Results 31 to 40 of about 1,258 (163)

Advances in Cuffless Continuous Blood Pressure Monitoring Technology Based on PPG Signals

BioMed Research International, Volume 2022, Issue 1, 2022., 2022
Objective. To review the progress of research on photoplethysmography‐ (PPG‐) based cuffless continuous blood pressure monitoring technologies and prospect the challenges that need to be addressed in the future. Methods. Using Web of Science and PubMed as search engines, the literature on cuffless continuous blood pressure studies using PPG signals in ...
Caijie Qin, Xiaohua Wang, Guangjun Xu, Xibo Ma, Fu-Ming Tsai   +4 more
wiley   +1 more source

A Survey on Deepfake Video Detection

IET Biometrics, Volume 10, Issue 6, Page 607-624, November 2021., 2021
Abstract Recently, deepfake videos, generated by deep learning algorithms, have attracted widespread attention. Deepfake technology can be used to perform face manipulation with high realism. So far, there have been a large amount of deepfake videos circulating on the Internet, most of which target at celebrities or politicians.
Peipeng Yu, Zhihua Xia, Jianwei Fei, Yujiang Lu   +3 more
wiley   +1 more source

Fusion Method to Estimate Heart Rate from Facial Videos Based on RPPG and RBCG

Sensors, 2021
Remote sensing of vital signs has been developed to improve the measurement environment by using a camera without a skin-contact sensor. The camera-based method is based on two concepts, namely color and motion.
Hyunwoo Lee, Ayoung Cho, Mincheol Whang
doaj   +1 more source

Remote Facial Expression and Heart Rate Measurements to Assess Human Reactions in Glass Structures

Advances in Civil Engineering, Volume 2021, Issue 1, 2021., 2021
In engineering applications, human comfort fulfillment is challenging because it depends on several aspects that can be mathematically controlled and optimized, like in case of structural, energy, or thermal issues, and others. Major troubles can indeed derive from combined human reactions, which are related to a multitude of aspects.
Chiara Bedon, Silvana Mattei, Qian Chen
wiley   +1 more source

Adapting remote photoplethysmography for Indonesian subjects: an examination of diverse rPPG techniques

JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga), 2023
Vital sign measurements are essential in intensive care patients, such as in the ICU or emergency department, and also for newborns or prenatal babies. The duty nurse usually monitors these vital signs by manually writing down the patient's condition on a large piece of paper in front of the patient's room.
Istighfariza Aprini, Martin Clinton Tosima Manullang   +1 more
openaire   +1 more source

Towards Face Presentation Attack Detection Based on Residual Color Texture Representation

Security and Communication Networks, Volume 2021, Issue 1, 2021., 2021
Most existing face authentication systems have limitations when facing the challenge raised by presentation attacks, which probably leads to some dangerous activities when using facial unlocking for smart device, facial access to control system, and face scan payment.
Yuting Du, Tong Qiao, Ming Xu, Ning Zheng, Beijing Chen   +4 more
wiley   +1 more source

Noncontact Heart Rate Measurement Using a Webcam, Based on Joint Blind Source Separation and a Skin Reflection Model: For a Wide Range of Imaging Conditions

Journal of Sensors, Volume 2021, Issue 1, 2021., 2021
Remote photoplethysmography (rPPG) can be used for noncontact and continuous measurement of the heart rate (HR). Currently, the main factors affecting the accuracy and robustness of rPPG‐based HR measurement methods are the subject’s skin tone, body movement, exercise recovery, and variable or inadequate illumination.
Boyuan Zhang, Hengkang Li, Lisheng Xu, Lin Qi, Yudong Yao, Stephen E. Greenwald, Carlos Marques   +6 more
wiley   +1 more source

Evaluation of biases in remote photoplethysmography methods

npj Digital Medicine, 2021
This work investigates the estimation biases of remote photoplethysmography (rPPG) methods for pulse rate measurement across diverse demographics.
Ananyananda Dasari, Sakthi Kumar Arul Prakash, László A. Jeni, Conrad S. Tucker   +3 more
doaj   +1 more source

Prediction of Heart Wellness Based on the Analysis of Skin Color

Engineering Proceedings, 2023
Heart rate monitoring is crucial in scientific and technical fields as it provides essential information about cardiovascular health, exercise performance, and stress levels, enabling early detection of and intervention for potential cardiac ...
Kavya Sree Kammari, Neetu Srivastava, Ioannis Sarris   +2 more
doaj   +1 more source

Heart rate estimation by leveraging static and dynamic region weights [PDF]

, 2023
As the demand for long-term health evaluation grows, researchers show increased interest in remote photoplethysmography studies. However, conventional methods are vulnerable to noise interference caused by non-rigid facial movements (facial expression ...
Feng, Xiaoyi, Liu, Lili, Peng, Jinye, Xia, Zhaoqiang, Zhang, Xiaobiao, Zhao, Guoying   +5 more
core   +1 more source