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Human activity recognition (HAR) by wearable sensor devices embedded in the Internet of things (IOT) can play a significant role in remote health monitoring and emergency notification, to provide healthcare of higher standards. The purpose…

Machine Learning · Computer Science 2022-01-24 M. Abid , A. Khabou , Y. Ouakrim , H. Watel , S. Chemkhi , A. Mitiche , A. Benazza-Benyahia , N. Mezghani

Human Activity Recognition (HAR) has become increasingly popular with ubiquitous computing, driven by the popularity of wearable sensors in fields like healthcare and sports. While Convolutional Neural Networks (ConvNets) have significantly…

Signal Processing · Electrical Eng. & Systems 2024-05-31 Shuai Shao , Yu Guan , Victor Sanchez

In recent years, deep learning has emerged as a potent tool across a multitude of domains, leading to a surge in research pertaining to its application in the wearable human activity recognition (WHAR) domain. Despite the rapid development,…

Machine Learning · Computer Science 2024-01-12 Yiran Huang , Haibin Zhao , Yexu Zhou , Till Riedel , Michael Beigl

Ensuring differential privacy of models learned from sensitive user data is an important goal that has been studied extensively in recent years. It is now known that for some basic learning problems, especially those involving…

Machine Learning · Computer Science 2018-05-10 Cynthia Dwork , Vitaly Feldman

Human Activity Recognition (HAR) from devices like smartphone accelerometers is a fundamental problem in ubiquitous computing. Machine learning based recognition models often perform poorly when applied to new users that were not part of…

Machine Learning · Computer Science 2020-12-22 Alan Mazankiewicz , Klemens Böhm , Mario Bergés

Skeleton-based human action recognition (HAR) has achieved remarkable progress with graph-based architectures. However, most existing methods remain body-centric, focusing on large-scale motions while neglecting subtle hand articulations…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Seungyeon Cho , Tae-kyun Kim

The Privacy-sensitive Object Identification (POI) task allocates bounding boxes for privacy-sensitive objects in a scene. The key to POI is settling an object's privacy class (privacy-sensitive or non-privacy-sensitive). In contrast to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-16 Zhuohang Jiang , Bingkui Tong , Xia Du , Ahmed Alhammadi , Jizhe Zhou

In distributed learning settings, models are iteratively updated with shared gradients computed from potentially sensitive user data. While previous work has studied various privacy risks of sharing gradients, our paper aims to provide a…

Machine Learning · Computer Science 2024-09-02 Zhuohang Li , Andrew Lowy , Jing Liu , Toshiaki Koike-Akino , Kieran Parsons , Bradley Malin , Ye Wang

Automatic analysis of the video is one of most complex problems in the fields of computer vision and machine learning. A significant part of this research deals with (human) activity recognition (HAR) since humans, and the activities that…

Computer Vision and Pattern Recognition · Computer Science 2018-05-04 Konstantin Sozykin , Stanislav Protasov , Adil Khan , Rasheed Hussain , Jooyoung Lee

Differential privacy (DP) is the prevailing technique for protecting user data in machine learning models. However, deficits to this framework include a lack of clarity for selecting the privacy budget $\epsilon$ and a lack of…

Machine Learning · Computer Science 2023-06-29 Tyler LeBlond , Joseph Munoz , Fred Lu , Maya Fuchs , Elliott Zaresky-Williams , Edward Raff , Brian Testa

Machine learning models require datasets for effective training, but directly sharing raw data poses significant privacy risk such as membership inference attacks (MIA). To mitigate the risk, privacy-preserving techniques such as data…

Machine Learning · Computer Science 2025-09-03 Yi Yin , Guangquan Zhang , Hua Zuo , Jie Lu

Sequential data is everywhere, and it can serve as a basis for research that will lead to improved processes. For example, road infrastructure can be improved by identifying bottlenecks in GPS data, or early diagnosis can be improved by…

Cryptography and Security · Computer Science 2020-02-25 Sigal Shaked , Lior Rokach

Training state-of-the-art (SOTA) deep learning models requires a large amount of data. The visual information present in the training data can be misused, which creates a huge privacy concern. One of the prominent solutions for this issue…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Umesh Kashyap , Sudev Kumar Padhi , Sk. Subidh Ali

Machine learning (ML) has become prominent in applications that directly affect people's quality of life, including in healthcare, justice, and finance. ML models have been found to exhibit discrimination based on sensitive attributes such…

Machine Learning · Computer Science 2022-05-25 Sikha Pentyala , David Melanson , Martine De Cock , Golnoosh Farnadi

Human-centric perceptions include a variety of vision tasks, which have widespread industrial applications, including surveillance, autonomous driving, and the metaverse. It is desirable to have a general pretrain model for versatile…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Shixiang Tang , Cheng Chen , Qingsong Xie , Meilin Chen , Yizhou Wang , Yuanzheng Ci , Lei Bai , Feng Zhu , Haiyang Yang , Li Yi , Rui Zhao , Wanli Ouyang

Location-based augmented reality (LB-AR) applications, such as Pok\'emon Go, stream sub-second GPS updates to deliver responsive and immersive user experiences. However, this high-frequency location reporting introduces serious privacy…

Cryptography and Security · Computer Science 2025-08-05 Shafizur Rahman Seeam , Ye Zheng , Zhengxiong Li , Yidan Hu

Human Activity Recognition (HAR) on resource-constrained wearable devices demands inference models that harmonize accuracy with computational efficiency. This paper introduces TinierHAR, an ultra-lightweight deep learning architecture that…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Sizhen Bian , Mengxi Liu , Vitor Fortes Rey , Daniel Geissler , Paul Lukowicz

Facial recognition is fundamental for a wide variety of security systems operating in real-time applications. In video surveillance based face recognition, face images are typically captured over multiple frames in uncontrolled conditions;…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Eker Onur , Bal Murat

Human pose estimation (HPE) has become essential in numerous applications including healthcare, activity recognition, and human-computer interaction. However, the privacy implications of processing sensitive visual data present significant…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Kaushik Bhargav Sivangi , Paul Henderson , Fani Deligianni

Automated signature verification is a critical biometric technique used in banking, identity authentication, and legal documentation. Despite the notable progress achieved by deep learning methods, most approaches in offline signature…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Matheus Ramos Parracho