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The reduction of the cost of infrared (IR) cameras in recent years has made IR imaging a highly viable modality for face recognition in practice. A particularly attractive advantage of IR-based over conventional, visible spectrum-based face…

Computer Vision and Pattern Recognition · Computer Science 2014-07-29 Reza Shoja Ghiass , Ognjen Arandjelovic , Hakim Bendada , Xavier Maldague

This paper describes a feature extraction and gaze estimation software, named \textit{Pistol} that can be used with Pupil Invisible projects and other eye trackers in the future. In offline mode, our software extracts multiple features from…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Wolfgang Fuhl , Daniel Weber , Shahram Eivazi

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

Soft biometric information such as gender can contribute to many applications like as identification and security. This paper explores the use of a Binary Statistical Features (BSIF) algorithm for classifying gender from iris texture images…

Computer Vision and Pattern Recognition · Computer Science 2019-05-02 Juan Tapia , Claudia Arellano

Soft biometric modalities have shown their utility in different applications including reducing the search space significantly. This leads to improved recognition performance, reduced computation time, and faster processing of test samples.…

Computer Vision and Pattern Recognition · Computer Science 2017-10-10 Maneet Singh , Shruti Nagpal , Mayank Vatsa , Richa Singh , Afzel Noore , Angshul Majumdar

With increasing interest in employing iris biometrics as a forensic tool for identification by investigation authorities, there is a need for a thorough examination and understanding of post-mortem decomposition processes that take place…

Computer Vision and Pattern Recognition · Computer Science 2019-11-11 Mateusz Trokielewicz , Adam Czajka , Piotr Maciejewicz

Gabor kernels are widely accepted as dominant filters for iris recognition. In this work we investigate, given the current interest in neural networks, if Gabor kernels are the only family of functions performing best in iris recognition,…

Computer Vision and Pattern Recognition · Computer Science 2020-02-24 Aidan Boyd , Adam Czajka , Kevin Bowyer

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

Local spectral similarity (LSS) algorithm has been developed for detecting homogeneous areas and edges in hyperspectral images (HSIs). The proposed algorithm transforms the 3-D data cube (within a spatial window) into a spectral similarity…

Computer Vision and Pattern Recognition · Computer Science 2019-11-07 Anand S Sahadevan , Arundhati Misra , Praveen Gupta

This paper presents a comprehensive study of post-mortem human iris recognition carried out for 1,200 near-infrared and 1,787 visible-light samples collected from 37 deceased individuals kept in the mortuary conditions. We used four…

Computer Vision and Pattern Recognition · Computer Science 2018-11-01 Mateusz Trokielewicz , Adam Czajka , Piotr Maciejewicz

Iris segmentation is a deterministic part of the iris recognition system. Unreliable segmentation of iris regions especially the limbic area is still the bottleneck problem, which impedes more accurate recognition. To make further efforts…

Computer Vision and Pattern Recognition · Computer Science 2021-11-19 Jianze Wei , Huaibo Huang , Muyi Sun , Yunlong Wang , Min Ren , Ran He , Zhenan Sun

This paper describes the results of the 2023 edition of the ''LivDet'' series of iris presentation attack detection (PAD) competitions. New elements in this fifth competition include (1) GAN-generated iris images as a category of…

This research proposes a new database and method to detect the reduction of alertness conditions due to alcohol, drug consumption and sleepiness deprivation from Near-Infra-Red (NIR) periocular eye images. The study focuses on determining…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Juan Tapia , Daniel Benalcazar , Andres Valenzuela , Leonardo Causa , Enrique Lopez Droguett , Christoph Busch

In Cassini ISS (Imaging Science Subsystem) images, contour detection is often performed on disk-resolved object to accurately locate their center. Thus, the contour detection is a key problem. Traditional edge detection methods, such as…

Instrumentation and Methods for Astrophysics · Physics 2020-02-05 Xiqi Yang , Qingfeng Zhang , Zhan Li

Responsive and accurate facial expression recognition is crucial to human-robot interaction for daily service robots. Nowadays, event cameras are becoming more widely adopted as they surpass RGB cameras in capturing facial expression…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Zhe Wang , Qijin Song , Yucen Peng , Weibang Bai

Post-mortem iris recognition is an emerging application of iris-based human identification in a forensic setup, able to correctly identify deceased subjects even three weeks post-mortem. This technique thus is considered as an important…

Computer Vision and Pattern Recognition · Computer Science 2023-12-08 Rasel Ahmed Bhuiyan , Adam Czajka

This paper presents the experimental study revealing weaker performance of the automatic iris recognition methods for cataract-affected eyes when compared to healthy eyes. There is little research on the topic, mostly incorporating scarce…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Mateusz Trokielewicz , Adam Czajka , Piotr Maciejewicz

In this paper, we propose a robust 3D face recognition system which can handle pose as well as occlusions in real world. The system at first takes as input, a 3D range image, simultaneously registers it using ICP(Iterative Closest Point)…

Computer Vision and Pattern Recognition · Computer Science 2014-08-19 Parama Bagchi , Debotosh Bhattacharjee , Mita Nasipuri

Large amounts of deep optical images will be available in the near future, allowing statistically significant studies of low surface brightness structures such as intracluster light (ICL) in galaxy clusters. The detection of these…

Astrophysics of Galaxies · Physics 2021-05-12 A. Ellien , E. Slezak , N. Martinet , F. Durret , C. Adami , R. Gavazzi , C. R. Rabaça , C. Da Rocha , D. N. Epitácio Pereira

This paper proposes a novel localization algorithm using the reconfigurable intelligent surface (RIS) received signal, i.e., RIS information. Compared with BS received signal, i.e., BS information, RIS information offers higher dimension…

Signal Processing · Electrical Eng. & Systems 2024-05-29 Tuo Wu , Cunhua Pan , Kangda Zhi , Hong Ren , Maged Elkashlan , Cheng-Xiang Wang , Robert Schober , Xiaohu You