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Being able to detect and recognize human activities is essential for several applications, including personal assistive robotics. In this paper, we perform detection and recognition of unstructured human activity in unstructured…

Robotics · Computer Science 2014-06-25 Jaeyong Sung , Colin Ponce , Bart Selman , Ashutosh Saxena

The recognition of actions from video sequences has many applications in health monitoring, assisted living, surveillance, and smart homes. Despite advances in sensing, in particular related to 3D video, the methodologies to process the…

Computer Vision and Pattern Recognition · Computer Science 2018-10-03 Rui Zhao , Haider Ali , Patrick van der Smagt

In this article, we present a survey of recent advances in passive human behaviour recognition in indoor areas using the channel state information (CSI) of commercial WiFi systems. Movement of human body causes a change in the wireless…

Artificial Intelligence · Computer Science 2017-08-25 Siamak Yousefi , Hirokazu Narui , Sankalp Dayal , Stefano Ermon , Shahrokh Valaee

Fine-grained action localization in untrimmed sports videos presents a significant challenge due to rapid and subtle motion transitions over short durations. Existing supervised and weakly supervised solutions often rely on extensive…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Bikash Kumar Badatya , Vipul Baghel , Ravi Hegde

Daily activity recognition has gained prominence due to its applications in context-aware computing. Current methods primarily rely on supervised learning for detecting simple, repetitive activities. This paper introduces LayeredSense, a…

Human-Computer Interaction · Computer Science 2025-02-14 Chak Man Lam

With the prevalence of accessible depth sensors, dynamic human body skeletons have attracted much attention as a robust modality for action recognition. Previous methods model skeletons based on RNN or CNN, which has limited expressive…

Computer Vision and Pattern Recognition · Computer Science 2019-04-16 Xiang Gao , Wei Hu , Jiaxiang Tang , Jiaying Liu , Zongming Guo

Wireless foundation models (WFMs) have recently demonstrated promising capabilities, jointly performing multiple wireless functions and adapting effectively to new environments. However, while current WFMs process only one modality,…

Signal Processing · Electrical Eng. & Systems 2026-02-20 Ahmed Aboulfotouh , Hatem Abou-Zeid

We present a module that extends the temporal graph of a graph convolutional network (GCN) for action recognition with a sequence of skeletons. Existing methods attempt to represent a more appropriate spatial graph on an intra-frame, but…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Yuya Obinata , Takuma Yamamoto

Online action recognition is an important task for human centered intelligent services, which is still difficult to achieve due to the varieties and uncertainties of spatial and temporal scales of human actions. In this paper, we propose…

Computer Vision and Pattern Recognition · Computer Science 2020-11-04 Guoliang Liu , Qinghui Zhang , Yichao Cao , Junwei Li , Hao Wu , Guohui Tian

The problem of human activity recognition from mobile sensor data applies to multiple domains, such as health monitoring, personal fitness, daily life logging, and senior care. A critical challenge for training human activity recognition…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Abduallah Mohamed , Fernando Lejarza , Stephanie Cahail , Christian Claudel , Edison Thomaz

Skeleton-based action recognition has become popular in recent years due to its efficiency and robustness. Most current methods adopt graph convolutional network (GCN) for topology modeling, but GCN-based methods are limited in…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Jinzhao Luo , Lu Zhou , Guibo Zhu , Guojing Ge , Beiying Yang , Jinqiao Wang

This paper proposes a human activity recognition method which is based on features learned from 3D video data without incorporating domain knowledge. The experiments on data collected by RGBD cameras produce results outperforming other…

Computer Vision and Pattern Recognition · Computer Science 2015-08-11 Ngu Nguyen

Understanding accurate information on human behaviours is one of the most important tasks in machine intelligence. Human Activity Recognition that aims to understand human activities from a video is a challenging task due to various…

Computer Vision and Pattern Recognition · Computer Science 2021-06-25 Ivaxi Sheth

Combining different sensing modalities with multiple positions helps form a unified perception and understanding of complex situations such as human behavior. Hence, human activity recognition (HAR) benefits from combining redundant and…

Machine Learning · Computer Science 2024-04-26 Hymalai Bello

Recently, attempts have been made to collect millions of videos to train CNN models for action recognition in videos. However, curating such large-scale video datasets requires immense human labor, and training CNNs on millions of videos…

Computer Vision and Pattern Recognition · Computer Science 2015-12-23 Shugao Ma , Sarah Adel Bargal , Jianming Zhang , Leonid Sigal , Stan Sclaroff

A brain-machine interface (BMI) based on electroencephalography (EEG) can overcome the movement deficits for patients and real-world applications for healthy people. Ideally, the BMI system detects user movement intentions transforms them…

Human-Computer Interaction · Computer Science 2020-02-05 D. -Y. Lee , J. -H. Jeong , K. -H. Shim , D. -J. Kim

This paper presents the ARN-LSTM architecture, a novel multi-stream action recognition model designed to address the challenge of simultaneously capturing spatial motion and temporal dynamics in action sequences. Traditional methods often…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Chuanchuan Wang , Ahmad Sufril Azlan Mohmamed , Mohd Halim Bin Mohd Noor , Xiao Yang , Feifan Yi , Xiang Li

We propose joint transmission-recognition schemes for efficient inference at the wireless edge. Motivated by the surveillance applications with wireless cameras, we consider the person classification task over a wireless channel carried out…

Machine Learning · Computer Science 2020-11-04 Ezgi Ozyilkan , Mikolaj Jankowski

There exist a wide range of intra class variations of the same actions and inter class similarity among the actions, at the same time, which makes the action recognition in videos very challenging. In this paper, we present a novel…

Computer Vision and Pattern Recognition · Computer Science 2019-12-03 Chhavi Dhiman , Dinesh Kumar Vishwakarma , Paras Aggarwal

In skeleton-based human activity understanding, existing methods often adopt the contrastive learning paradigm to construct a discriminative feature space. However, many of these approaches fail to exploit the structural inter-class…

Computer Vision and Pattern Recognition · Computer Science 2026-02-25 Hongda Liu , Yunfan Liu , Min Ren , Lin Sui , Yunlong Wang , Zhenan Sun