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Signature verification has been one of the major researched areas in the field of computer vision. Many financial and legal organizations use signature verification as access control and authentication. Signature images are not rich in…

Computer Vision and Pattern Recognition · Computer Science 2021-08-05 Anamika Jain , Satish Kumar Singh , Krishna Pratap Singh

A major limitation to advances in fingerprint spoof detection is the lack of publicly available, large-scale fingerprint spoof datasets, a problem which has been compounded by increased concerns surrounding privacy and security of biometric…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Steven A. Grosz , Anil K. Jain

In recent years, deep learning has greatly streamlined the process of manipulating photographic face images. Aware of the potential dangers, researchers have developed various tools to spot these counterfeits. Yet, none asks the fundamental…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Mian Zou , Baosheng Yu , Yibing Zhan , Siwei Lyu , Kede Ma

A practical face recognition system demands not only high recognition performance, but also the capability of detecting spoofing attacks. While emerging approaches of face anti-spoofing have been proposed in recent years, most of them do…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Xiaoguang Tu , Hengsheng Zhang , Mei Xie , Yao Luo , Yuefei Zhang , Zheng Ma

Handwriting signatures, as an important means of identity recognition, are widely used in multiple fields such as financial transactions, commercial contracts and personal affairs due to their legal effect and uniqueness. In forensic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Wanghui Xiao

Handwritten Signature Verification (HSV) systems distinguish between genuine and forged signatures. Traditional HSV development involves a static batch configuration, constraining the system's ability to model signatures to the limited data…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Kecia G. de Moura , Rafael M. O. Cruz , Robert Sabourin

Handwritten signature verification, crucial for legal and financial institutions, faces challenges including inter-writer similarity, intra-writer variations, and limited signature samples. To address these, we introduce the MultiScale…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Fu-Hsien Huang , Hsin-Min Lu

Online fraud often involves identity theft. Since most security measures are weak or can be spoofed, we investigate a more nuanced and less explored avenue: behavioral biometrics via handwriting movements. This kind of data can be used to…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Luis A. Leiva , Moises Diaz , Miguel A. Ferrer , Réjean Plamondon

Detecting AI-generated images, particularly deepfakes, has become increasingly crucial, with the primary challenge being the generalization to previously unseen manipulation methods. This paper tackles this issue by leveraging the forgery…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Wentang Song , Zhiyuan Yan , Yuzhen Lin , Taiping Yao , Changsheng Chen , Shen Chen , Yandan Zhao , Shouhong Ding , Bin Li

Deepfake detection faces a critical generalization hurdle, with performance deteriorating when there is a mismatch between the distributions of training and testing data. A broadly received explanation is the tendency of these detectors to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Zhiyuan Yan , Yuhao Luo , Siwei Lyu , Qingshan Liu , Baoyuan Wu

Cross-domain biometrics has been emerging as a new necessity, which poses several additional challenges, including harsh illumination changes, noise, pose variation, among others. In this paper, we explore approaches to cross-domain face…

Computer Vision and Pattern Recognition · Computer Science 2016-11-18 Guilherme Folego , Marcus A. Angeloni , José Augusto Stuchi , Alan Godoy , Anderson Rocha

This systematic literature review examines the role of machine learning in fraud detection within digital banking, synthesizing evidence from 118 peer-reviewed studies and institutional reports. Following the PRISMA guidelines, the review…

Machine Learning · Computer Science 2025-10-08 Md Zahin Hossain George , Md Khorshed Alam , Md Tarek Hasan

With the deepening trend of paperless workflows, signatures as a means of identity authentication are gradually shifting from traditional ink-on-paper to electronic formats.Despite the availability of dynamic pressure-sensitive and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 RuiQiang Zhang , Zehua Ma , Guanjie Wang , Chang Liu , Hengyi Wang , Weiming Zhang

In this work, a feature extraction method for offline signature verification is presented that harnesses the power of sparse representation in order to deliver state-of-the-art verification performance in several signature datasets like…

Computer Vision and Pattern Recognition · Computer Science 2019-01-24 Elias N. Zois , Dimitrios Tsourounis , Ilias Theodorakopoulos , Anastasios Kesidis , George Economou

Image manipulation and forgery detection have been a topic of research for more than a decade now. New-age tools and large-scale social platforms have given space for manipulated media to thrive. These media can be potentially dangerous and…

Computer Vision and Pattern Recognition · Computer Science 2021-11-25 Umar Masud , Anupam Agarwal

The generalization of deepfake detectors to unseen manipulation techniques remains a challenge for practical deployment. Although many approaches adapt foundation models by introducing significant architectural complexity, this work…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Andrii Yermakov , Jan Cech , Jiri Matas , Mario Fritz

The existing deepfake detection methods have reached a bottleneck in generalizing to unseen forgeries and manipulation approaches. Based on the observation that the deepfake detectors exhibit a preference for overfitting the specific…

Computer Vision and Pattern Recognition · Computer Science 2023-07-31 Harry Cheng , Yangyang Guo , Tianyi Wang , Liqiang Nie , Mohan Kankanhalli

The rapid progress in synthetic image generation and manipulation has now come to a point where it raises significant concerns for the implications towards society. At best, this leads to a loss of trust in digital content, but could…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Andreas Rössler , Davide Cozzolino , Luisa Verdoliva , Christian Riess , Justus Thies , Matthias Nießner

Facial manipulation by deep fake has caused major security risks and raised severe societal concerns. As a countermeasure, a number of deep fake detection methods have been proposed recently. Most of them model deep fake detection as a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Aakash Varma Nadimpalli , Ajita Rattani

The growing diversity of digital face manipulation techniques has led to an urgent need for a universal and robust detection technology to mitigate the risks posed by malicious forgeries. We present a blended-based detection approach that…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Yuyang Sun , Huy H. Nguyen , Chun-Shien Lu , ZhiYong Zhang , Lu Sun , Isao Echizen