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In this study, a novel method to obtain user-dependent human activity recognition models unobtrusively by exploiting the sensors of a smartphone is presented. The recognition consists of two models: sensor fusion-based user-independent…

Machine Learning · Computer Science 2019-05-30 Pekka Siirtola , Heli Koskimäki , Juha Röning

Image feature matching, a foundational task in computer vision, remains challenging for multimodal image applications, often necessitating intricate training on specific datasets. In this paper, we introduce a Unified Feature Matching…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Yide Di , Yun Liao , Hao Zhou , Kaijun Zhu , Qing Duan , Junhui Liu , Mingyu Lu

Facial expression recognition is an essential task for various applications, including emotion detection, mental health analysis, and human-machine interactions. In this paper, we propose a multi-modal facial expression recognition method…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Jun-Hwa Kim , Namho Kim , Chee Sun Won

Multi-modal retrieval has seen tremendous progress with the development of vision-language models. However, further improving these models require additional labelled data which is a huge manual effort. In this paper, we propose a framework…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Avinash Madasu , Estelle Aflalo , Gabriela Ben Melech Stan , Shachar Rosenman , Shao-Yen Tseng , Gedas Bertasius , Vasudev Lal

The problem of automatic identification of physical activities performed by human subjects is referred to as Human Activity Recognition (HAR). There exist several techniques to measure motion characteristics during these physical…

Machine Learning · Computer Science 2019-06-06 Antonio Bevilacqua , Kyle MacDonald , Aamina Rangarej , Venessa Widjaya , Brian Caulfield , Tahar Kechadi

Human Activity Recognition (HAR) based on wearable inertial sensors plays a critical role in remote health monitoring. In patients with movement disorders, the ability to detect abnormal patient movements in their home environments can…

Motion capture (MoCap) data from wearable Inertial Measurement Units (IMUs) is vital for applications in sports science, but its utility is often compromised by missing data. Despite numerous imputation techniques, a systematic performance…

Machine Learning · Computer Science 2025-07-15 Mahmoud Bekhit , Ahmad Salah , Ahmed Salim Alrawahi , Tarek Attia , Ahmed Ali , Esraa Eldesokey , Ahmed Fathalla

The pervasiveness of Wi-Fi signals provides significant opportunities for human sensing and activity recognition in fields such as healthcare. The sensors most commonly used for passive Wi-Fi sensing are based on passive Wi-Fi radar (PWR)…

Signal Processing · Electrical Eng. & Systems 2022-09-09 Armand K. Koupai , Mohammud J. Bocus , Raul Santos-Rodriguez , Robert J. Piechocki , Ryan McConville

Recognizing human activity plays a significant role in the advancements of human-interaction applications in healthcare, personal fitness, and smart devices. Many papers presented various techniques for human activity representation that…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Reem Abdel-Salam , Rana Mostafa , Mayada Hadhood

First-person activity recognition is rapidly growing due to the widespread use of wearable cameras but faces challenges from domain shifts across different environments, such as varying objects or background scenes. We propose a multimodal…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Cagri Gungor , Adriana Kovashka

4D human perception plays an essential role in a myriad of applications, such as home automation and metaverse avatar simulation. However, existing solutions which mainly rely on cameras and wearable devices are either privacy intrusive or…

Signal Processing · Electrical Eng. & Systems 2023-09-26 Jianfei Yang , He Huang , Yunjiao Zhou , Xinyan Chen , Yuecong Xu , Shenghai Yuan , Han Zou , Chris Xiaoxuan Lu , Lihua Xie

Object manipulation actions represent an important share of the Activities of Daily Living (ADLs). In this work, we study how to enable service robots to use human multi-modal data to understand object manipulation actions, and how they can…

Robotics · Computer Science 2019-07-09 Bahareh Abbasi , Ehsan Noohi , Sina Parastegari , Milos Zefran

This paper presents the first-rank solution for the Multi-Modal Action Recognition Challenge, part of the Multi-Modal Visual Pattern Recognition Workshop at the \acl{ICPR} 2024. The competition aimed to recognize human actions using a…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Anh-Kiet Duong , Petra Gomez-Krämer

Humans are integral components of the transportation ecosystem, and understanding their behaviors is crucial to facilitating the development of safe driving systems. Although recent progress has explored various aspects of human…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Renjie Li , Ruijie Ye , Mingyang Wu , Hao Frank Yang , Zhiwen Fan , Hezhen Hu , Zhengzhong Tu

We propose a novel active learning framework for activity recognition using wearable sensors. Our work is unique in that it takes physical and cognitive limitations of the oracle into account when selecting sensor data to be annotated by…

Machine Learning · Computer Science 2019-07-30 Zhila Esna Ashari , Hassan Ghasemzadeh

With the exponential growth of multimedia data, leveraging multimodal sensors presents a promising approach for improving accuracy in human activity recognition. Nevertheless, accurately identifying these activities using both video data…

Computer Vision and Pattern Recognition · Computer Science 2024-08-09 Rex Liu , Xin Liu

Human activity recognition (HAR) using inertial measurement units (IMUs) increasingly leverages large language models (LLMs), yet existing approaches focus on coarse activities like walking or running. Our preliminary study indicates that…

Computer Vision and Pattern Recognition · Computer Science 2025-04-07 Lilin Xu , Kaiyuan Hou , Xiaofan Jiang

As a critical component of Wearable AI, IMU-based Human Activity Recognition (HAR) has attracted increasing attention from both academia and industry in recent years. Although HAR performance has improved considerably in specific scenarios,…

Signal Processing · Electrical Eng. & Systems 2025-08-19 Yize Cai , Baoshen Guo , Flora Salim , Zhiqing Hong

Finding the position of the user is an important processing step for augmented reality (AR) applications. This paper investigates the use of different motion models in order to choose the most suitable one, and eventually reduce the Kalman…

Other Computer Science · Computer Science 2015-12-10 Erkan Bostanci

Multi-modal fusion is a basic task of autonomous driving system perception, which has attracted many scholars' interest in recent years. The current multi-modal fusion methods mainly focus on camera data and LiDAR data, but pay little…

Robotics · Computer Science 2022-11-14 Yan Gong , Jianli Lu , Jiayi Wu , Wenzhuo Liu