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Recognizing an activity with a single reference sample using metric learning approaches is a promising research field. The majority of few-shot methods focus on object recognition or face-identification. We propose a metric learning…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Raphael Memmesheimer , Nick Theisen , Dietrich Paulus

Zero-shot skeleton-based action recognition aims to classify unseen skeleton-based human actions without prior exposure to such categories during training. This task is extremely challenging due to the difficulty in generalizing from known…

Computer Vision and Pattern Recognition · Computer Science 2025-07-25 Kai Zhou , Shuhai Zhang , Zeng You , Jinwu Hu , Mingkui Tan , Fei Liu

The use of skeletal data allows deep learning models to perform action recognition efficiently and effectively. Herein, we believe that exploring this problem within the context of Continual Learning is crucial. While numerous studies focus…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Matteo Mosconi , Andriy Sorokin , Aniello Panariello , Angelo Porrello , Jacopo Bonato , Marco Cotogni , Luigi Sabetta , Simone Calderara , Rita Cucchiara

This paper investigates body bones from skeleton data for skeleton based action recognition. Body joints, as the direct result of mature pose estimation technologies, are always the key concerns of traditional action recognition methods.…

Computer Vision and Pattern Recognition · Computer Science 2018-06-01 Xikun Zhang , Chang Xu , Xinmei Tian , Dacheng Tao

Dynamics of human body skeletons convey significant information for human action recognition. Conventional approaches for modeling skeletons usually rely on hand-crafted parts or traversal rules, thus resulting in limited expressive power…

Computer Vision and Pattern Recognition · Computer Science 2018-01-26 Sijie Yan , Yuanjun Xiong , Dahua Lin

Contrastive learning has gained significant attention in skeleton-based action recognition for its ability to learn robust representations from unlabeled data. However, existing methods rely on a single skeleton convention, which limits…

Computer Vision and Pattern Recognition · Computer Science 2025-08-21 Mert Kiray , Alvaro Ritter , Nassir Navab , Benjamin Busam

In recent years, action recognition has received much attention and wide application due to its important role in video understanding. Most of the researches on action recognition methods focused on improving the performance via various…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Pengcheng Dong , Wenbo Wan , Huaxiang Zhang , Shuai Li , Sujuan Hou , Jiande Sun

Occlusions are universal disruptions constantly present in the real world. Especially for sparse representations, such as human skeletons, a few occluded points might destroy the geometrical and temporal continuity critically affecting the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-11 Kunyu Peng , Alina Roitberg , Kailun Yang , Jiaming Zhang , Rainer Stiefelhagen

Few-shot action recognition, i.e. recognizing new action classes given only a few examples, benefits from incorporating temporal information. Prior work either encodes such information in the representation itself and learns classifiers at…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Juliette Bertrand , Yannis Kalantidis , Giorgos Tolias

Skeleton-based action recognition methods are limited by the semantic extraction of spatio-temporal skeletal maps. However, current methods have difficulty in effectively combining features from both temporal and spatial graph dimensions…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Shengqin Wang , Yongji Zhang , Minghao Zhao , Hong Qi , Kai Wang , Fenglin Wei , Yu Jiang

We present SkeleTR, a new framework for skeleton-based action recognition. In contrast to prior work, which focuses mainly on controlled environments, we target more general scenarios that typically involve a variable number of people and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-21 Haodong Duan , Mingze Xu , Bing Shuai , Davide Modolo , Zhuowen Tu , Joseph Tighe , Alessandro Bergamo

Recently, multimodal tasks have strongly advanced the field of action recognition with their rich multimodal information. However, due to the scarcity of tri-modal data, research on tri-modal action recognition tasks faces many challenges.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Songping Wang , Xiantao Hu , Yueming Lyu , Caifeng Shan

We present a new deep learning approach for real-time 3D human action recognition from skeletal data and apply it to develop a vision-based intelligent surveillance system. Given a skeleton sequence, we propose to encode skeleton poses and…

Computer Vision and Pattern Recognition · Computer Science 2022-08-11 Huy Hieu Pham , Houssam Salmane , Louahdi Khoudour , Alain Crouzil , Pablo Zegers , Sergio A Velastin

Benefiting from its succinctness and robustness, skeleton-based action recognition has recently attracted much attention. Most existing methods utilize local networks (e.g., recurrent, convolutional, and graph convolutional networks) to…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Guyue Hu , Bo Cui , Shan Yu

In this paper, we propose to improve the traditional use of RNNs by employing a many to many model for video classification. We analyze the importance of modeling spatial layout and temporal encoding for daily living action recognition.…

Computer Vision and Pattern Recognition · Computer Science 2018-06-18 Srijan Das , Michal Koperski , Francois Bremond , Gianpiero Francesca

Existing methods for skeleton-based action recognition mainly focus on improving the recognition accuracy, whereas the efficiency of the model is rarely considered. Recently, there are some works trying to speed up the skeleton modeling by…

Computer Vision and Pattern Recognition · Computer Science 2021-03-23 Lei Shi , Yifan Zhang , Jian Cheng , Hanqing Lu

In skeleton-based action recognition, Graph Convolutional Networks model human skeletal joints as vertices and connect them through an adjacency matrix, which can be seen as a local attention mask. However, in most existing Graph…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Hao Xing , Darius Burschka

Although skeleton-based action recognition has achieved great success in recent years, most of the existing methods may suffer from a large model size and slow execution speed. To alleviate this issue, we analyze skeleton sequence…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Fan Yang , Sakriani Sakti , Yang Wu , Satoshi Nakamura

The gesture recognition using motion capture data and depth sensors has recently drawn more attention in vision recognition. Currently most systems only classify dataset with a couple of dozens different actions. Moreover, feature…

Computer Vision and Pattern Recognition · Computer Science 2014-09-02 Kyunghyun Cho , Xi Chen

Skeletal Action recognition from an egocentric view is important for applications such as interfaces in AR/VR glasses and human-robot interaction, where the device has limited resources. Most of the existing skeletal action recognition…

Computer Vision and Pattern Recognition · Computer Science 2023-09-20 Junan Lin , Zhichao Sun , Enjie Cao , Taein Kwon , Mahdi Rad , Marc Pollefeys