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Existing action recognition methods mainly focus on joint and bone information in human body skeleton data due to its robustness to complex backgrounds and dynamic characteristics of the environments. In this paper, we combine body skeleton…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Umar Asif , Deval Mehta , Stefan von Cavallar , Jianbin Tang , Stefan Harrer

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

Self-supervised learning (SSL), which aims to learn meaningful prior representations from unlabeled data, has been proven effective for skeleton-based action understanding. Different from the image domain, skeleton data possesses sparser…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Jiahang Zhang , Lilang Lin , Shuai Yang , Jiaying Liu

Action in video usually involves the interaction of human with objects. Action labels are typically composed of various combinations of verbs and nouns, but we may not have training data for all possible combinations. In this paper, we aim…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Zhekun Luo , Shalini Ghosh , Devin Guillory , Keizo Kato , Trevor Darrell , Huijuan Xu

Deploying medical image segmentation models in routine clinical workflows is often constrained by on-premises infrastructure, where computational resources are fixed and cloud-based inference may be restricted by governance and security…

Computer Vision and Pattern Recognition · Computer Science 2026-01-15 Qizhen Lan , Aaron Choi , Jun Ma , Bo Wang , Zhaogming Zhao , Xiaoqian Jiang , Yu-Chun Hsu

Previous knowledge distillation (KD) methods mostly focus on compressing network architectures, which is not thorough enough in deployment as some costs like transmission bandwidth and imaging equipment are related to the image size.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Guangyu Guo , Dingwen Zhang , Longfei Han , Nian Liu , Ming-Ming Cheng , Junwei Han

In skeleton-based action recognition, a key challenge is distinguishing between actions with similar trajectories of joints due to the lack of image-level details in skeletal representations. Recognizing that the differentiation of similar…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Hongda Liu , Yunfan Liu , Min Ren , Hao Wang , Yunlong Wang , Zhenan Sun

Knowledge Distillation (KD) for object detection aims to train a compact detector by transferring knowledge from a teacher model. Since the teacher model perceives data in a way different from humans, existing KD methods only distill…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Jiawei Liang , Siyuan Liang , Aishan Liu , Ke Ma , Jingzhi Li , Xiaochun Cao

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

Human action recognition is crucial in computer vision systems. However, in real-world scenarios, human actions often fall outside the distribution of training data, requiring a model to both recognize in-distribution (ID) actions and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-20 Jing Xu , Anqi Zhu , Jingyu Lin , Qiuhong Ke , Cunjian Chen

As collaborative robots (cobots) continue to gain popularity in industrial manufacturing, effective human-robot collaboration becomes crucial. Cobots should be able to recognize human actions to assist with assembly tasks and act…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Dustin Aganian , Mona Köhler , Benedict Stephan , Markus Eisenbach , Horst-Michael Gross

Understanding human behavior is an important problem in the pursuit of visual intelligence. A challenge in this endeavor is the extensive and costly effort required to accurately label action segments. To address this issue, we consider…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Seth Z. Zhao , Reza Ghoddoosian , Isht Dwivedi , Nakul Agarwal , Behzad Dariush

We address the challenging problem of learning motion representations using deep models for video recognition. To this end, we make use of attention modules that learn to highlight regions in the video and aggregate features for…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Miao Liu , Xin Chen , Yun Zhang , Yin Li , James M. Rehg

Large Language Models (LLMs) hold rich implicit knowledge and powerful transferability. In this paper, we explore the combination of LLMs with the human skeleton to perform action classification and description. However, when treating LLM…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Qilang Ye , Yu Zhou , Lian He , Jie Zhang , Xuanming Guo , Jiayu Zhang , Mingkui Tan , Weicheng Xie , Yue Sun , Tao Tan , Xiaochen Yuan , Ghada Khoriba , Zitong Yu

Skeleton-based human action recognition is a longstanding challenge due to its complex dynamics. Some fine-grain details of the dynamics play a vital role in classification. The existing work largely focuses on designing incremental neural…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Ruijie Hou , Yanran Li , Ningyu Zhang , Yulin Zhou , Xiaosong Yang , Zhao Wang

Knowledge distillation learns a lightweight student model that mimics a cumbersome teacher. Existing methods regard the knowledge as the feature of each instance or their relations, which is the instance-level knowledge only from the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Sanli Tang , Zhongyu Zhang , Zhanzhan Cheng , Jing Lu , Yunlu Xu , Yi Niu , Fan He

With the inherent advantages of skeleton representation, 3D skeleton-based action recognition has become a prominent topic in the field of computer vision. However, previous reviews have predominantly adopted a model-oriented perspective,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Mengyuan Liu , Hong Liu , Qianshuo Hu , Bin Ren , Junsong Yuan , Jiaying Lin , Jiajun Wen

We propose a novel skeleton-based representation for 3D action recognition in videos using Deep Convolutional Neural Networks (D-CNNs). Two key issues have been addressed: First, how to construct a robust representation that easily captures…

Computer Vision and Pattern Recognition · Computer Science 2018-07-19 Huy Hieu Pham , Louahdi Khoudour , Alain Crouzil , Pablo Zegers , Sergio A. Velastin

Due to the compact and rich high-level representations offered, skeleton-based human action recognition has recently become a highly active research topic. Previous studies have demonstrated that investigating joint relationships in spatial…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Ali Farajzadeh Bavil , Hamed Damirchi , Hamid D. Taghirad

In the realm of skeleton-based action recognition, the traditional methods which rely on coarse body keypoints fall short of capturing subtle human actions. In this work, we propose Expressive Keypoints that incorporates hand and foot…

Computer Vision and Pattern Recognition · Computer Science 2024-06-27 Yijie Yang , Jinlu Zhang , Jiaxu Zhang , Zhigang Tu