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Activity recognition computer vision algorithms can be used to detect the presence of autism-related behaviors, including what are termed "restricted and repetitive behaviors", or stimming, by diagnostic instruments. The limited data that…

Computer Vision and Pattern Recognition · Computer Science 2021-01-12 Peter Washington , Aaron Kline , Onur Cezmi Mutlu , Emilie Leblanc , Cathy Hou , Nate Stockham , Kelley Paskov , Brianna Chrisman , Dennis P. Wall

Neural networks need big annotated datasets for training. However, manual annotation can be too expensive or even unfeasible for certain tasks, like multi-person 2D pose estimation with severe occlusions. A remedy for this is synthetic data…

Computer Vision and Pattern Recognition · Computer Science 2019-08-05 David T. Hoffmann , Dimitrios Tzionas , Micheal J. Black , Siyu Tang

We investigate whether a classifier can continuously authenticate users based on the way they interact with the touchscreen of a smart phone. We propose a set of 30 behavioral touch features that can be extracted from raw touchscreen logs…

Cryptography and Security · Computer Science 2013-01-08 Mario Frank , Ralf Biedert , Eugene Ma , Ivan Martinovic , Dawn Song

Wearable accelerometers enable large-scale health monitoring, yet learning robust human-activity representations has been constrained by scarce labeled data. While self-supervised learning offers a remedy, existing methods treat sensor…

Machine Learning · Computer Science 2026-05-28 Prithviraj Tarale , Kiet Chu , Abhishek Varghese , Kai-Chun Liu , Maxwell A. Xu , Mohit Iyyer , Sunghoon I. Lee

Although current image generation methods have reached impressive quality levels, they are still unable to produce plausible yet diverse images of handwritten words. On the contrary, when writing by hand, a great variability is observed…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Lei Kang , Pau Riba , Yaxing Wang , Marçal Rusiñol , Alicia Fornés , Mauricio Villegas

In this work we propose a solution to the UbiComp 2021 Challenge by Stabilo in which handwritten mathematical terms are supposed to be automatically classified based on time series sensor data captured on the DigiPen. The input data set…

Machine Learning · Computer Science 2021-09-14 Lukas Wegmeth , Alexander Hoelzemann , Kristof Van Laerhoven

Handwriting verification has stood as a steadfast identity authentication method for decades. However, this technique risks potential privacy breaches due to the inclusion of personal information in handwritten biometrics such as…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Peirong Zhang , Yuliang Liu , Songxuan Lai , Hongliang Li , Lianwen Jin

Young children are at an increased risk of contracting contagious diseases such as COVID-19 due to improper hand hygiene. An autonomous social agent that observes children while handwashing and encourages good hand washing practices could…

Our research aims at classifying individuals based on their unique interactions on touchscreen-based smartphones. In this research, we use Touch-Analytics datasets, which include 41 subjects and 30 different behavioral features.…

Machine Learning · Computer Science 2023-11-27 Melodee Montgomery , Prosenjit Chatterjee , John Jenkins , Kaushik Roy

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

Performances of Handwritten Text Recognition (HTR) models are largely determined by the availability of labeled and representative training samples. However, in many application scenarios labeled samples are scarce or costly to obtain. In…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Fabian Wolf , Gernot A. Fink

Recent works have shown that generative models leave traces of their underlying generative process on the generated samples, broadly referred to as fingerprints of a generative model, and have studied their utility in detecting synthetic…

Machine Learning · Computer Science 2024-03-01 Hae Jin Song , Mahyar Khayatkhoei , Wael AbdAlmageed

A handwritten word recognition system comes with issues such as lack of large and diverse datasets. It is necessary to resolve such issues since millions of official documents can be digitized by training deep learning models using a large…

Computer Vision and Pattern Recognition · Computer Science 2023-03-15 Mst Shapna Akter , Hossain Shahriar , Alfredo Cuzzocrea , Nova Ahmed , Carson Leung

In this study, a novel method to obtain user-dependent human activity recognition models unobtrusively by exploiting the sensors of a smartphone is presented. The recognition consists of two models: sensor fusion-based user-independent…

Machine Learning · Computer Science 2019-05-30 Pekka Siirtola , Heli Koskimäki , Juha Röning

Force myography has recently gained increasing attention for hand gesture recognition tasks. However, there is a lack of publicly available benchmark data, with most existing studies collecting their own data often with custom hardware and…

Machine Learning · Computer Science 2020-07-30 Thomas Buhl Andersen , Rógvi Eliasen , Mikkel Jarlund , Bin Yang

Learning from synthetic images plays an important role in facial expression recognition task due to the difficulties of labeling the real images, and it is challenging because of the gap between the synthetic images and real images. The…

Computer Vision and Pattern Recognition · Computer Science 2022-07-21 Xiangyu Miao , Jiahe Wang , Yanan Chang , Yi Wu , Shangfei Wang

Inspired by the Turing test, we present a novel methodological framework to assess the extent to which a population of machines mirrors the philosophical views of a population of humans. The framework consists of three steps: (i)…

Physics and Society · Physics 2025-10-06 Michele Pizzochero , Giorgia Dellaferrera

It would be useful for machines to use computers as humans do so that they can aid us in everyday tasks. This is a setting in which there is also the potential to leverage large-scale expert demonstrations and human judgements of…

In this paper, we aim to look into the feasibility of constructing alphabets using gestures. The main idea is to construct gestures, that are easy to remember, not cumbersome to reproduce and easily identifiable. We construct gestures for…

Applications · Statistics 2020-04-01 Arindam Roy Chowdhury , Abhinandan Dalal , Shubhajit Sen

Sign Language helps people with Speaking and Hearing Disabilities communicate with others efficiently. Sign Language identification is a challenging area in the field of computer vision and recent developments have been able to achieve near…

Computer Vision and Pattern Recognition · Computer Science 2021-01-21 Yugam Bajaj , Puru Malhotra