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Sleep and mental health are highly related concepts, and it is an important research and clinical priority to understand their interactions. In-bed sensors using ballistocardiography provide the possibility of unobtrusive measurements of…

Signal Processing · Electrical Eng. & Systems 2023-11-23 Samuel Askjer , Kim Mathiasen , Ali Amidi , Christine Parsons , Nicolai Ladegaard

With the increasing popularity of telehealth, it becomes critical to ensure that basic physiological signals can be monitored accurately at home, with minimal patient overhead. In this paper, we propose a contactless approach for monitoring…

Machine Learning · Computer Science 2022-12-08 Hao He , Yuan Yuan , Ying-Cong Chen , Peng Cao , Dina Katabi

Remote photoplethysmography (rPPG) is a non-contact technique for measuring human physiological signals. Due to its convenience and non-invasiveness, it has demonstrated broad application potential in areas such as health monitoring and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Zhipeng Li , Kegang Wang , Hanguang Xiao , Xingyue Liu , Feizhong Zhou , Jiaxin Jiang , Tianqi Liu

Human health can be critically affected by cardiovascular diseases, such as hypertension, arrhythmias, and stroke. Heart rate and blood pressure are important biometric information for the monitoring of cardiovascular system and early…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Gyutae Hwang , Sang Jun Lee

Breathing rate (BR), minute ventilation (VE), and other respiratory parameters are essential for real-time patient monitoring in many acute health conditions, such as asthma. The clinical standard for measuring respiration, namely…

Signal Processing · Electrical Eng. & Systems 2020-11-26 Ridwan Alam , David B. Peden , John C. Lach

Sleep stage classification is crucial for diagnosing and managing disorders such as sleep apnea and insomnia. Conventional clinical methods like polysomnography are costly and impractical for long-term home use. We present an…

Signal Processing · Electrical Eng. & Systems 2025-08-19 Zahra Mohammadi , Parnian Fazel , Siamak Mohammadi

Objective: Sleep related respiratory abnormalities are typically detected using polysomnography. There is a need in general medicine and critical care for a more convenient method to automatically detect sleep apnea from a simple,…

Contact-free detection of human vital signs like heart rate and respiration rate will improve the patients' comfort and enables long-term monitoring of newborns or bedridden patients. For that, reliable and safe measurement techniques are…

Medical Physics · Physics 2020-07-28 Roman Kusche , Fabian John , Marco Cimdins , Horst Hellbrueck

This study proposes a data fusion method for multiradar systems to enable measurement of the respiration of multiple people located at arbitrary positions. Using the proposed method, the individual respiration rates of multiple people can…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Shunsuke Iwata , Takato Koda , Takuya Sakamoto

Pulmonary lobe segmentation is an important task for pulmonary disease related Computer Aided Diagnosis systems (CADs). Classical methods for lobe segmentation rely on successful detection of fissures and other anatomical information such…

Computer Vision and Pattern Recognition · Computer Science 2019-04-11 Hao Tang , Chupeng Zhang , Xiaohui Xie

This paper presents a deep learning system applied for detecting anomalies from respiratory sound recordings. Our system initially performs audio feature extraction using Continuous Wavelet transformation. This transformation converts the…

Sound · Computer Science 2023-06-28 Dat Ngo , Lam Pham , Huy Phan , Minh Tran , Delaram Jarchi

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

Indoor air quality in schools and classrooms is paramount for the health and well-being of pupils and staff. CO2 monitors offer a cost-effective way to assess and manage ventilation provision. However, often only a single point measurement…

Fluid Dynamics · Physics 2024-01-31 Carolanne V. M. Vouriot , Maarten van Reeuwijk , Henry C. Burridge

Breathing signal monitoring can provide important clues for human's physical health problems. Comparing to existing techniques that require wearable devices and special equipment, a more desirable approach is to provide contact-free and…

Computational Engineering, Finance, and Science · Computer Science 2017-02-08 Xuyu Wang , Chao Yang , Shiwen Mao

The quality of cardiac magnetic resonance (CMR) imaging is susceptible to respiratory motion artifacts. The model robustness of automated segmentation techniques in face of real-world respiratory motion artifacts is unclear. This manuscript…

Image and Video Processing · Electrical Eng. & Systems 2022-10-13 Shuo Wang , Chen Qin , Chengyan Wang , Kang Wang , Haoran Wang , Chen Chen , Cheng Ouyang , Xutong Kuang , Chengliang Dai , Yuanhan Mo , Zhang Shi , Chenchen Dai , Xinrong Chen , He Wang , Wenjia Bai

Crucial for healthcare and biomedical applications, respiration monitoring often employs wearable sensors in practice, causing inconvenience due to their direct contact with human bodies. Therefore, researchers have been constantly…

Machine Learning · Computer Science 2021-11-17 Tianyue Zheng , Zhe Chen , Shujie Zhang , Chao Cai , Jun Luo

Sleep posture analysis is widely used for clinical patient monitoring and sleep studies. Earlier research has revealed that sleep posture highly influences symptoms of diseases such as apnea and pressure ulcers. In this study, we propose a…

Machine Learning · Computer Science 2021-04-07 Vandad Davoodnia , Ali Etemad

Respiratory auscultation is crucial for early detection of pediatric pneumonia, a condition that can quickly worsen without timely intervention. In areas with limited physician access, effective auscultation is challenging. We present a…

Human-Computer Interaction · Computer Science 2025-04-23 Seung Gyu Jeong , Sung Woo Nam , Seong Kwan Jung , Seong-Eun Kim

Sleep apnea (SA) is a significant respiratory condition that poses a major global health challenge. Previous studies have investigated several machine and deep learning models for electrocardiogram (ECG)-based SA diagnoses. Despite these…

Machine Learning · Computer Science 2023-11-28 Hieu X. Nguyen , Duong V. Nguyen , Hieu H. Pham , Cuong D. Do

Respiratory rate (RR) is a vital sign with significant diagnostic value. Existing RR monitors often suffer from baseline drift over time, breaths can be occluded by limb or body movements, and many systems struggle to resolve shallow or…