stephanie Schuckers

3D face reconstruction (3DFR) algorithms are based on specific assumptions tailored to the limits and characteristics of the different application scenarios. In this study, we investigate how multiple state-of-the-art 3DFR algorithms can be…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Simone Maurizio La Cava , Roberto Casula , Sara Concas , Giulia Orrù , Ruben Tolosana , Martin Drahansky , Julian Fierrez , Gian Luca Marcialis

The use of physical and behavioral characteristics for human identification is known as biometrics. Among the many biometrics traits available, the fingerprint is the most widely used. The fingerprint identification is based on the…

Computer Vision and Pattern Recognition · Computer Science 2018-05-29 Lucas Alexandre Ramos , Aparecido Nilceu Marana

Biometrics systems have significantly improved person identification and authentication, playing an important role in personal, national, and global security. However, these systems might be deceived (or "spoofed") and, despite the recent…

Computer Vision and Pattern Recognition · Computer Science 2016-11-17 David Menotti , Giovani Chiachia , Allan Pinto , William Robson Schwartz , Helio Pedrini , Alexandre Xavier Falcao , Anderson Rocha

Biometric systems based on iris recognition are currently being used in border control applications and mobile devices. However, research in iris recognition is stymied by various factors such as limited datasets of bonafide irides and…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Shivangi Yadav , Arun Ross

The robustness and security of the biometric watermarking approach can be improved by using a multiple watermarking. This multiple watermarking proposed for improving security of biometric features and data. When the imposter tries to…

Multimedia · Computer Science 2017-01-17 Rohit M. Thanki , Ved Vyas Dwivedi , Komal R. Borisagar

With the increasing adoption of iris recognition systems and the expansion of large-scale enrollment databases, there is a growing need to efficiently assess iris image quality at the time of acquisition, particularly to model user…

Image and Video Processing · Electrical Eng. & Systems 2025-10-24 Jack Pessaud , Eric Moran , John Nguyen , Joel Palko

Non-invasive, efficient, physical token-less, accurate and stable identification methods for newborns may prevent baby swapping at birth, limit baby abductions and improve post-natal health monitoring across geographies, within the context…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Rasel Ahmed Bhuiyan , Mateusz Trokielewicz , Piotr Maciejewicz , Sherri Bucher , Adam Czajka

Iris recognition is widely used in high-security scenarios due to its stability and distinctiveness. However, iris images captured by different devices exhibit certain and device-related consistent differences, which has a greater impact on…

Computer Vision and Pattern Recognition · Computer Science 2025-04-14 Hang Zou , Chenxi Du , Ajian Liu , Yuan Zhang , Jing Liu , Mingchuan Yang , Jun Wan , Hui Zhang , Zhenan Sun

Multispectral object detection aims to leverage complementary information from visible (RGB) and infrared (IR) modalities to enable robust performance under diverse environmental conditions. Our key insight, derived from wavelet analysis…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Seongmin Hwang , Daeyoung Han , Moongu Jeon

Recently, iris recognition is regaining prominence in immersive applications such as extended reality as a means of seamless user identification. This application scenario introduces unique challenges compared to traditional iris…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Yuxi Mi , Qiuyang Yuan , Zhizhou Zhong , Xuan Zhao , Jiaogen Zhou , Fubao Zhu , Jihong Guan , Shuigeng Zhou