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The integration of multimodal models into Presentation Attack Detection (PAD) for ID Documents represents a significant advancement in biometric security. Traditional PAD systems rely solely on visual features, which often fail to detect…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Marina Villanueva , Juan M. Espin , Juan E. Tapia

Intrusion detection systems (IDS) are widely studied by researchers nowadays due to the dramatic growth in network-based technologies. Policy violations and unauthorized access is in turn increasing which makes intrusion detection systems…

Networking and Internet Architecture · Computer Science 2015-07-27 Yasmen Wahba , Ehab ElSalamouny , Ghada ElTaweel

The vulnerability of facial recognition systems to face morphing attacks is well known. Many different approaches for morphing attack detection have been proposed in the scientific literature. However, the morphing attack detection…

Cryptography and Security · Computer Science 2020-04-06 Ulrich Scherhag , Christian Rathgeb , Johannes Merkle , Christoph Busch

Remote identity verification is essential for modern digital security; however, it remains highly vulnerable to sophisticated Presentation Attacks (PAs) that utilise forged or manipulated identity documents. Although Deep Learning (DL) has…

Cryptography and Security · Computer Science 2025-11-11 Esteban M. Ruiz , Juan E. Tapia , Reinel T. Soto , Christoph Busch

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

Face anti-spoofing is critical to the security of face recognition systems. Depth supervised learning has been proven as one of the most effective methods for face anti-spoofing. Despite the great success, most previous works still…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Zezheng Wang , Zitong Yu , Chenxu Zhao , Xiangyu Zhu , Yunxiao Qin , Qiusheng Zhou , Feng Zhou , Zhen Lei

The adversarial robustness of a model is its ability to resist adversarial attacks in the form of small perturbations to input data. Universal adversarial attack methods such as Fast Sign Gradient Method (FSGM) and Projected Gradient…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Xiaohu Lu , Hayder Radha

In the last few years, face morphing has been shown to be a complex challenge for Face Recognition Systems (FRS). Thus, the evaluation of other biometric modalities such as fingerprint, iris, and others must be explored and evaluated to…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Juan E. Tapia , Sebastian Gonzalez , Daniel Benalcazar , Christoph Busch

We have witnessed rapid advances in both face presentation attack models and presentation attack detection (PAD) in recent years. Compared to widely studied 2D face presentation attacks (e.g. printed photos and video replays), 3D face…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Shan Jia , Xin Li , Chuanbo Hu , Zhengquan Xu

3D mask presentation attack detection is crucial for protecting face recognition systems against the rising threat of 3D mask attacks. While most existing methods utilize multimodal features or remote photoplethysmography (rPPG) signals to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Fangling Jiang , Qi Li , Bing Liu , Weining Wang , Caifeng Shan , Zhenan Sun , Ming-Hsuan Yang

Face presentation attack detection (PAD) is an essential measure to protect face recognition systems from being spoofed by malicious users and has attracted great attention from both academia and industry. Although most of the existing…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Zhi Li , Haoliang Li , Xin Luo , Yongjian Hu , Kwok-Yan Lam , Alex C. Kot

LiDAR-based place recognition serves as a crucial enabler for long-term autonomy in robotics and autonomous driving systems. Yet, prevailing methodologies relying on handcrafted feature extraction face dual challenges: (1) Inconsistent…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Xiaohui Jiang , Haijiang Zhu , Chade Li , Fulin Tang , Ning An

Biometric technologies are widely adopted in security, legal, and financial systems. Face recognition can authenticate a person based on the unique facial features such as shape and texture. However, recent works have demonstrated the…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Poulami Raha , Yeongnam Chae

We introduce a novel approach to counter adversarial attacks, namely, image resampling. Image resampling transforms a discrete image into a new one, simulating the process of scene recapturing or rerendering as specified by a geometrical…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Yue Cao , Tianlin Li , Xiaofeng Cao , Ivor Tsang , Yang Liu , Qing Guo

Binarized statistical image features (BSIF) have been successfully used for texture analysis in many computer vision tasks, including iris recognition and biometric presentation attack detection. One important point is that all applications…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Adam Czajka , Daniel Moreira , Kevin W. Bowyer , Patrick J. Flynn

Near-infrared (NIR) face recognition systems, which can operate effectively in low-light conditions or in the presence of makeup, exhibit vulnerabilities when subjected to physical adversarial attacks. To further demonstrate the potential…

Computer Vision and Pattern Recognition · Computer Science 2025-04-23 Songyan Xie , Jinghang Wen , Encheng Su , Qiucheng Yu

Recently, significant progress has been made in face presentation attack detection (PAD), which aims to secure face recognition systems against presentation attacks, owing to the availability of several face PAD datasets. However, all…

Computer Vision and Pattern Recognition · Computer Science 2023-04-12 Meiling Fang , Marco Huber , Naser Damer

For applications such as airport border control, biometric technologies that can process many capture subjects quickly, efficiently, with weak supervision, and with minimal discomfort are desirable. Facial recognition is particularly…

Computer Vision and Pattern Recognition · Computer Science 2016-05-11 Ethan M. Rudd , Manuel Gunther , Terrance E. Boult

Intrusion Detection System (IDS) is one of the security measures being used as an additional defence mechanism to prevent the security breaches on web. It has been well known methodology for detecting network-based attacks but still…

Cryptography and Security · Computer Science 2018-08-14 Nancy Agarwal , Syed Zeeshan Hussain