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Measures of Activity of Daily Living (ADL) are an important indicator of overall health but difficult to measure in-clinic. Automated and accurate human activity recognition (HAR) using wrist-worn accelerometers enables practical and cost…

Machine Learning · Computer Science 2021-12-24 Niranjan Sridhar , Lance Myers

Activity recognition has shown impressive progress in recent years. However, the challenges of detecting fine-grained activities and understanding how they are combined into composite activities have been largely overlooked. In this work we…

Computer Vision and Pattern Recognition · Computer Science 2015-10-16 Marcus Rohrbach , Anna Rohrbach , Michaela Regneri , Sikandar Amin , Mykhaylo Andriluka , Manfred Pinkal , Bernt Schiele

We demonstrate an approach to face attribute detection that retains or improves attribute detection accuracy across gender and race subgroups by learning demographic information prior to learning the attribute detection task. The system,…

Computer Vision and Pattern Recognition · Computer Science 2018-07-18 Hee Jung Ryu , Hartwig Adam , Margaret Mitchell

Online temporal action localization from an untrimmed video stream is a challenging problem in computer vision. It is challenging because of i) in an untrimmed video stream, more than one action instance may appear, including background…

Computer Vision and Pattern Recognition · Computer Science 2020-03-18 Da-Hye Yoon , Nam-Gyu Cho , Seong-Whan Lee

Human activity recognition based on wearable sensor data has been an attractive research topic due to its application in areas such as healthcare and smart environments. In this context, many works have presented remarkable results using…

Computer Vision and Pattern Recognition · Computer Science 2019-02-04 Artur Jordao , Antonio C. Nazare , Jessica Sena , William Robson Schwartz

Privacy-preserving computer vision is an important emerging problem in machine learning and artificial intelligence. Prevalent methods tackling this problem use differential privacy (DP) or obfuscation techniques to protect the privacy of…

Computer Vision and Pattern Recognition · Computer Science 2024-12-20 David Schneider , Sina Sajadmanesh , Vikash Sehwag , Saquib Sarfraz , Rainer Stiefelhagen , Lingjuan Lyu , Vivek Sharma

User identification has been a major field of research in privacy and security topics. Users might utilize multiple Online Social Networks (OSNs) to access a variety of text, videos, and links, and connect to their friends. Identifying user…

Social and Information Networks · Computer Science 2024-06-05 Yasamin Kowsari

Face video anonymization is aimed at privacy preservation while allowing for the analysis of videos in a number of computer vision downstream tasks such as expression recognition, people tracking, and action recognition. We propose here a…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Anil Egin , Andrea Tangherloni , Antitza Dantcheva

As cameras and computers became popular, the applications of computer vision techniques attracted attention enormously. One of the most important applications in the computer vision community is human activity recognition. In order to…

Computer Vision and Pattern Recognition · Computer Science 2019-07-12 Aras R. Dargazany

Behavior recognition is an important task in video representation learning. An essential aspect pertains to effective feature learning conducive to behavior recognition. Recently, researchers have started to study fine-grained behavior…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Chengyang Hu , Yuduo Chen , Lizhuang Ma

The use of biometrics to authenticate users and control access to secure areas has become extremely popular in recent years, and biometric access control systems are frequently used by both governments and private corporations. However,…

Cryptography and Security · Computer Science 2023-12-04 Justin Spencer , Deborah Lawrence , Prosenjit Chatterjee , Kaushik Roy , Albert Esterline , Jung-Hee Kim

Current state-of-the-art human activity recognition is focused on the classification of temporally trimmed videos in which only one action occurs per frame. We propose a simple, yet effective, method for the temporal detection of activities…

Computer Vision and Pattern Recognition · Computer Science 2016-07-14 Gurkirt Singh , Fabio Cuzzolin

Gait recognition (GR) is a growing biometric modality used for person identification from a distance through visual cameras. GR provides a secure and reliable alternative to fingerprint and face recognition, as it is harder to distinguish…

Computer Vision and Pattern Recognition · Computer Science 2023-09-20 Muhammad Imran Sharif , Mehwish Mehmood , Muhammad Irfan Sharif , Md Palash Uddin

Humans are arguably one of the most important subjects in video streams, many real-world applications such as video summarization or video editing workflows often require the automatic search and retrieval of a person of interest. Despite…

Computer Vision and Pattern Recognition · Computer Science 2021-06-04 Juan Leon Alcazar , Long Mai , Federico Perazzi , Joon-Young Lee , Pablo Arbelaez , Bernard Ghanem , Fabian Caba Heilbron

We present a new adversarial deep learning framework for the problem of human activity recognition (HAR) using inertial sensors worn by people. Our framework incorporates a novel adversarial activity-based discrimination task that addresses…

Signal Processing · Electrical Eng. & Systems 2025-03-19 Francisco M. Calatrava-Nicolás , Shoko Miyauchi , Oscar Martinez Mozos

In recent years, self-supervised learning has attracted widespread academic debate and addressed many of the key issues of computer vision. The present research focus is on how to construct a good agent task that allows for improved network…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Zhijie Xiao , Zhicheng Dong , Hao Xiang

The tremendous applications of human activity recognition are surging its span from health monitoring systems to virtual reality applications. Thus, the automatic recognition of daily life activities has become significant for numerous…

Signal Processing · Electrical Eng. & Systems 2020-07-10 Ivan Miguel Pires , Faisal Hussain , Nuno M. Garcia , Eftim Zdravevski

Advancements in deep neural networks have contributed to near perfect results for many computer vision problems such as object recognition, face recognition and pose estimation. However, human action recognition is still far from…

Computer Vision and Pattern Recognition · Computer Science 2021-10-11 Asanka G. Perera , Yee Wei Law , Titilayo T. Ogunwa , Javaan Chahl

We bring together ideas from recent work on feature design for egocentric action recognition under one framework by exploring the use of deep convolutional neural networks (CNN). Recent work has shown that features such as hand appearance,…

Computer Vision and Pattern Recognition · Computer Science 2016-05-13 Minghuang Ma , Haoqi Fan , Kris M. Kitani

Being able to track an anonymous object, a model-free tracker is comprehensively applicable regardless of the target type. However, designing such a generalized framework is challenged by the lack of object-oriented prior information. As…

Computer Vision and Pattern Recognition · Computer Science 2018-12-18 Xiaolong Jiang , Peizhao Li , Xiantong Zhen , Xianbin Cao