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Visual object tracking under challenging conditions of motion and light can be hindered by the capabilities of conventional cameras, prone to producing images with motion blur. Event cameras are novel sensors suited to robustly perform…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Irene Perez-Salesa , Rodrigo Aldana-Lopez , Carlos Sagues

The mainstream human activity recognition (HAR) algorithms are developed based on RGB cameras, which are easily influenced by low-quality images (e.g., low illumination, motion blur). Meanwhile, the privacy protection issue caused by…

Computer Vision and Pattern Recognition · Computer Science 2024-09-13 Haoxiang Yang , Chengguo Yuan , Yabin Zhu , Lan Chen , Xiao Wang , Futian Wang

Dynamic vision sensors (DVS) are bio-inspired devices that capture visual information in the form of asynchronous events, which encode changes in pixel intensity with high temporal resolution and low latency. These events provide rich…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Jingkai Sun , Qiang Zhang , Jiaxu Wang , Jiahang Cao , Renjing Xu

Event-based Action Recognition (EAR) has attracted significant attention due to the high temporal resolution and high dynamic range of event cameras. However, existing methods typically suffer from (i) the computational redundancy of dense…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Weidong Hao

Human Activity Recognition (HAR) on resource-constrained wearable devices demands inference models that harmonize accuracy with computational efficiency. This paper introduces TinierHAR, an ultra-lightweight deep learning architecture that…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Sizhen Bian , Mengxi Liu , Vitor Fortes Rey , Daniel Geissler , Paul Lukowicz

This paper proposes a novel method for human hands tracking using data from an event camera. The event camera detects changes in brightness, measuring motion, with low latency, no motion blur, low power consumption and high dynamic range.…

Computer Vision and Pattern Recognition · Computer Science 2023-04-14 Laura Duarte , Mohammad Safeea , Pedro Neto

Low-light image enhancement (LLIE) aims to improve the visibility of images captured in poorly lit environments. Prevalent event-based solutions primarily utilize events triggered by motion, i.e., ''motion events'' to strengthen only the…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Lei Sun , Yuhan Bao , Jiajun Zhai , Jingyun Liang , Yulun Zhang , Kaiwei Wang , Danda Pani Paudel , Luc Van Gool

Upsurging abnormal activities in crowded locations such as airports, train stations, bus stops, shopping malls, etc., urges the necessity for an intelligent surveillance system. An intelligent surveillance system can differentiate between…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Shahriar Jahan , Roknuzzaman , Md Robiul Islam

Multimodal fusion frameworks for Human Action Recognition (HAR) using depth and inertial sensor data have been proposed over the years. In most of the existing works, fusion is performed at a single level (feature level or decision level),…

Machine Learning · Computer Science 2019-10-28 Zeeshan Ahmad , Naimul Khan

Micro-expression analysis has applications in domains such as Human-Robot Interaction and Driver Monitoring Systems. Accurately capturing subtle and fast facial movements remains difficult when relying solely on RGB cameras, due to…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 Nicolas Mastropasqua , Ignacio Bugueno-Cordova , Rodrigo Verschae , Daniel Acevedo , Pablo Negri , Maria E. Buemi

In Intelligent Transportation Systems (ITS), multi-object tracking is primarily based on frame-based cameras. However, these cameras tend to perform poorly under dim lighting and high-speed motion conditions. Event cameras, characterized by…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Mengyu Li , Xingcheng Zhou , Guang Chen , Alois Knoll , Hu Cao

Inertial Measurement Unit (IMU)-based Human Activity Recognition (HAR) aims to interpret and classify user behaviors from temporal motion signals. Recently, deep learning frameworks have advanced this task by learning and extracting…

Signal Processing · Electrical Eng. & Systems 2026-05-12 Peng Liao , Shangsong Liang , Lin Chen , Peijia Zheng

Unobtrusive and smart recognition of human activities using smartphones inertial sensors is an interesting topic in the field of artificial intelligence acquired tremendous popularity among researchers, especially in recent years. A…

Machine Learning · Computer Science 2021-09-21 Meysam Vakili , Masoumeh Rezaei

Human Activity Recognition (HAR) using wearable inertial measurement unit (IMU) sensors can revolutionize healthcare by enabling continual health monitoring, disease prediction, and routine recognition. Despite the high accuracy of Deep…

Human-Computer Interaction · Computer Science 2025-03-17 Azhar Ali Khaked , Nobuyuki Oishi , Daniel Roggen , Paula Lago

Human activity recognition (HAR) on smartglasses has various use cases, including health/fitness tracking and input for context-aware AI assistants. However, current approaches for egocentric activity recognition suffer from low performance…

Computer Vision and Pattern Recognition · Computer Science 2025-04-25 Akhil Padmanabha , Saravanan Govindarajan , Hwanmun Kim , Sergio Ortiz , Rahul Rajan , Doruk Senkal , Sneha Kadetotad

The current gold standard for human activity recognition (HAR) is based on the use of cameras. However, the poor scalability of camera systems renders them impractical in pursuit of the goal of wider adoption of HAR in mobile computing…

Computer Vision and Pattern Recognition · Computer Science 2018-12-04 Eoin Brophy , José Juan Dominguez Veiga , Zhengwei Wang , Alan F. Smeaton , Tomas E. Ward

Recognizing human actions in adverse lighting conditions presents significant challenges in computer vision, with wide-ranging applications in visual surveillance and nighttime driving. Existing methods tackle action recognition and dark…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Anwaar Ulhaq

Event cameras offer the exciting possibility of tracking the camera's pose during high-speed motion and in adverse lighting conditions. Despite this promise, existing event-based monocular visual odometry (VO) approaches demonstrate limited…

Computer Vision and Pattern Recognition · Computer Science 2023-12-18 Simon Klenk , Marvin Motzet , Lukas Koestler , Daniel Cremers

By combining complementary benefits of short- and long-exposure images, Dual-Exposure Imaging (DEI) enhances image quality in low-light scenarios. However, existing DEI approaches inevitably suffer from producing artifacts due to spatial…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Mingyuan Lin , Hongyi Liu , Chu He , Wen Yang , Gui-Song Xia , Lei Yu

Human Activity Recognition (HAR) systems have been extensively studied by the vision and ubiquitous computing communities due to their practical applications in daily life, such as smart homes, surveillance, and health monitoring.…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Hyeongju Choi , Apoorva Beedu , Irfan Essa
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