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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 recent years, as the population ages, falls have increasingly posed a significant threat to the health of the elderly. We propose a real-time fall detection system that integrates the inertial measurement unit (IMU) of a smartphone with…

Machine Learning · Computer Science 2025-03-05 Lingyun Wang , Deqi Su , Aohua Zhang , Yujun Zhu , Weiwei Jiang , Xin He , Panlong Yang

This paper deals with the problem of detecting fallen people lying on the floor by means of a mobile robot equipped with a 3D depth sensor. In the proposed algorithm, inspired by semantic segmentation techniques, the 3D scene is…

Robotics · Computer Science 2019-04-09 Morris Antonello , Marco Carraro , Marco Pierobon , Emanuele Menegatti

Robots operating in populated environments encounter many different types of people, some of whom might have an advanced need for cautious interaction, because of physical impairments or their advanced age. Robots therefore need to…

Robotics · Computer Science 2017-08-03 Andres Vasquez , Marina Kollmitz , Andreas Eitel , Wolfram Burgard

Previous gait phase detection as convolutional neural network (CNN) based classification task requires cumbersome manual setting of time delay or heavy overlapped sliding windows to accurately classify each phase under different test cases,…

Machine Learning · Computer Science 2022-05-11 Jien-De Sui , Wei-Han Chen , Tzyy-Yuang Shiang , Tian-Sheuan Chang

There is a research field of human activity recognition that automatically recognizes a user's physical activity through sensing technology incorporated in smartphones and other devices. When sensing daily activity, various measurement…

Human-Computer Interaction · Computer Science 2021-01-05 Tatsuhito Hasegawa

Remote monitoring of motor functions is a powerful approach for health assessment, especially among the elderly population or among subjects affected by pathologies that negatively impact their walking capabilities. This is further…

Signal Processing · Electrical Eng. & Systems 2022-05-18 Antonio Bevilacqua , Lisa Alcock , Brian Caulfield , Eran Gazit , Clint Hansen , Neil Ireson , Georgiana Ifrim

We present a method to improve the accuracy of a foot-mounted, zero-velocity-aided inertial navigation system (INS) by varying estimator parameters based on a real-time classification of motion type. We train a support vector machine (SVM)…

Robotics · Computer Science 2018-07-17 Brandon Wagstaff , Valentin Peretroukhin , Jonathan Kelly

In recent years, road safety has attracted significant attention from researchers and practitioners in the intelligent transport systems domain. As one of the most common and vulnerable groups of road users, pedestrians cause great concerns…

Robotics · Computer Science 2021-11-09 Zheyu Zhang , Boyang Wang , Chao Lu , Jinghang Li , Cheng Gong , Jianwei Gong

Activity recognition computer vision algorithms can be used to detect the presence of autism-related behaviors, including what are termed "restricted and repetitive behaviors", or stimming, by diagnostic instruments. The limited data that…

Computer Vision and Pattern Recognition · Computer Science 2021-01-12 Peter Washington , Aaron Kline , Onur Cezmi Mutlu , Emilie Leblanc , Cathy Hou , Nate Stockham , Kelley Paskov , Brianna Chrisman , Dennis P. Wall

Intelligent wearable technology plays an increasingly important role in human-computer interaction, motion, and health monitoring. To ensure comfort and practicality of use, one common form for motion monitoring is to utilize soft wearable…

Robotics · Computer Science 2026-05-29 Shuo Wang , Xiaobin Chen , Xiaoming Tao

The last decade's market has been characterized by wearable devices, mainly smartwatches, edge, and cloud computing. A possible application of these technologies is to improve the safety of dangerous activities, especially driving motor…

Emerging Technologies · Computer Science 2023-09-22 Jacopo Sini , Luigi Pugliese , Sara Groppo , Michele Guagnano , Massimo Violante

Activation steering -- adding a vector to a model's residual stream to modify its behavior -- is widely used in safety evaluations as if the model cannot detect the intervention. We test this assumption, introducing steering awareness: a…

Computation and Language · Computer Science 2026-03-20 Joshua Fonseca Rivera , David Demitri Africa

Activity recognition using built-in sensors in smart and wearable devices provides great opportunities to understand and detect human behavior in the wild and gives a more holistic view of individuals' health and well being. Numerous…

Signal Processing · Electrical Eng. & Systems 2020-11-16 Mehrdad Fazli , Kamran Kowsari , Erfaneh Gharavi , Laura Barnes , Afsaneh Doryab

Concentration of drivers on traffic is a vital safety issue; thus, monitoring a driver being on road becomes an essential requirement. The key purpose of supervision is to detect abnormal behaviours of the driver and promptly send warnings…

Signal Processing · Electrical Eng. & Systems 2023-06-09 Hong Nhung Nguyen , Seongwook Lee , Tien Tung Nguyen , Yong Hwa Kim

This paper proposes an interactive system for mobile devices controlled by hand gestures aimed at helping people with visual impairments. This system allows the user to interact with the device by making simple static and dynamic hand…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Samer Alashhab , Antonio Javier Gallego , Miguel Ángel Lozano

The behavior of cyclists when choosing the path to follow along a road network is not uniform. Some of them are mostly interested in minimizing the travelled distance, but some others may also take into account other features such as safety…

Optimization and Control · Mathematics 2025-03-20 Stefano Ardizzoni , Mattia Laurini , Rafael Praxedes , Luca Consolini , Marco Locatelli

The mortality rate for pedestrians using wheelchairs was 36% higher than the overall population pedestrian mortality rate. However, there is no data to clarify the pedestrians' categories in both fatal and nonfatal accidents, since police…

Machine Learning · Computer Science 2022-01-19 Tengfeng Lin , Zhixiong Jin , Seongjin Choi , Hwasoo Yeo

Retailers have long been searching for ways to effectively understand their customers' behaviour in order to provide a smooth and pleasant shopping experience that attracts more customers everyday and maximises their revenue, consequently.…

Computer Vision and Pattern Recognition · Computer Science 2019-06-27 Mohammad Mahdi Kazemi Moghaddam , Ehsan Abbasnejad , Javen Shi

We present a Pedestrian Dominance Model (PDM) to identify the dominance characteristics of pedestrians for robot navigation. Through a perception study on a simulated dataset of pedestrians, PDM models the perceived dominance levels of…

Robotics · Computer Science 2019-02-15 Tanmay Randhavane , Aniket Bera , Emily Kubin , Austin Wang , Kurt Gray , Dinesh Manocha