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In this paper we address the problem of human action recognition from video sequences. Inspired by the exemplary results obtained via automatic feature learning and deep learning approaches in computer vision, we focus our attention towards…

Computer Vision and Pattern Recognition · Computer Science 2017-04-06 Harshala Gammulle , Simon Denman , Sridha Sridharan , Clinton Fookes

This paper addresses the problem of continuous gesture recognition from sequences of depth maps using convolutional neutral networks (ConvNets). The proposed method first segments individual gestures from a depth sequence based on quantity…

Computer Vision and Pattern Recognition · Computer Science 2016-09-13 Pichao Wang , Wanqing Li , Song Liu , Yuyao Zhang , Zhimin Gao , Philip Ogunbona

Typical human actions last several seconds and exhibit characteristic spatio-temporal structure. Recent methods attempt to capture this structure and learn action representations with convolutional neural networks. Such representations,…

Computer Vision and Pattern Recognition · Computer Science 2017-06-05 Gül Varol , Ivan Laptev , Cordelia Schmid

Convolutional neural networks with spatio-temporal 3D kernels (3D CNNs) have an ability to directly extract spatio-temporal features from videos for action recognition. Although the 3D kernels tend to overfit because of a large number of…

Computer Vision and Pattern Recognition · Computer Science 2017-08-28 Kensho Hara , Hirokatsu Kataoka , Yutaka Satoh

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

With the fast development of effective and low-cost human skeleton capture systems, skeleton-based action recognition has attracted much attention recently. Most existing methods use Convolutional Neural Network (CNN) and Recurrent Neural…

Computer Vision and Pattern Recognition · Computer Science 2019-04-12 Wu Zheng , Lin Li , Zhaoxiang Zhang , Yan Huang , Liang Wang

Scene flow describes the motion of 3D objects in real world and potentially could be the basis of a good feature for 3D action recognition. However, its use for action recognition, especially in the context of convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2017-03-28 Pichao Wang , Wanqing Li , Zhimin Gao , Yuyao Zhang , Chang Tang , Philip Ogunbona

Skeleton-based action recognition has recently attracted a lot of attention. Researchers are coming up with new approaches for extracting spatio-temporal relations and making considerable progress on large-scale skeleton-based datasets.…

Computer Vision and Pattern Recognition · Computer Science 2019-12-19 Sangwoo Cho , Muhammad Hasan Maqbool , Fei Liu , Hassan Foroosh

Attribute recognition has become crucial because of its wide applications in many computer vision tasks, such as person re-identification. Like many object recognition problems, variations in viewpoints, illumination, and recognition at far…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Hao Liu , Jingjing Wu , Jianguo Jiang , Meibin Qi , Bo Ren

Deep learning has been demonstrated to achieve excellent results for image classification and object detection. However, the impact of deep learning on video analysis (e.g. action detection and recognition) has been limited due to…

Computer Vision and Pattern Recognition · Computer Science 2017-08-03 Rui Hou , Chen Chen , Mubarak Shah

Human motion prediction is an increasingly interesting topic in computer vision and robotics. In this paper, we propose a new 2D CNN based network, TrajectoryNet, to predict future poses in the trajectory space. Compared with most existing…

Computer Vision and Pattern Recognition · Computer Science 2020-03-23 Xiaoli Liu , Jianqin Yin , Jin Liu , Pengxiang Ding , Jun Liu , Huaping Liu

Skeleton data carries valuable motion information and is widely explored in human action recognition. However, not only the motion information but also the interaction with the environment provides discriminative cues to recognize the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-11 Liang Xu , Cuiling Lan , Wenjun Zeng , Cewu Lu

Two-stream Convolutional Networks (ConvNets) have shown strong performance for human action recognition in videos. Recently, Residual Networks (ResNets) have arisen as a new technique to train extremely deep architectures. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2016-11-08 Christoph Feichtenhofer , Axel Pinz , Richard P. Wildes

Skeleton-based action recognition, which classifies human actions based on the coordinates of joints and their connectivity within skeleton data, is widely utilized in various scenarios. While Graph Convolutional Networks (GCNs) have been…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Jeonghyeok Do , Munchurl Kim

The recognition of actions from video sequences has many applications in health monitoring, assisted living, surveillance, and smart homes. Despite advances in sensing, in particular related to 3D video, the methodologies to process the…

Computer Vision and Pattern Recognition · Computer Science 2018-10-03 Rui Zhao , Haider Ali , Patrick van der Smagt

Human actions in video sequences are three-dimensional (3D) spatio-temporal signals characterizing both the visual appearance and motion dynamics of the involved humans and objects. Inspired by the success of convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2015-10-05 Lin Sun , Kui Jia , Dit-Yan Yeung , Bertram E. Shi

Pose-based action recognition has drawn considerable attention recently. Existing methods exploit the joint positions to extract the body-part features from the activation map of the convolutional networks to assist human action…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Lei Shi , Yifan Zhang , Jian Cheng , Hanqing Lu

Spatiotemporal and motion features are two complementary and crucial information for video action recognition. Recent state-of-the-art methods adopt a 3D CNN stream to learn spatiotemporal features and another flow stream to learn motion…

Computer Vision and Pattern Recognition · Computer Science 2019-08-19 Boyuan Jiang , Mengmeng Wang , Weihao Gan , Wei Wu , Junjie Yan

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

In this paper we propose the use of quantum genetic algorithm to optimize the support vector machine (SVM) for human action recognition. The Microsoft Kinect sensor can be used for skeleton tracking, which provides the joints' position…

Machine Learning · Statistics 2017-12-18 Yafeng Liu , Shimin Feng , Zhikai Zhao , Enjie Ding
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