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Recent advances in AI technology have made the forgery of digital images and videos easier, and it has become significantly more difficult to identify such forgeries. These forgeries, if disseminated with malicious intent, can negatively…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Chia-Mu Yu , Ching-Tang Chang , Yen-Wu Ti

Biometric authentication by means of handwritten signatures is a challenging pattern recognition task, which aims to infer a writer model from only a handful of genuine signatures. In order to make it more difficult for a forger to attack…

Computer Vision and Pattern Recognition · Computer Science 2018-10-18 Paul Maergner , Vinaychandran Pondenkandath , Michele Alberti , Marcus Liwicki , Kaspar Riesen , Rolf Ingold , Andreas Fischer

Sign language recognition is important for natural and convenient communication between deaf community and hearing majority. We take the highly efficient initial step of automatic fingerspelling recognition system using convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2015-10-15 Byeongkeun Kang , Subarna Tripathi , Truong Q. Nguyen

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

In this paper, a new method for offline handwritten signature retrieval is based on curvelet transform is proposed. Many applications in image processing require similarity retrieval of an image from a large collection of images. In such…

Computer Vision and Pattern Recognition · Computer Science 2011-04-12 M. S. Shirdhonkar , Manesh B. Kokare

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

Offline Signature Verification (OSV) is a fundamental biometric task across various forensic, commercial and legal applications. The underlying task at hand is to carefully model fine-grained features of the signatures to distinguish…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Soumitri Chattopadhyay , Siladittya Manna , Saumik Bhattacharya , Umapada Pal

The use of features extracted using a deep convolutional neural network (CNN) combined with a writer-dependent (WD) SVM classifier resulted in significant improvement in performance of handwritten signature verification (HSV) when compared…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Victor L. F. Souza , Adriano L. I. Oliveira , Robert Sabourin

Though having achieved some progresses, the hand-crafted texture features, e.g., LBP [23], LBP-TOP [11] are still unable to capture the most discriminative cues between genuine and fake faces. In this paper, instead of designing feature by…

Computer Vision and Pattern Recognition · Computer Science 2014-08-27 Jianwei Yang , Zhen Lei , Stan Z. Li

Fingerprint recognition is often a game-changing step in establishing evidence against criminals. However, we are increasingly finding that criminals deliberately alter their fingerprints in a variety of ways to make it difficult for…

Computer Vision and Pattern Recognition · Computer Science 2021-01-01 Jaouhar Fattahi , Mohamed Mejri

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

Online signature verification (OSV) is one of the most challenging tasks in writer identification and digital forensics. Owing to the large intra-individual variability, there is a critical requirement to accurately learn the intra-personal…

Computer Vision and Pattern Recognition · Computer Science 2019-05-22 Chandra Sekhar , Prerana Mukherjee , Devanur S Guru , Viswanath Pulabaigari

The text-independent approach to writer identification does not require the writer to write some predetermined text. Previous research on text-independent writer identification has been based on identifying writer-specific features designed…

Computer Vision and Pattern Recognition · Computer Science 2020-09-11 Hung Tuan Nguyen , Cuong Tuan Nguyen , Takeya Ino , Bipin Indurkhya , Masaki Nakagawa

Inspired by the great success of recurrent neural networks (RNNs) in sequential modeling, we introduce a novel RNN system to improve the performance of online signature verification. The training objective is to directly minimize…

Computer Vision and Pattern Recognition · Computer Science 2017-05-22 Songxuan Lai , Lianwen Jin , Weixin Yang

We present an object detection based approach to localize handwritten regions from documents, which initially aims to enhance the anonymization during the data transmission. The concatenated fusion of original and preprocessed images…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Yuli Wu , Yucheng Hu , Suting Miao

Deep Learning as a field has been successfully used to solve a plethora of complex problems, the likes of which we could not have imagined a few decades back. But as many benefits as it brings, there are still ways in which it can be used…

Computer Vision and Pattern Recognition · Computer Science 2021-06-25 Samay Pashine , Sagar Mandiya , Praveen Gupta , Rashid Sheikh

Fingerprint recognition has been utilized for cellphone authentication, airport security and beyond. Many different features and algorithms have been proposed to improve fingerprint recognition. In this paper, we propose an end-to-end deep…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Shervin Minaee , Elham Azimi , Amirali Abdolrashidi

Online signature verification plays a pivotal role in security infrastructures. However, conventional online signature verification models pose significant risks to data privacy, especially during training processes. To mitigate these…

Cryptography and Security · Computer Science 2024-06-12 Lingfeng Zhang , Yuheng Guo , Yepeng Ding , Hiroyuki Sato

Online signature verification (OSV) requires distinguishing skilled forgeries from genuine samples under high intra-class variability and with very few enrollment samples. Existing deep learning methods operate directly on raw temporal…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Himanshu Singhal , Suresh Sundaram

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