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Offline signature verification is one of the most challenging tasks in biometrics and document forensics. Unlike other verification problems, it needs to model minute but critical details between genuine and forged signatures, because a…

Computer Vision and Pattern Recognition · Computer Science 2017-10-03 Sounak Dey , Anjan Dutta , J. Ignacio Toledo , Suman K. Ghosh , Josep Llados , Umapada Pal

As generative AI models produce increasingly realistic output, both academia and industry are focusing on the ability to detect whether an output was generated by an AI model or not. Many of the research efforts and policy discourse are…

Cryptography and Security · Computer Science 2025-04-21 Houssam Kherraz

Many machine translation toolkits make use of a data preparation step wherein raw data is transformed into a tensor format that can be used directly by the trainer. This preparation step is increasingly at odds with modern research and…

Computation and Language · Computer Science 2023-08-16 Matt Post , Thamme Gowda , Roman Grundkiewicz , Huda Khayrallah , Rohit Jain , Marcin Junczys-Dowmunt

In recent years, deep learning techniques have been used to develop sign language recognition systems, potentially serving as a communication tool for millions of hearing-impaired individuals worldwide. However, there are inherent…

Computer Vision and Pattern Recognition · Computer Science 2024-08-15 Alvaro Leandro Cavalcante Carneiro , Denis Henrique Pinheiro Salvadeo , Lucas de Brito Silva

A set of features independent of character stroke direction and order variations is proposed for online handwritten character recognition. A method is developed that maps features like co-ordinates of points, orientations of strokes at…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Anand Sharma , A. G. Ramakrishnan

Encoded (or ciphered) manuscripts are a special type of historical documents that contain encrypted text. The automatic recognition of this kind of documents is challenging because: 1) the cipher alphabet changes from one document to…

Computer Vision and Pattern Recognition · Computer Science 2020-09-29 Mohamed Ali Souibgui , Alicia Fornés , Yousri Kessentini , Crina Tudor

Document digitization is becoming increasingly crucial. In this work, we propose a shape based approach for automatic stamp verification/detection in document images using an unsupervised feature learning. Given a small set of training…

Computer Vision and Pattern Recognition · Computer Science 2016-09-19 Yash Bhalgat , Mandar Kulkarni , Shirish Karande , Sachin Lodha

Learning from non-stationary data streams is a research direction that gains increasing interest as more data in form of streams becomes available, for example from social media, smartphones, or industrial process monitoring. Most…

Machine Learning · Computer Science 2023-02-09 Valerie Vaquet , Fabian Hinder , Johannes Brinkrolf , Barbara Hammer

Offline handwritten signature verification remains a challenging task, particularly in writer-independent settings where models must generalize across unseen individuals. Recent developments have highlighted the advantage of geometrically…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Elias N. Zois , Moises Diaz , Salem Said , Miguel A. Ferrer

The aim of the paper is to separate handwritten and printed text from a real document embedded with noise, graphics including annotations. Relying on run-length smoothing algorithm (RLSA), the extracted pseudo-lines and pseudo-words are…

Computer Vision and Pattern Recognition · Computer Science 2013-03-20 Abdel Belaïd , K. C. Santosh , Vincent Poulain D'Andecy

We study the problem of recognizing video sequences of fingerspelled letters in American Sign Language (ASL). Fingerspelling comprises a significant but relatively understudied part of ASL. Recognizing fingerspelling is challenging for a…

Computation and Language · Computer Science 2016-09-27 Taehwan Kim , Jonathan Keane , Weiran Wang , Hao Tang , Jason Riggle , Gregory Shakhnarovich , Diane Brentari , Karen Livescu

Synchrophasor technology or phasor measurement units (PMUs) are known to detect multiple type of oscillations or faults better than Supervisory Control and Data Acquisition (SCADA) systems, but the volume of Bigdata (e.g., 30-120 samples…

Machine Learning · Computer Science 2025-01-29 Zakaria El Mrabet , Daisy Flora Selvaraj , Prakash Ranganathan

Offline handwritten text line recognition is a hard task that requires both an efficient optical character recognizer and language model. Handwriting recognition state of the art methods are based on Long Short Term Memory (LSTM) recurrent…

Computer Vision and Pattern Recognition · Computer Science 2017-07-25 Bruno Stuner , Clément Chatelain , Thierry Paquet

Deep supervised learning algorithms typically require a large volume of labeled data to achieve satisfactory performance. However, the process of collecting and labeling such data can be expensive and time-consuming. Self-supervised…

Machine Learning · Computer Science 2024-07-16 Jie Gui , Tuo Chen , Jing Zhang , Qiong Cao , Zhenan Sun , Hao Luo , Dacheng Tao

Handwritten Text Recognition (HTR) models trained on synthetic handwriting often struggle to generalize to real text, and existing adaptation methods still require real samples from the target domain. In this work, we tackle the fully…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Carlos Garrido-Munoz , Aniello Panariello , Silvia Cascianelli , Angelo Porrello , Simone Calderara , Jorge Calvo-Zaragoza , Rita Cucchiara

The classification procedure of streaming data usually requires various ad hoc methods or particular heuristic models. We explore a novel non-parametric and systematic approach to analysis of heterogeneous sequential data. We demonstrate an…

Applications · Statistics 2016-06-08 A. B. Kormilitzin , K. E. A. Saunders , P. J. Harrison , J. R. Geddes , T. J. Lyons

The goal of this work is to detect and recognize sequences of letters signed using fingerspelling in British Sign Language (BSL). Previous fingerspelling recognition methods have not focused on BSL, which has a very different signing…

Computer Vision and Pattern Recognition · Computer Science 2022-11-17 K R Prajwal , Hannah Bull , Liliane Momeni , Samuel Albanie , Gül Varol , Andrew Zisserman

Freeform handwriting authentication verifies a person's identity from their writing style and habits in messy handwriting data. This technique has gained widespread attention in recent years as a valuable tool for various fields, e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Jingyao Wang , Luntian Mou , Changwen Zheng , Wen Gao

Handwriting recognition technology allows recognizing a written text from a given data. The recognition task can target letters, symbols, or words, and the input data can be a digital image or recorded by various sensors. A wide range of…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Hilda Azimi , Steven Chang , Jonathan Gold , Koray Karabina

Since American Sign Language (ASL) has no standard written form, Deaf signers frequently share videos in order to communicate in their native language. However, since both hands and face convey critical linguistic information in signed…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Zhaoyang Xia , Carol Neidle , Dimitris N. Metaxas