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In visual surveillance systems, it is necessary to recognize the behavior of people handling objects such as a phone, a cup, or a plastic bag. In this paper, to address this problem, we propose a new framework for recognizing object-related…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Sunoh Kim , Kimin Yun , Jongyoul Park , Jin Young Choi

Few-shot action recognition (FSAR) aims to classify human actions in videos with only a small number of labeled samples per category. The scarcity of training data has driven recent efforts to incorporate additional modalities, particularly…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Zefeng Qian , Xincheng Yao , Yifei Huang , Chongyang Zhang , Jiangyong Ying , Hong Sun

Vision-language-action (VLA) models show potential for general robotic tasks, but remain challenging in spatiotemporally coherent manipulation, which requires fine-grained representations. Typically, existing methods embed 3D positions into…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Hanyu Zhou , Chuanhao Ma , Gim Hee Lee

In this paper, a novel video classification method is presented that aims to recognize different categories of third-person videos efficiently. Our motivation is to achieve a light model that could be trained with insufficient training…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Ali Javidani , Ahmad Mahmoudi-Aznaveh

Advances in Deep Learning have recently made it possible to recover full 3D meshes of human poses from individual images. However, extension of this notion to videos for recovering temporally coherent poses still remains unexplored. A major…

Computer Vision and Pattern Recognition · Computer Science 2019-07-02 Jian Liu , Naveed Akhtar , Ajmal Mian

This paper presents a lightweight three-dimensional convolutional neural network (3DCNN) for human activity recognition (HAR) using event-based vision data. Privacy preservation is a key challenge in human monitoring systems, as…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Mehdi Sefidgar Dilmaghani , Francis Fowley , Peter Corcoran

Action Detection is a complex task that aims to detect and classify human actions in video clips. Typically, it has been addressed by processing fine-grained features extracted from a video classification backbone. Recently, thanks to the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-02 Matteo Tomei , Lorenzo Baraldi , Simone Calderara , Simone Bronzin , Rita Cucchiara

Recent methods for video action recognition have reached outstanding performances on existing benchmarks. However, they tend to leverage context such as scenes or objects instead of focusing on understanding the human action itself. For…

Computer Vision and Pattern Recognition · Computer Science 2021-02-03 Philippe Weinzaepfel , Grégory Rogez

Existing skeleton-based human action classification models rely on well-trimmed action-specific skeleton videos for both training and testing, precluding their scalability to real-world applications where untrimmed videos exhibiting…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Haitao Tian , Pierre Payeur

Analyzing human motion is a challenging task with a wide variety of applications in computer vision and in graphics. One such application, of particular importance in computer animation, is the retargeting of motion from one performer to…

Computer Vision and Pattern Recognition · Computer Science 2019-05-13 Kfir Aberman , Rundi Wu , Dani Lischinski , Baoquan Chen , Daniel Cohen-Or

The problem of predicting human motion given a sequence of past observations is at the core of many applications in robotics and computer vision. Current state-of-the-art formulate this problem as a sequence-to-sequence task, in which a…

Computer Vision and Pattern Recognition · Computer Science 2020-03-25 Enric Corona , Albert Pumarola , Guillem Alenyà , Francesc Moreno-Noguer

The lack of fine-grained joints (facial joints, hand fingers) is a fundamental performance bottleneck for state of the art skeleton action recognition models. Despite this bottleneck, community's efforts seem to be invested only in coming…

Computer Vision and Pattern Recognition · Computer Science 2021-11-25 Neel Trivedi , Anirudh Thatipelli , Ravi Kiran Sarvadevabhatla

Few-shot action recognition aims to address the high cost and impracticality of manually labeling complex and variable video data in action recognition. It requires accurately classifying human actions in videos using only a few labeled…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Yuyang Wanyan , Xiaoshan Yang , Weiming Dong , Changsheng Xu

Most state-of-the-art methods for action recognition rely only on 2D spatial features encoding appearance, motion or pose. However, 2D data lacks the depth information, which is crucial for recognizing fine-grained actions. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2020-11-30 Mattia Segu , Federico Pirovano , Gianmario Fumagalli , Amedeo Fabris

Human activity discovery aims to cluster the activities performed by humans without any prior information on what defines each activity. Most methods presented in human activity recognition are supervised, where there are labeled inputs to…

Computer Vision and Pattern Recognition · Computer Science 2022-10-19 Parham Hadikhani , Daphne Teck Ching Lai , Wee-Hong Ong

Reconstructing 3D human-object interaction (HOI) from single-view RGB images is challenging due to the absence of depth information and potential occlusions. Existing methods simply predict the body poses merely rely on network training on…

Computer Vision and Pattern Recognition · Computer Science 2024-07-22 Yuhang Chen , Chenxing Wang

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

We present Avatar4D, a real-world transferable pipeline for generating customizable synthetic human motion datasets tailored to domain-specific applications. Unlike prior works, which focus on general, everyday motions and offer limited…

Computer Vision and Pattern Recognition · Computer Science 2025-12-19 Jerrin Bright , Zhibo Wang , Dmytro Klepachevskyi , Yuhao Chen , Sirisha Rambhatla , David Clausi , John Zelek

Reliable 4D object detection, which refers to 3D object detection in streaming video, is crucial for perceiving and understanding the real world. Existing open-set 4D object detection methods typically make predictions on a frame-by-frame…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Jiawei Hou , Shenghao Zhang , Can Wang , Zheng Gu , Yonggen Ling , Taiping Zeng , Xiangyang Xue , Jingbo Zhang

Sliding window is one direct way to extend a successful recognition system to handle the more challenging detection problem. While action recognition decides only whether or not an action is present in a pre-segmented video sequence, action…

Computer Vision and Pattern Recognition · Computer Science 2015-12-29 Moustafa Meshry , Mohamed E. Hussein , Marwan Torki