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This chapter shows that combining Haar-Hilbert and Log-Gabor improves iris recognition performance leading to a less ambiguous biometric decision landscape in which the overlap between the experimental intra- and interclass score…

Computer Vision and Pattern Recognition · Computer Science 2012-02-09 Valentina E. Balas , Iulia M. Motoc , Alina Barbulescu

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

Fingerprints are one of the most widely explored biometric traits. Specifically, contact-based fingerprint recognition systems reign supreme due to their robustness, portability and the extensive research work done in the field. However,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-23 Aman Attrish , Nagasai Bharat , Vijay Anand , Vivek Kanhangad

The development of face recognition algorithms by academic and commercial organizations is growing rapidly due to the onset of deep learning and the widespread availability of training data. Though tests of face recognition algorithm…

Computer Vision and Pattern Recognition · Computer Science 2022-03-11 John J. Howard , Eli J. Laird , Yevgeniy B. Sirotin , Rebecca E. Rubin , Jerry L. Tipton , Arun R. Vemury

Biometric authentication service providers often claim that it is not possible to reverse-engineer a user's raw biometric sample, such as a fingerprint or a face image, from its mathematical (feature-space) representation. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Gioacchino Tangari , Shreesh Keskar , Hassan Jameel Asghar , Dali Kaafar

Biometric systems represent valid solutions in tasks like user authentication and verification, since they are able to analyze physical and behavioural features with high precision. However, especially when physical biometrics are used, as…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Francesco Zola , Jose Alvaro Fernandez-Carrasco , Jan Lukas Bruse , Mikel Galar , Zeno Geradts

Infrared and visible image fusion targets to provide an informative image by combining complementary information from different sensors. Existing learning-based fusion approaches attempt to construct various loss functions to preserve…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Jinyuan Liu , Runjia Lin , Guanyao Wu , Risheng Liu , Zhongxuan Luo , Xin Fan

Radio frequency fingerprint identification (RFFI) is an emerging method for authenticating Internet of Things (IoT) devices. RFFI exploits the intrinsic and unique hardware imperfections for classifying IoT devices. Deep learning-based RFFI…

Cryptography and Security · Computer Science 2025-12-16 Jie Ma , Junqing Zhang , Guanxiong Shen , Linning Peng , Alan Marshall

Recent research has questioned the fairness of face-based recognition and attribute classification methods (such as gender and race) for dark-skinned people and women. Ocular biometrics in the visible spectrum is an alternate solution over…

Computer Vision and Pattern Recognition · Computer Science 2020-11-19 Anoop Krishnan , Ali Almadan , Ajita Rattani

The use of the iris as a biometric identifier has increased dramatically over the last 30 years, prompting privacy and security concerns about the use of iris images in research. It can be difficult to acquire iris image databases due to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Jingxuan Zhang , Robert J. Hart , Ziqian Bi , Shiaofen Fang , Susan Walsh

Unsupervised image translation using adversarial learning has been attracting attention to improve the image quality of medical images. However, adversarial training based on the global evaluation values of discriminators does not provide…

Image and Video Processing · Electrical Eng. & Systems 2022-10-25 Takumi Hase , Megumi Nakao , Mitsuhiro Nakamura , Tetsuya Matsuda

The morphological fingerprint in the brain is capable of identifying the uniqueness of an individual. However, whether such individual patterns are present in perinatal brains, and which morphological attributes or cortical regions better…

Machine Learning · Computer Science 2023-11-28 Boyang Wang , Weihao Zheng , Ying Wang , Zhe Zhang , Yuchen Sheng , Minmin Wang

The rapid advancement of authentication systems and their increasing reliance on biometrics for faster and more accurate user verification experience, highlight the critical need for a reliable framework to evaluate the suitability of…

Machine Learning · Computer Science 2025-08-20 Rouqaiah Al-Refai , Pankaja Priya Ramasamy , Ragini Ramesh , Patricia Arias-Cabarcos , Philipp Terhörst

Images with different resolutions are ubiquitous in public person re-identification (ReID) datasets and real-world scenes, it is thus crucial for a person ReID model to handle the image resolution variations for improving its generalization…

Computer Vision and Pattern Recognition · Computer Science 2018-10-25 Zijie Zhuang , Haizhou Ai , Long Chen , Chong Shang

Recent advances in machine learning leverage massive datasets of unlabeled images from the web to learn general-purpose image representations for tasks from image classification to face recognition. But do unsupervised computer vision…

Computers and Society · Computer Science 2021-01-28 Ryan Steed , Aylin Caliskan

Purpose A Magnetic Resonance Imaging (MRI) exam typically consists of several sequences that yield different image contrasts. Each sequence is parameterized through multiple acquisition parameters that influence image contrast,…

Image and Video Processing · Electrical Eng. & Systems 2022-02-23 Jonas Denck , Jens Guehring , Andreas Maier , Eva Rothgang

The perceptual representations supporting our ability to recognize faces remain a computational mystery. Deep neural networks offer mechanistic hypotheses for human face perception, but theoretically distinct models often make…

Neurons and Cognition · Quantitative Biology 2026-05-14 Wenxuan Guo , Heiko H. Schütt , Kamila Maria Jozwik , Katherine R. Storrs , Nikolaus Kriegeskorte , Tal Golan

Iris pattern recognition has significantly improved the biometric authentication field due to its high stability and uniqueness. Such physical characteristics have played an essential role in security and other related areas. However,…

Computer Vision and Pattern Recognition · Computer Science 2021-05-31 Juan Tapia , Sebastian Gonzalez , Christoph Busch

Despite the remarkable progress in face recognition related technologies, reliably recognizing faces across ages still remains a big challenge. The appearance of a human face changes substantially over time, resulting in significant…

Computer Vision and Pattern Recognition · Computer Science 2018-10-05 Jian Zhao , Yu Cheng , Yi Cheng , Yang Yang , Haochong Lan , Fang Zhao , Lin Xiong , Yan Xu , Jianshu Li , Sugiri Pranata , Shengmei Shen , Junliang Xing , Hengzhu Liu , Shuicheng Yan , Jiashi Feng

Behaviour biometrics are being explored as a viable alternative to overcome the limitations of traditional authentication methods such as passwords and static biometrics. Also, they are being considered as a viable authentication method for…

Cryptography and Security · Computer Science 2022-10-25 Oshan Jayawardana , Fariza Rashid , Suranga Seneviratne