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Reasoning about distance is indispensable for establishing or avoiding contact in manipulation tasks. To this end, we present an online approach for learning implicit representations of signed distance using piecewise polynomial basis…

Robotics · Computer Science 2024-05-09 Ante Marić , Yiming Li , Sylvain Calinon

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

Research on Offline Handwritten Signature Verification explored a large variety of handcrafted feature extractors, ranging from graphology, texture descriptors to interest points. In spite of advancements in the last decades, performance of…

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

The skeleton of a digital image is a compact representation of its topology, geometry, and scale. It has utility in many computer vision applications, such as image description, segmentation, and registration. However, skeletonization has…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Martin J. Menten , Johannes C. Paetzold , Veronika A. Zimmer , Suprosanna Shit , Ivan Ezhov , Robbie Holland , Monika Probst , Julia A. Schnabel , Daniel Rueckert

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

Online goal recognition in continuous domains poses two central challenges: efficiently encoding large trajectories and effectively comparing them. Recent work addresses these challenges by using custom state-space representations and…

Artificial Intelligence · Computer Science 2026-05-11 Douglas Tesch , Nathan Gavenski , Leonardo Amado , Odinaldo Rodrigues , Felipe Meneguzzi

This paper presents an effective method for fingerprint verification based on a data mining technique called minutiae clustering and a graph-theoretic approach to analyze the process of fingerprint comparison to give a feature space…

Computer Vision and Pattern Recognition · Computer Science 2010-06-15 Minakshi Gogoi , D K Bhattacharyya

Sliding window is one direct way to extend a successful recognition system to handle the more challenging detection problem. While action recognition decides only whether or not an action is present in a pre-segmented video sequence, action…

Computer Vision and Pattern Recognition · Computer Science 2015-12-29 Moustafa Meshry , Mohamed E. Hussein , Marwan Torki

Redactable signature allows anyone to remove parts of a signed message without invalidating the signature. The need to prove the validity of digital documents issued by governments is increasing. When governments disclose documents, they…

Cryptography and Security · Computer Science 2023-04-12 Masayuki Tezuka , Keisuke Tanaka

We consider the problem of detecting and locating modifications in signed data to ensure partial data integrity. We assume that the data is divided into $n$ blocks (not necessarily of the same size) and that a threshold $d$ is given for the…

Cryptography and Security · Computer Science 2022-08-03 Thaís Bardini Idalino , Lucia Moura , Ricardo Felipe Custódio , Daniel Panario

Using Low Cost Portable Eye Tracking for Biometric Identification Or Verification: Eye tracking technologies have in recent years become available outside of specialised labs, and are starting to become integrated in tablets and virtual…

Human-Computer Interaction · Computer Science 2017-05-09 Per Bækgaard , Michael Kai Petersen , Jakob Eg Larsen

The quantum digital signature protocol offers a replacement for most aspects of public-key digital signatures ubiquitous in today's digital world. A major advantage of a quantum-digital-signatures protocol is that it can have…

Quantum Physics · Physics 2025-01-16 Joseph C. Chapman , Muneer Alshowkan , Bing Qi , Nicholas A. Peters

Skeleton-based temporal action segmentation is a fundamental yet challenging task, playing a crucial role in enabling intelligent systems to perceive and respond to human activities. While fully-supervised methods achieve satisfactory…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Hongsong Wang , Yiqin Shen , Pengbo Yan , Jie Gui

The ultimate aim of handwriting recognition is to make computers able to read and/or authenticate human written texts, with a performance comparable to or even better than that of humans. Reading means that the computer is given a piece of…

Computer Vision and Pattern Recognition · Computer Science 2012-06-26 Manal A. Abdullah , Lulwah M. Al-Harigy , Hanadi H. Al-Fraidi

An offline signature-based fuzzy vault (OSFV) is a bio-cryptographic implementation that uses handwritten signature images as biometrics instead of traditional passwords to secure private cryptographic keys. Having a reliable OSFV…

Computer Vision and Pattern Recognition · Computer Science 2014-09-10 George S. Eskander , Robert Sabourin , Eric Granger

Offline handwritten mathematical expression recognition is often considered much harder than its online counterpart due to the absence of temporal information. In order to take advantage of the more mature methods for online recognition and…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Chungkwong Chan

Objective: The spinous process angle (SPA) is one of the essential parameters to denote three-dimensional (3-D) deformity of spine. We propose an automatic segmentation method based on Stacked Hourglass Network (SHN) to detect the spinous…

Image and Video Processing · Electrical Eng. & Systems 2021-05-25 Hong-Ye Zeng , Song-Han Ge , Yu-Chong Gao , De-Sen Zhou , Kang Zhou , Xu-Ming He , Edmond Lou , Rui Zheng

This paper addresses the problem of segmenting a stream of graph signals: we aim to detect changes in the mean of a multivariate signal defined over the nodes of a known graph. We propose an offline method that relies on the concept of…

Machine Learning · Computer Science 2024-03-01 Alejandro de la Concha , Nicolas Vayatis , Argyris Kalogeratos

This paper suggests a message authentication scheme, which can be efficiently used for secure digital signature creation. The algorithm used here is an adjusted union of the concepts which underlie projective geometry and group structure on…

Cryptography and Security · Computer Science 2017-08-17 Abhinav Aggarwal

In this paper, we propose a method that estimates a gait index for a sequence of skeletons. Our system is a stack of an encoder and a decoder that are formed by Long Short-Term Memories (LSTMs). In the encoding stage, the characteristics of…

Computer Vision and Pattern Recognition · Computer Science 2019-08-21 Trong Nguyen Nguyen , Huu Hung Huynh , Jean Meunier