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The world knowledge and reasoning capabilities of text-based large language models (LLMs) are advancing rapidly, yet current approaches to human motion understanding, including motion question answering and captioning, have not fully…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Yao Zhang , Zhuchenyang Liu , Thomas Ploetz , Yu Xiao

Skeleton-based action recognition has made significant advancements recently, with models like InfoGCN showcasing remarkable accuracy. However, these models exhibit a key limitation: they necessitate complete action observation prior to…

Computer Vision and Pattern Recognition · Computer Science 2024-10-28 Seunggeun Chi , Hyung-gun Chi , Qixing Huang , Karthik Ramani

To diagnose, plan, and treat musculoskeletal pathologies, understanding and reproducing muscle recruitment for complex movements is essential. With muscle activations for movements often being highly redundant, nonlinear, and time…

Signal Processing · Electrical Eng. & Systems 2020-07-15 Emanuel Joos , Fabien Péan , Orcun Goksel

Human skeleton point clouds are commonly used to automatically classify and predict the behaviour of others. In this paper, we use a contrastive self-supervised learning method, SimCLR, to learn representations that capture the semantics of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-11 Nico Lingg , Miguel Sarabia , Luca Zappella , Barry-John Theobald

Endoscopic video analysis is essential for early gastrointestinal screening but remains hindered by limited high-quality annotations. While self-supervised video pre-training shows promise, existing methods developed for natural videos…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Yuan Zhang , Sihao Dou , Kai Hu , Shuhua Deng , Chunhong Cao , Fen Xiao , Xieping Gao

Human gesture recognition has assumed a capital role in industrial applications, such as Human-Machine Interaction. We propose an approach for segmentation and classification of dynamic gestures based on a set of handcrafted features, which…

Computer Vision and Pattern Recognition · Computer Science 2020-08-27 André Brás , Miguel Simão , Pedro Neto

We study the problem of human action recognition using motion capture (MoCap) sequences. Unlike existing techniques that take multiple manual steps to derive standardized skeleton representations as model input, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Xiaoyu Zhu , Po-Yao Huang , Junwei Liang , Celso M. de Melo , Alexander Hauptmann

In this work, we study self-supervised representation learning for 3D skeleton-based action recognition. We extend Bootstrap Your Own Latent (BYOL) for representation learning on skeleton sequence data and propose a new data augmentation…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Olivier Moliner , Sangxia Huang , Kalle Åström

Anomaly identification is highly dependent on the relationship between the object and the scene, as different/same object actions in same/different scenes may lead to various degrees of normality and anomaly. Therefore, object-scene…

Computer Vision and Pattern Recognition · Computer Science 2022-09-28 Hui Lv , Zhen Cui , Biao Wang , Jian Yang

In this paper, we proposed a effective but extensible residual one-dimensional convolution neural network as base network, based on the this network, we proposed four subnets to explore the features of skeleton sequences from each aspect.…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Yangyang Xu , Lei Wang

We present a unified perspective on tackling various human-centric video tasks by learning human motion representations from large-scale and heterogeneous data resources. Specifically, we propose a pretraining stage in which a motion…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Wentao Zhu , Xiaoxuan Ma , Zhaoyang Liu , Libin Liu , Wayne Wu , Yizhou Wang

The dynamics of human skeletons have significant information for the task of action recognition. The similarity between trajectories of corresponding joints is an indicating feature of the same action, while this similarity may subject to…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Qi Li , Hanlin Mo , Jinghan Zhao , Hongxiang Hao , Hua Li

Self-supervised skeleton-based action recognition enjoys a rapid growth along with the development of contrastive learning. The existing methods rely on imposing invariance to augmentations of 3D skeleton within a single data stream, which…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Ding Li , Yongqiang Tang , Zhizhong Zhang , Wensheng Zhang

Robot awareness of human actions is an essential research problem in robotics with many important real-world applications, including human-robot collaboration and teaming. Over the past few years, depth sensors have become a standard device…

Computer Vision and Pattern Recognition · Computer Science 2017-02-27 Fei Han , Xue Yang , Christopher Reardon , Yu Zhang , Hao Zhang

Gesture recognition is getting more and more popular due to various application possibilities in human-machine interaction. Existing multi-modal gesture recognition systems take multi-modal data as input to improve accuracy, but such…

Computer Vision and Pattern Recognition · Computer Science 2021-11-01 Dinghao Fan , Hengjie Lu , Shugong Xu , Shan Cao

Human motion analysis tasks, such as temporal 3D pose estimation, motion prediction, and motion in-betweening, play an essential role in computer vision. However, current paradigms suffer from severe fragmentation. First, the field is split…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Xinshun Wang , Peiming Li , Ziyi Wang , Zhongbin Fang , Zhichao Deng , Songtao Wu , Jason Li , Mengyuan Liu

Skeleton-based action recognition using GCNs has achieved remarkable performance, but recognizing ambiguous actions, such as "waving" and "saluting", remains a significant challenge. Existing methods typically rely on a serial combination…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Hao Huang , Yujie Lin , Siyu Chen , Haiyang Liu

Person re-identification (re-ID) via 3D skeletons is an important emerging topic with many merits. Existing solutions rarely explore valuable body-component relations in skeletal structure or motion, and they typically lack the ability to…

Computer Vision and Pattern Recognition · Computer Science 2022-08-26 Haocong Rao , Chunyan Miao

Symbolic regression (SR) methods attempt to learn mathematical expressions that approximate the behavior of an observed system. However, when dealing with multivariate systems, they often fail to identify the functional form that explains…

Machine Learning · Computer Science 2024-06-27 Giorgio Morales , John W. Sheppard

Contrastive learning has achieved great success in skeleton-based action recognition. However, most existing approaches encode the skeleton sequences as entangled spatiotemporal representations and confine the contrasts to the same level of…

Computer Vision and Pattern Recognition · Computer Science 2023-09-13 Cong Wu , Xiao-Jun Wu , Josef Kittler , Tianyang Xu , Sara Atito , Muhammad Awais , Zhenhua Feng
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