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A Contactless Respiratory Rate Estimation Method Using a Hermite Magnification Technique and Convolutional Neural Networks

Jorge Brieva, Hiram Ponce, Ernesto Moya-Albor
2020 Applied Sciences  
In this paper, we present a new non-contact strategy to estimate respiratory rate based on Eulerian motion video magnification technique using Hermite transform and a system based on a Convolutional Neural  ...  The monitoring of respiratory rate is a relevant factor in medical applications and day-to-day activities.  ...  Respiratory Rate Estimation The proposed respiratory rate measuring system is based on motion magnification technique using Hermite transform and a CNN to classify the frames.  ... 
doi:10.3390/app10020607 fatcat:r6oz7ivluzectayxcr2gyz4ipq

Non-Contact Automatic Vital Signs Monitoring of Infants in a Neonatal Intensive Care Unit Based on Neural Networks

Fatema-Tuz-Zohra Khanam, Asanka G. Perera, Ali Al-Naji, Kim Gibson, Javaan Chahl
2021 Journal of Imaging  
Therefore, we conducted a single-center study to remotely monitor the heart rate (HR) and respiratory rate (RR) of seven infants in NICU using a digital camera.  ...  They showed a strong correlation using the Pearson correlation coefficients (PCC) of 0.9864 and 0.9453 for HR and RR, respectively, and a lower error rate with RMSE 2.23 beats/min and 2.69 breaths/min  ...  The input video was processed for automatic ROI detection, and the ROI was processed separately for heart rate and respiratory rate detection.  ... 
doi:10.3390/jimaging7080122 pmid:34460758 pmcid:PMC8404938 fatcat:u3huhi2ja5cnjnzdmj326ekj4i

Non-Contact Video-Based Neonatal Respiratory Monitoring

Scott L. Rossol, Jeffrey K. Yang, Caroline Toney-Noland, Janine Bergin, Chandan Basavaraju, Pavan Kumar, Henry C. Lee
2020 Children  
The final algorithm used a proprietary technique of micromotion and stationarity detection (MSD) to model background noise to be able to amplify and record respiratory motions.  ...  Respiratory rate (RR) has been shown to be a reliable predictor of cardio-pulmonary deterioration, but standard RR monitoring methods in the neonatal intensive care units (NICU) with contact leads have  ...  Eulerian Video Magnification Followed by Motion Extraction The initial technique for extracting RR from footage was an Eulerian video magnification (EVM) algorithm to amplify movement, followed by a motion  ... 
doi:10.3390/children7100171 pmid:33036226 fatcat:gnup4ggqbjdi5o6gd4bd6g56yq

Non-contact heart and respiratory rate monitoring of preterm infants based on a computer vision system: a protocol for a method comparison study (Preprint)

Kim Gibson, Ali Al-Naji, Julie Fleet, Mary Steen, Javaan Chahl, Scott Morris
2019 JMIR Research Protocols  
Biomedical research in the application of noncontact methods to measure heart rate (HR) and respiratory rate (RR) in the neonatal population has produced mixed results.  ...  discusses a protocol for conducting a method comparison study, which aims to determine the accuracy of a proposed noncontact computer vision system to detect HR and RR relative to the HR and RR obtained by  ...  After amplifying the video, the region of interest (ROI) will be manually localized using the MATLAB built-in function ginput.  ... 
doi:10.2196/13400 pmid:31469077 pmcid:PMC6786848 fatcat:7o5cm2lbzbartasv75nizq623a

Respiration Monitoring for Premature Neonates in NICU

Yue Sun, Wenjin Wang, Xi Long, Mohammed Meftah, Tao Tan, Caifeng Shan, Ronald M. Aarts, Peter H. N. de With
2019 Applied Sciences  
The respiratory signal is further extracted via motion factorization.  ...  The experimental results are promising for further investigation and clinical application of the video-based respiration monitoring method for infants in NICUs.  ...  They used Eulerian video magnification (EVM) to amplify the respiration movements, which was followed by optical flow to estimate the respiration motion and therefore, obtained a respiration signal.  ... 
doi:10.3390/app9235246 fatcat:he5pjohluveapgcd3tubk2c3da

A real-time camera-based adaptive breathing monitoring system

Yu-Ching Lee, Abdan Syakura, Muhammad Adil Khalil, Ching-Ho Wu, Yi-Fang Ding, Ching-Wei Wang
2021 Medical and Biological Engineering and Computing  
Graphical abstract The proposed system flowchart to extract the respiratory pattern from video.  ...  Non-contact-based measurements of both breathing rate and changes in breathing rate help monitor health condition of subjects more flexibly.  ...  [26] use the motion magnification technique to measure RR from the video. Al-Naji et al.'  ... 
doi:10.1007/s11517-021-02371-5 pmid:34101126 pmcid:PMC8185321 fatcat:mkkiay6gz5azdflxtydvsanhu4

Remote Monitoring of Vital Signs in Diverse Non-Clinical and Clinical Scenarios Using Computer Vision Systems: A Review

