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Existing text recognition methods usually need large-scale training data. Most of them rely on synthetic training data due to the lack of annotated real images. However, there is a domain gap between the synthetic data and real data, which…

Computer Vision and Pattern Recognition · Computer Science 2023-03-03 Mingkun Yang , Minghui Liao , Pu Lu , Jing Wang , Shenggao Zhu , Hualin Luo , Qi Tian , Xiang Bai

Online handwriting recognition using inertial measurement units opens up handwriting on paper as input for digital devices. Doing it on edge hardware improves privacy and lowers latency, but entails memory constraints. To address this, we…

Computer Vision and Pattern Recognition · Computer Science 2026-02-12 Jindong Li , Dario Zanca , Vincent Christlein , Tim Hamann , Jens Barth , Peter Kämpf , Björn Eskofier

Self-supervised learning has been widely used to obtain transferrable representations from unlabeled images. Especially, recent contrastive learning methods have shown impressive performances on downstream image classification tasks. While…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Byungseok Roh , Wuhyun Shin , Ildoo Kim , Sungwoong Kim

Human Activity Recognition (HAR) based on the sensors of mobile/wearable devices aims to detect the physical activities performed by humans in their daily lives. Although supervised learning methods are the most effective in this task,…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Sannara Ek , Riccardo Presotto , Gabriele Civitarese , François Portet , Philippe Lalanda , Claudio Bettini

Air-writing is a challenging task that combines the fields of computer vision and natural language processing, offering an intuitive and natural approach for human-computer interaction. However, current air-writing solutions face two…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Meiqi Wu , Kaiqi Huang , Yuanqiang Cai , Shiyu Hu , Yuzhong Zhao , Weiqiang Wang

Advances in machine learning and deep neural networks for object detection, coupled with lower cost and power requirements of cameras, led to promising vision-based solutions for sUAS detection. However, solely relying on the visible…

Computer Vision and Pattern Recognition · Computer Science 2020-04-06 Vinicius G. Goecks , Grayson Woods , John Valasek

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

We introduce AirWare, an in-air hand-gesture recognition system that uses the already embedded speaker and microphone in most electronic devices, together with embedded infrared proximity sensors. Gestures identified by AirWare are…

Human-Computer Interaction · Computer Science 2021-01-26 Nibhrat Lohia , Raunak Mundada , Arya D. McCarthy , Eric C. Larson

Recognizing handwritten mathematical expressions (HMER) is a challenging task due to the inherent two-dimensional structure, varying symbol scales, and complex spatial relationships among symbols. In this paper, we present a self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-09-01 Shree Mitra , Ritabrata Chakraborty , Nilkanta Sahu

The self-supervised pretraining paradigm has achieved great success in skeleton-based action recognition. However, these methods treat the motion and static parts equally, and lack an adaptive design for different parts, which has a…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Lilang Lin , Jiahang Zhang , Jiaying Liu

Online handwriting recognition has been studied for a long time with only few practicable results when writing on normal paper. Previous approaches using sensor-based devices encountered problems that limited the usage of the developed…

Machine Learning · Computer Science 2021-07-09 Mohamad Wehbi , Tim Hamann , Jens Barth , Bjoern Eskofier

Self-supervised learning (SSL) approaches have brought tremendous success across many tasks and domains. It has been argued that these successes can be attributed to a link between SSL and identifiable representation learning: Temporal…

Machine Learning · Statistics 2025-06-03 Rodrigo González Laiz , Tobias Schmidt , Steffen Schneider

Handwritten Text Recognition (HTR) is a relevant problem in computer vision, and implies unique challenges owing to its inherent variability and the rich contextualization required for its interpretation. Despite the success of…

Artificial Intelligence · Computer Science 2025-06-19 Carlos Penarrubia , Carlos Garrido-Munoz , Jose J. Valero-Mas , Jorge Calvo-Zaragoza

Sign language recognition (SLR) refers to interpreting sign language glosses from given videos automatically. This research area presents a complex challenge in computer vision because of the rapid and intricate movements inherent in sign…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Muxin Pu , Mei Kuan Lim , Chun Yong Chong

Learning similarity metrics for glyphs and writing systems faces a fundamental challenge: while individual graphemes within invented alphabets can be reliably labeled, the historical relationships between different scripts remain uncertain…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Claire Roman , Philippe Meyer

Recently, there have been efforts to improve the performance in sign language recognition by designing self-supervised learning methods. However, these methods capture limited information from sign pose data in a frame-wise learning manner,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Weichao Zhao , Wengang Zhou , Hezhen Hu , Min Wang , Houqiang Li

Self-supervised contrastive learning is an effective approach for addressing the challenge of limited labelled data. This study builds upon the previously established two-stage patch-level, multi-label classification method for…

Computer Vision and Pattern Recognition · Computer Science 2026-02-09 Salma Haidar , José Oramas

Self-supervised learning has recently emerged as a strong alternative in document analysis. These approaches are now capable of learning high-quality image representations and overcoming the limitations of supervised methods, which require…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Marwa Dhiaf , Mohamed Ali Souibgui , Kai Wang , Yuyang Liu , Yousri Kessentini , Alicia Fornés , Ahmed Cheikh Rouhou

Artificial intelligence (AI) is anticipated to play a pivotal role in 6G. However, a key challenge in developing AI-powered solutions is the extensive data collection and labeling efforts required to train supervised deep learning models.…

Signal Processing · Electrical Eng. & Systems 2025-09-04 Ogechukwu Kanu , Ashkan Eshaghbeigi , Hatem Abou-Zeid

Sign language is the primary language for people with a hearing loss. Sign language recognition (SLR) is the automatic recognition of sign language, which represents a challenging problem for computers, though some progress has been made…

Computer Vision and Pattern Recognition · Computer Science 2021-03-10 Roman Töngi