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Human action recognition has been one of the most active fields of research in computer vision for last years. Two dimensional action recognition methods are facing serious challenges such as occlusion and missing the third dimension of…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Mozhgan Mokari , Hoda Mohammadzade , Benyamin Ghojogh

Sensing technology has significantly advanced in automating systems that reflect human movement, particularly in robotics and healthcare, where it is used to automatically detect target movements. This study develops a method to…

Machine Learning · Computer Science 2024-10-10 Yooseok Lim , Sujee Lee

Most recent view-invariant action recognition and performance assessment approaches rely on a large amount of annotated 3D skeleton data to extract view-invariant features. However, acquiring 3D skeleton data can be cumbersome, if not…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Faegheh Sardari , Björn Ommer , Majid Mirmehdi

We introduce One-Shot Dual-Arm Imitation Learning (ODIL), which enables dual-arm robots to learn precise and coordinated everyday tasks from just a single demonstration of the task. ODIL uses a new three-stage visual servoing (3-VS) method…

Robotics · Computer Science 2025-03-11 Yilong Wang , Edward Johns

Human pose analysis has garnered significant attention within both the research community and practical applications, owing to its expanding array of uses, including gaming, video surveillance, sports performance analysis, and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-23 Lijuan Zhou , Xiang Meng , Zhihuan Liu , Mengqi Wu , Zhimin Gao , Pichao Wang

We propose a novel system for unsupervised skeleton-based action recognition. Given inputs of body keypoints sequences obtained during various movements, our system associates the sequences with actions. Our system is based on an…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Kun Su , Xiulong Liu , Eli Shlizerman

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

Learning from a few examples remains a key challenge in machine learning. Despite recent advances in important domains such as vision and language, the standard supervised deep learning paradigm does not offer a satisfactory solution for…

Machine Learning · Computer Science 2018-01-01 Oriol Vinyals , Charles Blundell , Timothy Lillicrap , Koray Kavukcuoglu , Daan Wierstra

With the advances in capturing 2D or 3D skeleton data, skeleton-based action recognition has received an increasing interest over the last years. As skeleton data is commonly represented by graphs, graph convolutional networks have been…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Shijie Li , Jinhui Yi , Yazan Abu Farha , Juergen Gall

Human actions involve complex pose variations and their 2D projections can be highly ambiguous. Thus 3D spatio-temporal or 4D (i.e., 3D+T) human skeletons, which are photometric and viewpoint invariant, are an excellent alternative to 2D+T…

Computer Vision and Pattern Recognition · Computer Science 2022-02-16 Mu-Ruei Tseng , Abhishek Gupta , Chi-Keung Tang , Yu-Wing Tai

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

Adversarial attack on skeletal motion is a hot topic. However, existing researches only consider part of dynamic features when measuring distance between skeleton graph sequences, which results in poor imperceptibility. To this end, we…

Computer Vision and Pattern Recognition · Computer Science 2024-07-01 Feng Liu , Qing Xu , Qijian Zheng

Action prediction is to recognize the class label of an ongoing activity when only a part of it is observed. In this paper, we focus on online action prediction in streaming 3D skeleton sequences. A dilated convolutional network is…

Computer Vision and Pattern Recognition · Computer Science 2019-04-04 Jun Liu , Amir Shahroudy , Gang Wang , Ling-Yu Duan , Alex C. Kot

Imitation learning has been applied to mimic the operation of a human cameraman in several autonomous cinematography systems. To imitate different filming styles, existing methods train multiple models, where each model handles a particular…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 Chong Huang , Yuanjie Dang , Peng Chen , Xin Yang , Kwang-Ting , Cheng

Effective motion representation is crucial for enabling robots to imitate expressive behaviors in real time, yet existing motion controllers often ignore inherent patterns in motion. Previous efforts in representation learning do not…

Robotics · Computer Science 2025-12-09 Matthias Heyrman , Chenhao Li , Victor Klemm , Dongho Kang , Stelian Coros , Marco Hutter

Human action recognition as an important application of computer vision has been studied for decades. Among various approaches, skeleton-based methods recently attract increasing attention due to their robust and superior performance.…

Computer Vision and Pattern Recognition · Computer Science 2021-02-26 Tingtian Li , Zixun Sun , Xiao Chen

Vision-Language Models (VLMs) have demonstrated impressive capabilities in zero-shot action recognition by learning to associate video embeddings with class embeddings. However, a significant challenge arises when relying solely on action…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Yehna Kim , Young-Eun Kim , Seong-Whan Lee

Many modern video-based human action recognition (HAR) approaches use 2D skeleton as the intermediate representation in their prediction pipelines. Despite overall encouraging results, these approaches still struggle in many common scenes,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Zhuoxuan Peng , Yiyi Ding , Yang Lin , S. -H. Gary Chan

This paper focuses on the challenging task of learning 3D object surface reconstructions from single RGB images. Existing methods achieve varying degrees of success by using different geometric representations. However, they all have their…

Computer Vision and Pattern Recognition · Computer Science 2019-04-11 Jiapeng Tang , Xiaoguang Han , Junyi Pan , Kui Jia , Xin Tong

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