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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

Image registration is a key task in medical imaging applications, allowing to represent medical images in a common spatial reference frame. Current approaches to image registration are generally based on the assumption that the content of…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Riccardo Taiello , Melek Önen , Francesco Capano , Olivier Humbert , Marco Lorenzi

Handwritten Text Recognition (HTR) is an open problem at the intersection of Computer Vision and Natural Language Processing. The main challenges, when dealing with historical manuscripts, are due to the preservation of the paper support,…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Silvia Cascianelli , Vittorio Pippi , Martin Maarand , Marcella Cornia , Lorenzo Baraldi , Christopher Kermorvant , Rita Cucchiara

Researchers continually perform corroborative tests to classify ancient historical documents based on the physical materials of their writing surfaces. However, these tests, often performed on-site, requires actual access to the manuscript…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Thomas Reynolds , Maruf A. Dhali , Lambert Schomaker

While text-to-image synthesis currently enjoys great popularity among researchers and the general public, the security of these models has been neglected so far. Many text-guided image generation models rely on pre-trained text encoders…

Machine Learning · Computer Science 2023-08-10 Lukas Struppek , Dominik Hintersdorf , Kristian Kersting

Biometrics technologies are gaining popularity today since they provide more reliable and efficient means of authentication and verification. Keystroke Dynamics is one of the famous biometric technologies, which will try to identify the…

Cryptography and Security · Computer Science 2009-10-06 D. Shanmugapriya , G. Padmavathi

CAPTCHA (Completely Automated Public Truing test to tell Computers and Humans Apart) is a widely used technology to distinguish real users and automated users such as bots. However, the advance of AI technologies weakens many CAPTCHA tests…

Machine Learning · Computer Science 2021-01-08 Rulin Shao , Zhouxing Shi , Jinfeng Yi , Pin-Yu Chen , Cho-Jui Hsieh

This paper presents a novel application to detect counterfeit identity documents forged by a scan-printing operation. Texture analysis approaches are proposed to extract validation features from security background that is usually printed…

Computer Vision and Pattern Recognition · Computer Science 2017-08-22 Albert Berenguel , Oriol Ramos Terrades , Josep Lladós , Cristina Cañero

The generation of images of realistic looking, readable handwritten text is a challenging task which is referred to as handwritten text generation (HTG). Given a string and examples from a writer, the goal is to synthesize an image…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Kai Brandenbusch

Making topological authentication from theory to practical application is an important and challenging task. More and more researchers pay attention on coming quantum computation, privacy data protection, lattices and cryptography. Research…

Cryptography and Security · Computer Science 2022-02-09 Bing Yao , Jing Su , Fei Ma , Hongyu Wang , Chao Yang

The analysis of digitized historical manuscripts is typically addressed by paleographic experts. Writer identification refers to the classification of known writers while writer retrieval seeks to find the writer by means of image…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Vincent Christlein , Isabelle Marthot-Santaniello , Martin Mayr , Anguelos Nicolaou , Mathias Seuret

Interactive proof assistants are computer programs carefully constructed to check a human-designed proof of a mathematical claim with high confidence in the implementation. However, this only validates truth of a formal claim, which may…

Programming Languages · Computer Science 2022-05-17 Colin S. Gordon , Sergey Matskevich

Currently, the destruction of the sequence structure in handwritten text has become one of the main bottlenecks restricting the recognition task. The typical situations include additional specific markers (the text swapping modification)…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Zi-Rui Wang

The advent of instruction-tuned language models that convincingly mimic human writing poses a significant risk of abuse. However, such abuse may be counteracted with the ability to detect whether a piece of text was composed by a language…

Computation and Language · Computer Science 2024-05-09 Rafael Rivera Soto , Kailin Koch , Aleem Khan , Barry Chen , Marcus Bishop , Nicholas Andrews

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

Handwritten Text Recognition (HTR) is still a challenging problem because it must deal with two important difficulties: the variability among writing styles, and the scarcity of labelled data. To alleviate such problems, synthetic data…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Lei Kang , Marçal Rusiñol , Alicia Fornés , Pau Riba , Mauricio Villegas

Root of Trust Identification (RTI) refers to determining whether a given security service or task is being performed by the particular root of trust (e.g., a TEE) within a specific physical device. Despite its importance, this problem has…

Cryptography and Security · Computer Science 2020-10-28 Ivan De Oliveira Nunes , Xuhua Ding , Gene Tsudik

Diffusion models have shown superior performance in image generation and manipulation, but the inherent stochasticity presents challenges in preserving and manipulating image content and identity. While previous approaches like DreamBooth…

Computer Vision and Pattern Recognition · Computer Science 2023-04-20 Inhwa Han , Serin Yang , Taesung Kwon , Jong Chul Ye

The use of physical documents is inconvenient and inefficient in today's world, which motivates us to move towards the use of digital documents. Digital documents can solve many problems of inefficiency of data management but proving their…

Cryptography and Security · Computer Science 2021-11-16 Chanaka Lakmal , Sachithra Dangalla , Chandu Herath , Chamin Wickramarathna , Gihan Dias , Shantha Fernando

With the rise of advanced natural language models like GPT, distinguishing between human-written and GPT-generated text has become increasingly challenging and crucial across various domains, including academia. The long-standing issue of…

Computation and Language · Computer Science 2025-10-14 A. Selvioğlu , V. Adanova , M. Atagoziev
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