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Proliferation of cheap and accessible cameras makes it possible to measure a subject's breath rate from video footage alone. Recent works on this topic have proposed a variety of approaches for accurately measuring human breath rate,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-04 Alexey Protopopov

Millimeter-wave (mmWave) radar enables contactless respiratory sensing,yet fine-grained monitoring is often degraded by nonstationary interference from body micromotions.To achieve micromotion interference removal,we propose…

Image and Video Processing · Electrical Eng. & Systems 2026-03-24 Yong Wang , Qifan Shen , Bao Zhang , Zijun Huang , Chengbo Zhu , Shuai Yao , Qisong Wu

Remote monitoring of vital signs in infectious patients minimizes the risks of viral transmissions to healthcare professionals. Evidence indicates that donning face masks reduces the risk of viral transmissions and is now the norm in…

Signal Processing · Electrical Eng. & Systems 2021-12-16 Vivian Ci Ai Koh , Yi Yang Ang , Wee Ser , Rex Xiao Tan

Contact-free vital sign monitoring, which uses wireless signals for recognizing human vital signs (i.e, breath and heartbeat), is an attractive solution to health and security. However, the subject's body movement and the change in actual…

Signal Processing · Electrical Eng. & Systems 2023-04-24 Yingqi Wang , Zhongqin Wang , J. Andrew Zhang , Haimin Zhang , Min Xu

Real-time vital sign monitoring is gaining immense significance not only in the medical field but also in personal health management. Facing the needs of different application scenarios of the smart and healthy city in the future, the…

Systems and Control · Electrical Eng. & Systems 2024-05-27 Dingding Liang , Yang Chen , Jiawei Gao , Taixia Shi , Jianping Yao

This paper shows experimentally that standard wireless networks which measure received signal strength (RSS) can be used to reliably detect human breathing and estimate the breathing rate, an application we call "BreathTaking". We show that…

Networking and Internet Architecture · Computer Science 2011-09-20 Neal Patwari , Joey Wilson , Sai Ananthanarayanan P. R. , Sneha K. Kasera , Dwayne Westenskow

Objective: Triaxial accelerometers (TAAs) are widely used in homecare medicine. This study investigates whether TAA signals recorded at the fingertip encode respiratory information, particularly instantaneous respiratory rate (IRR) and…

Medical Physics · Physics 2026-04-28 Jeanne Lin , Lily Liu , Hau-Tieng Wu

Breathing rate is a vital health metric that is an invaluable indicator of the overall health of a person. In recent years, the non-contact measurement of health signals such as breathing rate has been a huge area of development, with a…

Image and Video Processing · Electrical Eng. & Systems 2023-11-16 Robyn Maxwell , Timothy Hanley , Dara Golden , Adara Andonie , Joseph Lemley , Ashkan Parsi

Continuous monitoring of human vital signs using non-contact mmWave radars is attractive due to their ability to penetrate garments and operate under different lighting conditions. Unfortunately, most prior research requires subjects to…

Signal Processing · Electrical Eng. & Systems 2023-03-27 Bo Zhang , Boyu Jiang , Rong Zheng , Xiaoping Zhang , Jun Li , Qiang Xu

Heart rate recovery (HRR) within the initial minute following exercise is a widely utilized metric for assessing cardiac autonomic function in individuals and predicting mortality risk in patients with cardiovascular disease. However,…

Signal Processing · Electrical Eng. & Systems 2025-03-31 Ziheng Mao , Yuan He , Jia Zhang , Yimiao Sun , Yadong Xie , Xiuzhen Guo

Objective: Non-contact physiological measurement is a growing research area that allows capturing vital signs such as heart rate (HR) and breathing rate (BR) comfortably and unobtrusively with remote devices. However, most of the approaches…

Computer Vision and Pattern Recognition · Computer Science 2018-11-21 Weixuan Chen , Javier Hernandez , Rosalind W. Picard

Respiratory rate (RR) can be estimated from the photoplethysmogram (PPG) recorded by optical sensors in wearable devices. The fusion of estimates from different PPG features has lead to an increase in accuracy, but also reduced the numbers…

Signal Processing · Electrical Eng. & Systems 2020-12-03 Jia Zhang , Gaetano Scebba , Walter Karlen

Monitoring the respiratory rate is crucial for helping us identify respiratory disorders. Devices for conventional respiratory monitoring are inconvenient and scarcely available. Recent research has demonstrated the ability of non-contact…

Robotics · Computer Science 2022-07-27 Haimiao Mo , Shuai Ding , Shanlin Yang , Athanasios V. Vasilakos , Xi Zheng

Monitoring breathing rates and patterns helps in the diagnosis and potential avoidance of various health problems. Current solutions for respiratory monitoring, however, are usually invasive and/or limited to medical facilities. In this…

Other Computer Science · Computer Science 2015-05-12 Heba Abdelnasser , Khaled A. Harras , Moustafa Youssef

Measurement of intramuscular oxygen could play a key role in the early diagnosis of acute compartment syndrome, a common condition occurring after severe trauma leading to ischemia and long-term consequences including rhabdomyolysis, limb…

Heart rate (HR) is a crucial physiological signal that can be used to monitor health and fitness. Traditional methods for measuring HR require wearable devices, which can be inconvenient or uncomfortable, especially during sleep and…

In recent years, considerable progress has been made in the non-contact based detection of the respiration rate from video sequences. Common techniques either directly assess the movement of the chest due to breathing or are based on…

Image and Video Processing · Electrical Eng. & Systems 2019-06-20 Fabian Schrumpf , Christoph Moench , Gerold Bausch , Mirco Fuchs

The lack of large video databases obtained from real patients with respiratory disorders makes the design and optimization of video-based monitoring systems quite critical. The purpose of this study is the development of suitable models and…

Applications · Statistics 2023-07-14 Davide Alinovi , Gianluigi Ferrari , Francesco Pisani , Riccardo Raheli

Respiratory diseases account for a significant portion of global mortality. Affordable and early detection is an effective way of addressing these ailments. To this end, a low-cost commercial off-the-shelf (COTS), IEEE 802.15.4z standard…

Signal Processing · Electrical Eng. & Systems 2025-10-22 Anton Lambrecht , Stijn Luchie , Jaron Fontaine , Ben Van Herbruggen , Adnan Shahid , Eli De Poorter

This study presents an effective autofocusing approach for synthetic aperture radar imaging of the human body under conditions of respiratory motion. The proposed method suppresses respiratory-motion-induced phase errors by separating radar…

Signal Processing · Electrical Eng. & Systems 2026-01-13 Masaya Kato , Takuya Sakamoto