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This paper presents an accurate method for verifying online signatures. The main difficulty of signature verification come from: (1) Lacking enough training samples (2) The methods must be spatial change invariant. To deal with these…

Computer Vision and Pattern Recognition · Computer Science 2018-06-27 Mohammad Hajizadeh Saffar , Mohsen Fayyaz , Mohammad Sabokrou , Mahmood Fathy

Online signature verification technologies, such as those available in banks and post offices, rely on dedicated digital devices such as tablets or smart pens to capture, analyze and verify signatures. In this paper, we suggest a novel…

Cryptography and Security · Computer Science 2016-12-20 Ben Nassi , Alona Levy , Yuval Elovici , Erez Shmueli

Deep learning has become a breathtaking technology in the last years, overcoming traditional handcrafted approaches and even humans for many different tasks. However, in some tasks, such as the verification of handwritten signatures, the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 Ruben Tolosana , Ruben Vera-Rodriguez , Julian Fierrez , Javier Ortega-Garcia

Handwritten signature verification poses a formidable challenge in biometrics and document authenticity. The objective is to ascertain the authenticity of a provided handwritten signature, distinguishing between genuine and forged ones.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Fatih Ozyurt , Jafar Majidpour , Tarik A. Rashid , Canan Koc

The area of Handwritten Signature Verification has been broadly researched in the last decades, but remains an open research problem. The objective of signature verification systems is to discriminate if a given signature is genuine…

Computer Vision and Pattern Recognition · Computer Science 2019-01-25 Luiz G. Hafemann , Robert Sabourin , Luiz S. Oliveira

In automatic signature verification, questioned specimens are usually compared with reference signatures. In writer-dependent schemes, a number of reference signatures are required to build up the individual signer model while a…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Moises Diaz , Miguel A. Ferrer , Soodamani Ramalingam , Richard Guest

Automated signature verification is a critical biometric technique used in banking, identity authentication, and legal documentation. Despite the notable progress achieved by deep learning methods, most approaches in offline signature…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Matheus Ramos Parracho

This version is ***superseded*** by a full version that can be found at http://www.itu.dk/people/pagh/papers/mining-jour.pdf, which contains stronger theoretical results and fixes a mistake in the reporting of experiments. Abstract:…

Data Structures and Algorithms · Computer Science 2010-02-17 Andrea Campagna , Rasmus Pagh

Performance comparisons between File Signatures and Inverted Files for text retrieval have previously shown several significant shortcomings of file signatures relative to inverted files. The inverted file approach underpins most…

Information Retrieval · Computer Science 2012-04-25 Shlomo Geva , Christopher M. De Vries

Verifying the identity of a person using handwritten signatures is challenging in the presence of skilled forgeries, where a forger has access to a person's signature and deliberately attempt to imitate it. In offline (static) signature…

Computer Vision and Pattern Recognition · Computer Science 2017-05-17 Luiz G. Hafemann , Robert Sabourin , Luiz S. Oliveira

In this work we investigate the use of the Signature Transform in the context of Learning. Under this assumption, we advance a supervised framework that potentially provides state-of-the-art classification accuracy with the use of few…

Computer Vision and Pattern Recognition · Computer Science 2022-05-20 J. de Curtò , I. de Zarzà , Hong Yan , Carlos T. Calafate

Learning to rank has recently emerged as an attractive technique to train deep convolutional neural networks for various computer vision tasks. Pairwise ranking, in particular, has been successful in multi-label image classification,…

Computer Vision and Pattern Recognition · Computer Science 2017-06-02 Yuncheng Li , Yale Song , Jiebo Luo

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

Writer independent offline signature verification is one of the most challenging tasks in pattern recognition as there is often a scarcity of training data. To handle such data scarcity problem, in this paper, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Siladittya Manna , Soumitri Chattopadhyay , Saumik Bhattacharya , Umapada Pal

The area of Handwritten Signature Verification has been broadly researched in the last decades, but remains an open research problem. In offline (static) signature verification, the dynamic information of the signature writing process is…

Computer Vision and Pattern Recognition · Computer Science 2019-01-23 Sourya Dipta Das , Himanshu Ladia , Vaibhav Kumar , Shivansh Mishra

Graphs provide a powerful representation formalism that offers great promise to benefit tasks like handwritten signature verification. While most state-of-the-art approaches to signature verification rely on fixed-size representations,…

Computer Vision and Pattern Recognition · Computer Science 2019-06-26 Paul Maergner , Nicholas R. Howe , Kaspar Riesen , Rolf Ingold , Andreas Fischer

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

Assessing image quality is crucial in image processing tasks such as compression, super-resolution, and denoising. While subjective assessments involving human evaluators provide the most accurate quality scores, they are impractical for…

Multimedia · Computer Science 2025-03-26 Shima Mohammadi , João Ascenso

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

We present a novel learned keypoint detection method designed to maximize the number of correct matches for the task of non-rigid image correspondence. Our training framework uses true correspondences, obtained by matching annotated image…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Welerson Melo , Guilherme Potje , Felipe Cadar , Renato Martins , Erickson R. Nascimento
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