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Multimodal-based action recognition methods have achieved high success using pose and RGB modality. However, skeletons sequences lack appearance depiction and RGB images suffer irrelevant noise due to modality limitations. To address this,…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Jinfu Liu , Runwei Ding , Yuhang Wen , Nan Dai , Fanyang Meng , Shen Zhao , Mengyuan Liu

In human activity recognition (HAR), activity labels have typically been encoded in one-hot format, which has a recent shift towards using textual representations to provide contextual knowledge. Here, we argue that HAR should be anchored…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Shuheng Li , Jiayun Zhang , Xiaohan Fu , Xiyuan Zhang , Jingbo Shang , Rajesh K. Gupta

The data-driven approach that learns an optimal representation of vision features like skeleton frames or RGB videos is currently a dominant paradigm for activity recognition. While great improvements have been achieved from existing single…

Computer Vision and Pattern Recognition · Computer Science 2020-04-30 Bruce X. B. Yu , Yan Liu , Keith C. C. Chan

Graph convolutional network based methods that model the body-joints' relations, have recently shown great promise in 3D skeleton-based human motion prediction. However, these methods have two critical issues: first, deep graph convolutions…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Maosen Li , Siheng Chen , Zijing Zhang , Lingxi Xie , Qi Tian , Ya Zhang

NeRF-based SLAM has recently achieved promising results in tracking and reconstruction. However, existing methods face challenges in providing sufficient scene representation, capturing structural information, and maintaining global…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Ziren Gong , Fabio Tosi , Youmin Zhang , Stefano Mattoccia , Matteo Poggi

Human action recognition (HAR) in videos is a fundamental research topic in computer vision. It consists mainly in understanding actions performed by humans based on a sequence of visual observations. In recent years, HAR have witnessed…

Computer Vision and Pattern Recognition · Computer Science 2020-10-30 Soufiane Lamghari , Guillaume-Alexandre Bilodeau , Nicolas Saunier

In this paper, we study the problem of one-shot skeleton-based action recognition, which poses unique challenges in learning transferable representation from base classes to novel classes, particularly for fine-grained actions. Existing…

Computer Vision and Pattern Recognition · Computer Science 2022-08-22 Tailin Chen , Desen Zhou , Jian Wang , Shidong Wang , Qian He , Chuanyang Hu , Errui Ding , Yu Guan , Xuming He

This paper proposes a novel Subdivision-Fusion Model (SFM) to recognize human actions. In most action recognition tasks, overlapping feature distribution is a common problem leading to overfitting. In the subdivision stage of the proposed…

Computer Vision and Pattern Recognition · Computer Science 2015-08-19 Hao Zongbo , Lu Linlin , Zhang Qianni , Wu Jie , Izquierdo Ebroul , Yang Juanyu , Zhao Jun

Human action understanding serves as a foundational pillar in the field of intelligent motion perception. Skeletons serve as a modality- and device-agnostic representation for human modeling, and skeleton-based action understanding has…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Hongsong Wang , Wanjiang Weng , Junbo Wang , Fang Zhao , Guo-Sen Xie , Xin Geng , Liang Wang

In this paper we propose the use of quantum genetic algorithm to optimize the support vector machine (SVM) for human action recognition. The Microsoft Kinect sensor can be used for skeleton tracking, which provides the joints' position…

Machine Learning · Statistics 2017-12-18 Yafeng Liu , Shimin Feng , Zhikai Zhao , Enjie Ding

Fitness movement recognition, a focused subdomain of human activity recognition (HAR), plays a vital role in health monitoring, rehabilitation, and personalized fitness training by enabling automated exercise classification from video data.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-08 Shanjid Hasan Nishat , Srabonti Deb , Mohiuddin Ahmed

In smart manufacturing environments, accurate and real-time recognition of worker actions is essential for productivity, safety, and human-machine collaboration. While skeleton-based human activity recognition (HAR) offers robustness to…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Vinit Hegiste , Vidit Goyal , Tatjana Legler , Martin Ruskowski

Human pose and shape are two important components of 2D human body. However, how to efficiently represent both of them in images is still an open question. In this paper, we propose the Triplet Representation for Body (TRB) -- a compact 2D…

Computer Vision and Pattern Recognition · Computer Science 2019-10-28 Haodong Duan , KwanYee Lin , Sheng Jin , Wentao Liu , Chen Qian , Wanli Ouyang

Ensuring the safety and well-being of elderly and vulnerable populations in assisted living environments is a critical concern. Computer vision presents an innovative and powerful approach to predicting health risks through video…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Yixuan Wang , Paul Stynes , Pramod Pathak , Cristina Muntean

Action recognition has been a heated topic in computer vision for its wide application in vision systems. Previous approaches achieve improvement by fusing the modalities of the skeleton sequence and RGB video. However, such methods have a…

Computer Vision and Pattern Recognition · Computer Science 2022-02-24 Xiaoguang Zhu , Ye Zhu , Haoyu Wang , Honglin Wen , Yan Yan , Peilin Liu

Skeleton-based human action recognition has been drawing more interest recently due to its low sensitivity to appearance changes and the accessibility of more skeleton data. However, even the 3D skeletons captured in practice are still…

Computer Vision and Pattern Recognition · Computer Science 2022-09-26 Cunling Bian , Wei Feng , Fanbo Meng , Song Wang

The ability to identify and temporally segment fine-grained actions in motion capture sequences is crucial for applications in human movement analysis. Motion capture is typically performed with optical or inertial measurement systems,…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Benjamin Filtjens , Bart Vanrumste , Peter Slaets

This paper proposes a simple yet effective method for human action recognition in video. The proposed method separately extracts local appearance and motion features using state-of-the-art three-dimensional convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2020-02-24 David Torpey , Turgay Celik

Great progress has been made in estimating 3D human pose and shape from images and video by training neural networks to directly regress the parameters of parametric human models like SMPL. However, existing body models have simplified…

Graphics · Computer Science 2025-09-09 Marilyn Keller , Keenon Werling , Soyong Shin , Scott Delp , Sergi Pujades , C. Karen Liu , Michael J. Black

Human Action Recognition (HAR) aims to understand human behavior and assign a label to each action. It has a wide range of applications, and therefore has been attracting increasing attention in the field of computer vision. Human actions…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Zehua Sun , Qiuhong Ke , Hossein Rahmani , Mohammed Bennamoun , Gang Wang , Jun Liu