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Cohort studies are increasingly using accelerometers for physical activity and sedentary behavior estimation. These devices tend to be less error-prone than self-report, can capture activity throughout the day, and are economical. However,…

Falling, especially in the elderly, is a critical issue to care for and surveil. There have been many studies focusing on fall detection. However, from our survey, there is still no research indicating the prior-fall activities, which we…

Machine Learning · Computer Science 2022-01-11 Pisol Ruenin , Sarayut Techakaew , Patsakorn Towatrakool , Jakarin Chawachat

We present a box-free bottom-up approach for the tasks of pose estimation and instance segmentation of people in multi-person images using an efficient single-shot model. The proposed PersonLab model tackles both semantic-level reasoning…

Computer Vision and Pattern Recognition · Computer Science 2018-03-23 George Papandreou , Tyler Zhu , Liang-Chieh Chen , Spyros Gidaris , Jonathan Tompson , Kevin Murphy

Accurately detecting student behavior in classroom videos can aid in analyzing their classroom performance and improving teaching effectiveness. However, the current accuracy rate in behavior detection is low. To address this challenge, we…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Fan Yang , Tao Wang , Xiaofei Wang

This paper presents a novel approach for automatic recognition of human activities for video surveillance applications. We propose to represent an activity by a combination of category components, and demonstrate that this approach offers…

Computer Vision and Pattern Recognition · Computer Science 2015-03-03 Weiyao Lin , Ming-Ting Sun , Radha Poovendran , Zhengyou Zhang

Video activity recognition by deep neural networks is impressive for many classes. However, it falls short of human performance, especially for challenging to discriminate activities. Humans differentiate these complex activities by…

Computer Vision and Pattern Recognition · Computer Science 2022-01-12 Joseph Chrol-Cannon , Andrew Gilbert , Ranko Lazic , Adithya Madhusoodanan , Frank Guerin

Although psychological research indicates that bodily expressions convey important affective information, to date research in emotion recognition focused mainly on facial expression or voice analysis. In this paper we propose an approach to…

Human-Computer Interaction · Computer Science 2014-02-21 Stefano Piana , Alessandra Staglianò , Francesca Odone , Alessandro Verri , Antonio Camurri

Skeleton-based human action recognition technologies are increasingly used in video based applications, such as home robotics, healthcare on aging population, and surveillance. However, such models are vulnerable to adversarial attacks,…

Computer Vision and Pattern Recognition · Computer Science 2021-01-27 Haekyu Park , Zijie J. Wang , Nilaksh Das , Anindya S. Paul , Pruthvi Perumalla , Zhiyan Zhou , Duen Horng Chau

This work proposes a process for efficiently training a point-wise object detector that enables localizing objects and computing their 6D poses in cluttered and occluded scenes. Accurate pose estimation is typically a requirement for robust…

Computer Vision and Pattern Recognition · Computer Science 2019-02-22 Jean-Philippe Mercier , Chaitanya Mitash , Philippe Giguère , Abdeslam Boularias

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

The passive body-area electrostatic field has recently been aspiringly explored for wearable motion sensing, harnessing its two thrilling characteristics: full-body motion sensitivity and environmental sensitivity, which potentially…

Systems and Control · Electrical Eng. & Systems 2025-01-14 Sizhen Bian , Vitor Fortes Rey , Siyu Yuan , Paul Lukowicz

Assistive devices, such as exoskeletons and prostheses, have revolutionized the field of rehabilitation and mobility assistance. Efficiently detecting transitions between different activities, such as walking, stair ascending and…

In the realm of robot action recognition, identifying distinct but spatially proximate arm movements using vision systems in noisy environments poses a significant challenge. This paper studies robot arm action recognition in noisy…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Elaheh Motamedi , Kian Behzad , Rojin Zandi , Hojjat Salehinejad , Milad Siami

Workplace injuries are common in today's society due to a lack of adequately worn safety equipment. A system that only admits appropriately equipped personnel can be created to improve working conditions. The goal is thus to develop a…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Jonathan Karlsson , Fredrik Strand , Josef Bigun , Fernando Alonso-Fernandez , Kevin Hernandez-Diaz , Felix Nilsson

Within the field of robotics, computer vision remains a significant barrier to progress, with many tasks hindered by inefficient vision systems. This research proposes a generalized vision module leveraging YOLOv9, a state-of-the-art…

Robotics · Computer Science 2025-10-16 Nicolas Pottier , Meng Cheng Lau

Object detection, a crucial aspect of computer vision, has seen significant advancements in accuracy and robustness. Despite these advancements, practical applications still face notable challenges, primarily the inaccurate detection or…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Chun-Lin Ji , Tao Yu , Peng Gao , Fei Wang , Ru-Yue Yuan

This paper proposes a person-centric and online approach to the challenging problem of localization and prediction of actions and interactions in videos. Typically, localization or recognition is performed in an offline manner where all the…

Computer Vision and Pattern Recognition · Computer Science 2016-12-06 Khurram Soomro , Haroon Idrees , Mubarak Shah

This paper presents an open-source software application for analyzing traffic camera footage, focusing on vehicle behavior and braking events at signalized urban highways. The core innovation is a robust ground-plane homography estimation…

Get-Up-and-Go Test is commonly used for assessing the physical mobility of the elderly by physicians. This paper presents a method for automatic analysis and classification of human gait in the Get-Up-and-Go Test using a Microsoft Kinect…

Human-Computer Interaction · Computer Science 2015-11-12 Amir H. Kargar B. , Ali Mollahosseini , Taylor Struemph , Wilson Pace , Rodney D. Nielsen , Mohammad H. Mahoor

We introduce VISUALCENT, a unified human pose and instance segmentation framework to address generalizability and scalability limitations to multi person visual human analysis. VISUALCENT leverages centroid based bottom up keypoint…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Niaz Ahmad , Youngmoon Lee , Guanghui Wang