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Camera-based physiological monitoring, such as remote photoplethysmography (rPPG), captures subtle variations in skin optical properties caused by pulsatile blood volume changes using standard digital camera sensors. The demand for…

图像与视频处理 · 电气工程与系统科学 2026-01-05 Nicky Nirlipta Sahoo , VS Sachidanand , Matcha Naga Gayathri , Balamurali Murugesan , Keerthi Ram , Jayaraj Joseph , Mohanasankar Sivaprakasam

Photoplethysmography (PPG) is a non-invasive and economical technique to extract vital signs of the human body. Although it has been widely used in consumer and research grade wrist devices to track a user's physiology, the PPG signal is…

信号处理 · 电气工程与系统科学 2021-09-08 Runyu Mao , Mackenzie Tweardy , Stephan W. Wegerich , Craig J. Goergen , George R. Wodicka , Fengqing Zhu

Photoplethysmography (PPG) refers to the measurement of variations in blood volume using light and is a feature of most wearable devices. The PPG signals provide insight into the body's circulatory system and can be employed to extract…

信号处理 · 电气工程与系统科学 2024-01-17 Yuyang Miao , Harry J. Davies , Danilo P. Mandic

Photoplethysmogram (PPG) and electrocardiogram (ECG) are commonly recorded in intesive care unit (ICU) and operating room (OR). However, the high incidence of poor, incomplete, and inconsistent signal quality, can lead to false alarms or…

机器学习 · 计算机科学 2025-09-16 Zongheng Guo , Tao Chen , Manuela Ferrario

Unsupervised remote photoplethysmography (rPPG) promises to leverage unlabeled video data, but its potential is hindered by a critical challenge: training on low-quality "in-the-wild" videos severely degrades model performance. An essential…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Tianyang Dai , Ming Chang , Yan Chen , Yang Hu

Remote photoplethysmography (rPPG) is a promising technology that consists of contactless measuring of cardiac activity from facial videos. Most recent approaches utilize convolutional networks with limited temporal modeling capability or…

计算机视觉与模式识别 · 计算机科学 2024-02-20 Marko Savic , Guoying Zhao

This paper shows how the dynamics of the PhotoPlethysmoGraphic (PPG) signal, an easily accessible biological signal from which valuable diagnostic information can be extracted, of young and healthy individuals performs at different…

信号处理 · 电气工程与系统科学 2020-06-11 Javier de Pedro-Carracedo , David Fuentes-Jimenez , Ana M. Ugena , Ana P. Gonzalez-Marcos

This study evaluates remote Photopletismography (rPPG) algorithms, Spatial Subspace Rotation (2SR), Chrominance-based method (CHROM), Plane-Orthogonal-to-Skin (POS), and Principal Component Analysis (PCA), applied to selected…

图像与视频处理 · 电气工程与系统科学 2026-05-26 Đorđe D. Nešković , Nadica Miljković

Photoplethysmography (PPG) is a cost-effective and non-invasive technique that utilizes optical methods to measure cardiac physiology. PPG has become increasingly popular in health monitoring and is used in various commercial and clinical…

机器学习 · 计算机科学 2024-06-13 Khuong Vo , Mostafa El-Khamy , Yoojin Choi

Photoplethysmography (PPG) is a non-invasive technology that measures changes in blood volume in the microvascular bed of tissue. It is commonly used in medical devices such as pulse oximeters and wrist worn heart rate monitors to monitor…

Smartwatches have become popular for monitoring physiological parameters outside clinical settings. Using reflective photoplethysmography (PPG) sensors, such watches can non-invasively estimate heart rate (HR) in everyday environments and…

信号处理 · 电气工程与系统科学 2024-12-24 Manuel Meier , Christian Holz

Depression is a mental illness that may be harmful to an individual's health. The detection of mental health disorders in the early stages and a precise diagnosis are critical to avoid social, physiological, or psychological side effects.…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Constantino Álvarez Casado , Manuel Lage Cañellas , Miguel Bordallo López

Continuous photoplethysmography (PPG)-based blood pressure monitoring is necessary for healthcare and fitness applications. In Artificial Intelligence (AI), signal classification levels with the machine and deep learning arrangements need…

计算机视觉与模式识别 · 计算机科学 2024-05-24 Nida Nasir , Mustafa Sameer , Feras Barneih , Omar Alshaltone , Muneeb Ahmed

Many remote photoplethysmography (rPPG) estimation models have achieved promising performance in the training domain but often fail to accurately estimate physiological signals or heart rates (HR) in the target domains. Domain…

计算机视觉与模式识别 · 计算机科学 2024-08-16 Pei-Kai Huang , Tzu-Hsien Chen , Ya-Ting Chan , Kuan-Wen Chen , Chiou-Ting Hsu

Remote photoplethysmography (rPPG) enables non-contact physiological measurement but remains highly susceptible to illumination changes, motion artifacts, and limited temporal modeling. Large Language Models (LLMs) excel at capturing…

计算机视觉与模式识别 · 计算机科学 2026-03-06 Yiping Xie , Bo Zhao , Mingtong Dai , Jian-Ping Zhou , Yue Sun , Tao Tan , Weicheng Xie , Linlin Shen , Zitong Yu

Camera-based remote photoplethysmography (rPPG) enables contactless measurement of important physiological signals such as pulse rate (PR). However, dynamic and unconstrained subject motion introduces significant variability into the facial…

计算机视觉与模式识别 · 计算机科学 2024-05-02 Sam Cantrill , David Ahmedt-Aristizabal , Lars Petersson , Hanna Suominen , Mohammad Ali Armin

Amongst all medical biometric traits, Photoplethysmograph (PPG) is the easiest to acquire. PPG records the blood volume change with just combination of Light Emitting Diode and Photodiode from any part of the body. With IoT and smart homes'…

密码学与安全 · 计算机科学 2017-12-25 Umang Yadav , Sherif N Abbas , Dimitrios Hatzinakos

Remote physiological sensing using camera-based technologies offers transformative potential for non-invasive vital sign monitoring across healthcare and human-computer interaction domains. Although deep learning approaches have advanced…

计算机视觉与模式识别 · 计算机科学 2025-05-13 Jitesh Joshi , Youngjun Cho

Remote Photoplethysmography (rPPG) is a non-contact method that uses facial video to predict changes in blood volume, enabling physiological metrics measurement. Traditional rPPG models often struggle with poor generalization capacity in…

计算机视觉与模式识别 · 计算机科学 2024-09-19 Yiping Xie , Zitong Yu , Bingjie Wu , Weicheng Xie , Linlin Shen

Remote photoplethysmography (rPPG), which aims at measuring heart activities without any contact, has great potential in many applications (e.g., remote healthcare). Existing end-to-end rPPG and heart rate (HR) measurement methods from…

计算机视觉与模式识别 · 计算机科学 2020-08-26 Zitong Yu , Xiaobai Li , Xuesong Niu , Jingang Shi , Guoying Zhao