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Convolutional Neural Networks (CNNs) are being increasingly used to address the problem of iris presentation attack detection. In this work, we propose attention-guided iris presentation attack detection (AG-PAD) to augment CNNs with…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Cunjian Chen , Arun Ross

With the rapid advancements in technology, automation has emerged as the future of human endeavors. From simple tasks like attendance management to complex security systems, automation has the potential to revolutionize various aspects of…

Cryptography and Security · Computer Science 2023-07-11 Shravan Bhat , Nithin R , Pranav S

This report presents our team's technical solution for participating in Track 3 of the 2024 ECCV ROAD++ Challenge. The task of Track 3 is atomic activity recognition, which aims to identify 64 types of atomic activities in road scenes based…

Computer Vision and Pattern Recognition · Computer Science 2024-10-31 Ruyang Li , Tengfei Zhang , Heng Zhang , Tiejun Liu , Yanwei Wang , Xuelei Li

This report details our solution to the Google AI Open Images Challenge 2019 Object Detection Track. Based on our detailed analysis on the Open Images dataset, it is found that there are four typical features: large-scale, hierarchical tag…

Computer Vision and Pattern Recognition · Computer Science 2019-10-29 Xingyuan Bu , Junran Peng , Changbao Wang , Cunjun Yu , Guoliang Cao

Diversity and unpredictability of artifacts potentially presented to an iris sensor calls for presentation attack detection methods that are agnostic to specificity of presentation attack instruments. This paper proposes a method that…

Computer Vision and Pattern Recognition · Computer Science 2020-08-06 Zhaoyuan Fang , Adam Czajka , Kevin W. Bowyer

The Imagenet Large Scale Visual Recognition Challenge (ILSVRC) is the one of the most important big data challenges to date. We participated in the object detection track of ILSVRC 2014 and received the fourth place among the 38 teams. We…

Computer Vision and Pattern Recognition · Computer Science 2014-10-07 Cewu Lu , Hao Chen , Qifeng Chen , Hei Law , Yao Xiao , Chi-Keung Tang

This paper describes the proposed methodology, data used and the results of our participation in the ChallengeTrack 2 (Expr Challenge Track) of the Affective Behavior Analysis in-the-wild (ABAW) Competition 2020. In this competition, we…

Computer Vision and Pattern Recognition · Computer Science 2020-10-06 Hafiq Anas , Bacha Rehman , Wee Hong Ong

Pedestrian detection in crowd scenes poses a challenging problem due to the heuristic defined mapping from anchors to pedestrians and the conflict between NMS and highly overlapped pedestrians. The recently proposed end-to-end…

Computer Vision and Pattern Recognition · Computer Science 2021-02-19 Matthieu Lin , Chuming Li , Xingyuan Bu , Ming Sun , Chen Lin , Junjie Yan , Wanli Ouyang , Zhidong Deng

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

Iris recognition is increasingly used in large-scale applications. As a result, presentation attack detection for iris recognition takes on fundamental importance. This survey covers the diverse research literature on this topic. Different…

Computer Vision and Pattern Recognition · Computer Science 2018-06-14 Adam Czajka , Kevin W. Bowyer

Biometric footstep recognition, based on a person's unique pressure patterns under their feet during walking, is an emerging field with growing applications in security and safety. However, progress in this area has been limited by the lack…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Robyn Larracy , Eve MacDonald , Angkoon Phinyomark , Saeid Rezaei , Mahdi Laghaei , Ali Hajighasem , Aaron Tabor , Erik Scheme

The ever-increasing use of artificial intelligence in autonomous systems has significantly contributed to advance the research on multi-object tracking, adopted in several real-time applications (e.g., autonomous driving, surveillance…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 Edoardo Cittadini , Alessandro De Siena , Giorgio Buttazzo

The last decade has brought forward many great contributions regarding presentation attack detection for the domain of finger and hand vein biometrics. Among those contributions, one is able to find a variety of different attack databases…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Johannes Schuiki , Michael Linortner , Georg Wimmer , Andreas Uhl

The 55th Design Automation Conference (DAC) held its first System Design Contest (SDC) in 2018. SDC'18 features a lower power object detection challenge (LPODC) on designing and implementing novel algorithms based object detection in images…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Xiaowei Xu , Xinyi Zhang , Bei Yu , X. Sharon Hu , Christopher Rowen , Jingtong Hu , Yiyu Shi

Despite significant progress in optical character recognition (OCR) and computer vision systems, robustly recognizing text and identifying people in images taken in unconstrained \emph{in-the-wild} environments remain an ongoing challenge.…

Computer Vision and Pattern Recognition · Computer Science 2024-02-14 Jacob Tyo , Motolani Olarinre , Youngseog Chung , Zachary C. Lipton

Advanced Persistent Threats (APTs) pose a significant challenge in cybersecurity due to their stealthy and long-term nature. Modern supervised learning methods require extensive labeled data, which is often scarce in real-world…

Machine Learning · Computer Science 2025-11-26 Sidahmed Benabderrahmane , James Cheney , Talal Rahwan

In recent decades, challenges have become very popular in scientific research as these are crowdsourcing schemes. In particular, challenges are essential for developing machine learning algorithms. For the challenges settings, it is vital…

Machine Learning · Computer Science 2023-05-19 Sergio Nava-Muñoz , Mario Graff Guerrero , Hugo Jair Escalante

The diffusion of fingerprint verification systems for security applications makes it urgent to investigate the embedding of software-based presentation attack detection algorithms (PAD) into such systems. Companies and institutions need to…

Cryptography and Security · Computer Science 2021-10-22 Marco Micheletto , Gian Luca Marcialis , Giulia Orrù , Fabio Roli

In the current landscape of biometrics and surveillance, the ability to accurately recognize faces in uncontrolled settings is paramount. The Watchlist Challenge addresses this critical need by focusing on face detection and open-set…