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Human activity recognition (HAR) has been playing an increasingly important role in various domains such as healthcare, security monitoring, and metaverse gaming. Though numerous HAR methods based on computer vision have been developed to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Jianfei Yang , Shijie Tang , Yuecong Xu , Yunjiao Zhou , Lihua Xie

As a critical component of Wearable AI, IMU-based Human Activity Recognition (HAR) has attracted increasing attention from both academia and industry in recent years. Although HAR performance has improved considerably in specific scenarios,…

Signal Processing · Electrical Eng. & Systems 2025-08-19 Yize Cai , Baoshen Guo , Flora Salim , Zhiqing Hong

In the field of sensor-based Human Activity Recognition (HAR), deep neural networks provide advanced technical support. Many studies have proven that recognition accuracy can be improved by increasing the depth or width of the network.…

Machine Learning · Computer Science 2025-08-22 Xiaoyang Li , Yixuan Jiang , Junze Zhu , Haotian Tang , Dongchen Wu , Hanyu Liu , Chao Li

Human Activity Recognition (HAR) using on-body devices identifies specific human actions in unconstrained environments. HAR is challenging due to the inter and intra-variance of human movements; moreover, annotated datasets from on-body…

Computer Vision and Pattern Recognition · Computer Science 2022-12-05 Shrutarv Awasthi , Fernando Moya Rueda , Gernot A. Fink

In this article we present SHARP, an original approach for obtaining human activity recognition (HAR) through the use of commercial IEEE 802.11 (Wi-Fi) devices. SHARP grants the possibility to discern the activities of different persons,…

Signal Processing · Electrical Eng. & Systems 2022-11-08 Francesca Meneghello , Domenico Garlisi , Nicolò Dal Fabbro , Ilenia Tinnirello , Michele Rossi

As of today, state-of-the-art activity recognition from wearable sensors relies on algorithms being trained to classify fixed windows of data. In contrast, video-based Human Activity Recognition, known as Temporal Action Localization (TAL),…

Machine Learning · Computer Science 2024-10-15 Marius Bock , Michael Moeller , Kristof Van Laerhoven

The daily activities performed by a disabled or elderly person can be monitored by a smart environment, and the acquired data can be used to learn a predictive model of user behavior. To speed up the learning, several researchers designed…

Machine Learning · Computer Science 2021-01-19 Sharare Zehtabian , Siavash Khodadadeh , Ladislau Bölöni , Damla Turgut

The gap between sensing patterns of different face modalities remains a challenging problem in heterogeneous face recognition (HFR). This paper proposes an adversarial discriminative feature learning framework to close the sensing gap via…

Computer Vision and Pattern Recognition · Computer Science 2017-09-13 Lingxiao Song , Man Zhang , Xiang Wu , Ran He

Deep neural networks have empowered accurate device-free human activity recognition, which has wide applications. Deep models can extract robust features from various sensors and generalize well even in challenging situations such as…

Cryptography and Security · Computer Science 2022-12-05 Jianfei Yang , Han Zou , Lihua Xie

The combination of increased life expectancy and falling birth rates is resulting in an aging population. Wearable Sensor-based Human Activity Recognition (WSHAR) emerges as a promising assistive technology to support the daily lives of…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Jianyuan Ni , Hao Tang , Syed Tousiful Haque , Yan Yan , Anne H. H. Ngu

We study in this paper the problem of novel human-object interaction (HOI) detection, aiming at improving the generalization ability of the model to unseen scenarios. The challenge mainly stems from the large compositional space of objects…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Yuhang Song , Wenbo Li , Lei Zhang , Jianwei Yang , Emre Kiciman , Hamid Palangi , Jianfeng Gao , C. -C. Jay Kuo , Pengchuan Zhang

Despite the widespread integration of ambient light sensors (ALS) in smart devices commonly used for screen brightness adaptation, their application in human activity recognition (HAR), primarily through body-worn ALS, is largely…

Artificial Intelligence · Computer Science 2024-08-23 Lala Shakti Swarup Ray , Daniel Geißler , Mengxi Liu , Bo Zhou , Sungho Suh , Paul Lukowicz

Low-resolution infrared-based human activity recognition (HAR) attracted enormous interests due to its low-cost and private. In this paper, a novel semi-supervised crossdomain neural network (SCDNN) based on 8 $\times$ 8 low-resolution…

Signal Processing · Electrical Eng. & Systems 2024-03-06 Cunyi Yin , Xiren Miao , Jing Chen , Hao Jiang , Deying Chen , Yixuan Tong , Shaocong Zheng

With the rapidly growing interest in autonomous navigation, the body of research on motion planning and collision avoidance techniques has enjoyed an accelerating rate of novel proposals and developments. However, the complexity of new…

Robotics · Computer Science 2018-06-06 Vahid Behzadan , Arslan Munir

As the percentage of elderly people in developed countries increases worldwide, the healthcare of this collective is a worrying matter, especially if it includes the preservation of their autonomy. In this direction, many studies are being…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 F. Xavier Gaya-Morey , Cristina Manresa-Yee , Jose M. Buades-Rubio

In recent years, there has been growing interest in developing robots and autonomous systems that can interact with human in a more natural and intuitive way. One of the key challenges in achieving this goal is to enable these systems to…

Robotics · Computer Science 2025-10-29 Ziqi Ma , Changda Tian , Yue Gao

The Human Activity Recognition (HAR) tasks automatically identify human activities using the sensor data, which has numerous applications in healthcare, sports, security, and human-computer interaction. Despite significant advances in HAR,…

Computer Science and Game Theory · Computer Science 2023-11-14 Mohammad Hossein Shayesteh , Behrooz Sharokhzadeh , Behrooz Masoumi

Due to the numerous potential applications in visual surveillance and nighttime driving, recognizing human action in low-light conditions remains a difficult problem in computer vision. Existing methods separate action recognition and dark…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Anwaar Ulhaq

Unsupervised user adaptation aligns the feature distributions of the data from training users and the new user, so a well-trained wearable human activity recognition (WHAR) model can be well adapted to the new user. With the development of…

Signal Processing · Electrical Eng. & Systems 2022-04-28 Ling Chen , Yi Zhang , Shenghuan Miao , Sirou Zhu , Rong Hu , Liangying Peng , Mingqi Lv

This work presents a computer model to discriminate sensor activation in multi-occupancy environments based on proximity interaction. Current proximity-based and indoor location methods allow the estimation of the positions or areas where…

Signal Processing · Electrical Eng. & Systems 2022-11-21 Aurora Polo-Rodriguez , Javier Medina-Quero
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