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Non-invasive methods to measure brain activity are important to understand cognitive processes in the human brain. A prominent example is functional magnetic resonance imaging (fMRI), which is a noisy measurement of a delayed signal that…

Neurons and Cognition · Quantitative Biology 2020-08-17 Hans-Christian Ruiz-Euler , Jose R. Ferreira Marques , Hilbert J. Kappen

This paper presents a novel mutual information (MI) matrix based method for fault detection. Given a $m$-dimensional fault process, the MI matrix is a $m \times m$ matrix in which the $(i,j)$-th entry measures the MI values between the…

Signal Processing · Electrical Eng. & Systems 2021-02-19 Feiya Lv , Shujian Yu , Chenglin Wen , Jose C. Principe

Deep neural networks for semantic segmentation rely on large-scale annotated datasets, leading to an annotation bottleneck that motivates few shot semantic segmentation (FSS) which aims to generalize to novel classes with minimal labeled…

Computer Vision and Pattern Recognition · Computer Science 2025-12-17 Ourui Fu , Hangzhou He , Kaiwen Li , Xinliang Zhang , Lei Zhu , Shuang Zeng , Zhaoheng Xie , Yanye Lu

The aim of this work is to determine how vulnerable different iris coding methods are in relation to biometric template aging phenomenon. This is considered to be particularly important when the time lapse between gallery and probe samples…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Mateusz Trokielewicz

A new high-precision eye-tracking method has been demonstrated recently by tracking the motion of iris features rather than by exploiting pupil edges. While the method provides high precision, it suffers from temporal drift, an inability to…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Aayush K. Chaudhary , Jeff B. Pelz

The extraction of consistent and identifiable features from an image of the human iris is known as iris recognition. Identifying which pixels belong to the iris, known as segmentation, is the first stage of iris recognition. Errors in…

Computer Vision and Pattern Recognition · Computer Science 2018-12-21 Sohaib Ahmad , Benjamin Fuller

The iris pattern has significantly improved the biometric recognition field due to its high level of stability and uniqueness. Such physical feature has played an important role in security and other related areas. However, presentation…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Gabriela Y. Kimura , Diego R. Lucio , Alceu S. Britto , David Menotti

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. In dominant approaches to iris recognition, the size of a…

Computer Vision and Pattern Recognition · Computer Science 2022-10-19 Siamul Karim Khan , Patrick Tinsley , Adam Czajka

Iris recognition is a mature biometric technology offering remarkable precision and speed, and allowing for large-scale deployments to populations exceeding a billion enrolled users (e.g., AADHAAR in India). However, in forensic…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Mahsa Mitcheff , Adam Czajka

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

Magnetic Resonance Spectroscopic Imaging (MRSI) is a powerful tool for non-invasive mapping of brain metabolites, providing critical insights into neurological conditions. However, its utility is often limited by missing or corrupted data…

Image and Video Processing · Electrical Eng. & Systems 2025-05-13 Tan-Hanh Pham , Ovidiu C. Andronesi , Xianqi Li , Kim-Doang Nguyen

The human brain can be conceptualized as a dynamical system. Utilizing resting state fMRI time series imaging, we can study the underlying dynamics at ear-marked Regions of Interest (ROIs) to understand structure or lack thereof. This…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Ninad Aithal , Chakka Sai Pradeep , Neelam Sinha

Iris texture is widely regarded as a gold standard biometric modality for authentication and identification. The demand for robust iris recognition methods, coupled with growing security and privacy concerns regarding iris attacks, has…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Mengdi Wang , Efe Bozkir , Enkelejda Kasneci

Databases play an important role in cyber world. It provides authenticity across the globe to the legitimate user. Biometrics is another important tool which recognizes humans using their physical statistics. Biometrics system requires…

Computer Science and Game Theory · Computer Science 2012-07-13 Adnan Alam Khan , Safeeullah Soomro , Irfan Hyder

Underlying cause of death coding from death certificates is a process that is nowadays undertaken mostly by humans with a potential assistance from expert systems such as the Iris software. It is as a consequence an expensive process that…

There is uncertainty around the effect of aging of children on biometric characteristics impacting applications relying on biometric recognition, particularly as the time between enrollment and query increases. Though there have been…

Image and Video Processing · Electrical Eng. & Systems 2021-01-19 Priyanka Das , Laura Holsopple , Dan Rissacher , Michael Schuckers , Stephanie Schuckers

One of the major challenges in ocular biometrics is the cross-spectral scenario, i.e., how to match images acquired in different wavelengths (typically visible (VIS) against near-infrared (NIR)). This article designs and extensively…

Computer Vision and Pattern Recognition · Computer Science 2019-11-22 Luiz A. Zanlorensi , Diego R. Lucio , Alceu S. Britto , Hugo Proença , David Menotti

In this paper, we seek a new method in designing an iris recognition system. In this method, first the Haar wavelet features are extracted from iris images. The advantage of using these features is the high-speed extraction, as well as…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Farahnaz Hosseini , Hossein Ebrahimpour , Samaneh Askari

Recent research has explored the possibility of automatically deducing information such as gender, age and race of an individual from their biometric data. While the face modality has been extensively studied in this regard, the iris…

Computer Vision and Pattern Recognition · Computer Science 2019-01-21 Denton Bobeldyk , Arun Ross

In this study, we present a technique that spans multi-scale views (global scale -- meaning brain network-level and local scale -- examining each individual ROI that constitutes the network) applied to resting-state fMRI volumes. Deep…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Ammu R. , Debanjali Bhattacharya , Ameiy Acharya , Ninad Aithal , Neelam Sinha