Khanam, Al-Naji, Chahl
2019 Applied Sciences  
From this review it emerges that automatic multiple regions of interest (ROIs) selection, removal of noise artefacts caused by both illumination variations and motion artefacts, simultaneous multiple person  ...  Techniques for noncontact measurement of vital signs using camera imaging technologies have been attracting increasing attention.  ...  [62] presented a noncontact respiratory monitoring scheme for detecting and measuring respiratory rates as well as respiratory cycle timing parameters by using a video camera from the movement of the  ... 
doi:10.3390/app9204474 fatcat:nmktufnimzbszavjkxv7rt5dhe

Non-Contact Respiration Monitoring and Body Movements Detection for Sleep Using Thermal Imaging

Prasara Jakkaew, Takao Onoye
2020 Sensors  
A signal processing technique was used to estimate respiration and body movements information from a sequence of thermal video.  ...  The automatic region of interest (ROI) extraction by temperature detection and breathing motion detection is based on image processing integrated to obtain the respiration signals.  ...  A motion magnification technique was proposed to magnify a baby's respiratory chest movements from a digital video camera [12] .  ... 
doi:10.3390/s20216307 pmid:33167556 fatcat:ju2p5iiborglvfbt5qkumrp64e

Real-time visual analysis of microvascular blood flow for critical care

Chao Liu, Hernando Gomez, Srinivasa Narasimhan, Artur Dubrawski, Michael R. Pinsky, Brian Zuckerbraun
2015 2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
Therefore, thus far microcirculatory videos have been analyzed manually with significant input from expert clinicians. In this paper, we present a framework that automates the analysis process.  ...  Microcirculatory monitoring plays an important role in diagnosis and treatment of critical care patients.  ...  We use the locally affine models to deal with the non-rigid motion of the tissue introduced by heartbeat and breathing.  ... 
doi:10.1109/cvpr.2015.7298834 dblp:conf/cvpr/LiuGNDPZ15 fatcat:qlx2aqkuavboneskresgg6sqiy

Detection of Cardiopulmonary Activity and Related Abnormal Events Using Microsoft Kinect Sensor

Ali Al-Naji, Javaan Chahl
2018 Sensors  
The proposed system extracts the signal from the abdominal-thoracic region where cardiopulmonary activity is most pronounced, using a real-time image sequence captured by Kinect v2 sensor.  ...  Monitoring of cardiopulmonary activity is a challenge when attempted under adverse conditions, including different sleeping postures, environmental settings, and an unclear region of interest (ROI).  ...  The magnification process was used to either magnify the video data captured by the RGB sensor in a well-lit environment or to magnify the video data captured by the IR sensor in a dark environment, since  ... 
doi:10.3390/s18030920 pmid:29558414 pmcid:PMC5876730 fatcat:l6zo7vp3rje7jcoug644vdczwa

Video Magnification under the Presence of Complex Background Motions

Long ZHANG, Xuezhi YANG
2021 IEICE transactions on information and systems  
We propose a video magnification method for magnifying subtle color and motion changes under the presence of non-meaningful background motions.  ...  compared methods. key words: video magnification, complex background motions, frequency variability (FV), Poincaré plot analysis (PPA), frequency variability filter  ...  PVM focuses on using local phase variations rather than intensity changes to represent local motions.  ... 
doi:10.1587/transinf.2020edl8134 fatcat:dscktzhx7nci7ivll3dkq4rruq

Camera Measurement of Physiological Vital Signs [article]

Daniel McDuff
2021 arXiv   pre-print
The need for remote tools for healthcare monitoring has never been more apparent.  ...  Camera measurement of vital signs leverages imaging devices to compute physiological changes by analyzing images of the human body.  ...  Computer graphics can provide a way to create high fidelity videos of the human body with augmented motions and skin subsurface scattering that simulate cardiac and respiratory processes [88] .  ... 
arXiv:2111.11547v1 fatcat:47l2buzxg5ht5lhrqsuszjha6a

Improving Accuracy of Contactless Respiratory Rate Estimation by Enhancing Thermal Sequences with Deep Neural Networks

Kwasniewska, Ruminski, Szankin
2019 Applied Sciences  
In this paper, we furtherextend studies on contactless Respiratory Rate (RR) estimation from extremely low resolution thermalimagery by enhancing acquired sequences using Deep Neural Networks (DNN).  ...  Estimation of vital signs using image processing techniques have already been proved tohave a potential for supporting remote medical diagnostics and replacing traditional measurementsthat usually require  ...  The DL model proposed by us is compared against the Eulerian Video Magnification (EVM) algorithm [22] .  ... 
doi:10.3390/app9204405 fatcat:n325h4mqwbasbaor2h2mjylnbu

Noncontact Sensing of Contagion

Fatema-Tuz-Zohra Khanam, Loris A. Chahl, Jaswant S. Chahl, Ali Al-Naji, Asanka G. Perera, Danyi Wang, Y. H. Lee, Titilayo T. Ogunwa, Samuel Teague, Tran Xuan Bach Nguyen, Timothy D. McIntyre, Simon P. