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In this paper, we develop a new approach of spatially supervised recurrent convolutional neural networks for visual object tracking. Our recurrent convolutional network exploits the history of locations as well as the distinctive visual…

Computer Vision and Pattern Recognition · Computer Science 2016-07-21 Guanghan Ning , Zhi Zhang , Chen Huang , Zhihai He , Xiaobo Ren , Haohong Wang

We present an online approach to efficiently and simultaneously detect and track the 2D pose of multiple people in a video sequence. We build upon Part Affinity Field (PAF) representation designed for static images, and propose an…

Computer Vision and Pattern Recognition · Computer Science 2019-06-14 Yaadhav Raaj , Haroon Idrees , Gines Hidalgo , Yaser Sheikh

Action segmentation as a milestone towards building automatic systems to understand untrimmed videos has received considerable attention in the recent years. It is typically being modeled as a sequence labeling problem but contains…

Computer Vision and Pattern Recognition · Computer Science 2017-05-23 Li Ding , Chenliang Xu

The goal of this paper is to determine the spatio-temporal location of actions in video. Where training from hard to obtain box annotations is the norm, we propose an intuitive and effective algorithm that localizes actions from their class…

Computer Vision and Pattern Recognition · Computer Science 2017-12-14 Pascal Mettes , Cees G. M. Snoek , Shih-Fu Chang

Two-stream convolutional networks have shown strong performance in video action recognition tasks. The key idea is to learn spatiotemporal features by fusing convolutional networks spatially and temporally. However, it remains unclear how…

Computer Vision and Pattern Recognition · Computer Science 2019-03-05 Yunbo Wang , Mingsheng Long , Jianmin Wang , Philip S. Yu

Real-time 3D human action recognition has broad industrial applications, such as surveillance, human-computer interaction, and healthcare monitoring. By relying on complex spatio-temporal local encoding, most existing point cloud sequence…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Xing Li , Qian Huang , Zhijian Wang , Zhenjie Hou , Tianjin Yang , Zhuang Miao

Understanding on-road vehicle behaviour from a temporal sequence of sensor data is gaining in popularity. In this paper, we propose a pipeline for understanding vehicle behaviour from a monocular image sequence or video. A monocular…

Computer Vision and Pattern Recognition · Computer Science 2020-05-13 Sravan Mylavarapu , Mahtab Sandhu , Priyesh Vijayan , K Madhava Krishna , Balaraman Ravindran , Anoop Namboodiri

3D skeleton-based motion prediction and activity recognition are two interwoven tasks in human behaviour analysis. In this work, we propose a motion context modeling methodology that provides a new way to combine the advantages of both…

Computer Vision and Pattern Recognition · Computer Science 2021-08-04 Dianhao Zhang , Ngo Anh Vien , Mien Van , Sean McLoone

Deep convolutional networks have achieved great success for image recognition. However, for action recognition in videos, their advantage over traditional methods is not so evident. We present a general and flexible video-level framework…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Limin Wang , Yuanjun Xiong , Zhe Wang , Yu Qiao , Dahua Lin , Xiaoou Tang , Luc Van Gool

We propose a novel method for real-time face alignment in videos based on a recurrent encoder-decoder network model. Our proposed model predicts 2D facial point heat maps regularized by both detection and regression loss, while uniquely…

Computer Vision and Pattern Recognition · Computer Science 2018-01-19 Xi Peng , Rogerio S. Feris , Xiaoyu Wang , Dimitris N. Metaxas

Recognizing human actions in video sequences, known as Human Action Recognition (HAR), is a challenging task in pattern recognition. While Convolutional Neural Networks (ConvNets) have shown remarkable success in image recognition, they are…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Nguyen Huu Phong , Bernardete Ribeiro

Decoding human activity accurately from wearable sensors can aid in applications related to healthcare and context awareness. The present approaches in this domain use recurrent and/or convolutional models to capture the spatio-temporal…

Human-Computer Interaction · Computer Science 2020-12-21 Satya P. Singh , Aimé Lay-Ekuakille , Deepak Gangwar , Madan Kumar Sharma , Sukrit Gupta

This technical report analyzes a temporal action localization method we used in the HACS competition which is hosted in Activitynet Challenge 2020.The goal of our task is to locate the start time and end time of the action in the untrimmed…

Computer Vision and Pattern Recognition · Computer Science 2020-06-16 Zhiwu Qing , Xiang Wang , Yongpeng Sang , Changxin Gao , Shiwei Zhang , Nong Sang

Robust object tracking requires knowledge of tracked objects' appearance, motion and their evolution over time. Although motion provides distinctive and complementary information especially for fast moving objects, most of the recent…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Hasan Saribas , Hakan Cevikalp , Okan Köpüklü , Bedirhan Uzun

While depth cameras and inertial sensors have been frequently leveraged for human action recognition, these sensing modalities are impractical in many scenarios where cost or environmental constraints prohibit their use. As such, there has…

Computer Vision and Pattern Recognition · Computer Science 2019-02-27 William McNally , Alexander Wong , John McPhee

The video based CNN works have focused on effective ways to fuse appearance and motion networks, but they typically lack utilizing temporal information over video frames. In this work, we present a novel spatio-temporal fusion network…

Computer Vision and Pattern Recognition · Computer Science 2019-06-18 Sangwoo Cho , Hassan Foroosh

This paper presents a new task, the grounding of spatio-temporal identifying descriptions in videos. Previous work suggests potential bias in existing datasets and emphasizes the need for a new data creation schema to better model…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Peratham Wiriyathammabhum , Abhinav Shrivastava , Vlad I. Morariu , Larry S. Davis

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

In this work, we focus on semi-supervised learning for video action detection which utilizes both labeled as well as unlabeled data. We propose a simple end-to-end consistency based approach which effectively utilizes the unlabeled data.…

Computer Vision and Pattern Recognition · Computer Science 2022-07-04 Akash Kumar , Yogesh Singh Rawat

The aim of this research is to recognize human actions performed on stage to aid visually impaired and blind individuals. To achieve this, we have created a theatre human action recognition system that uses skeleton data captured by depth…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Leyla Benhamida , Slimane Larabi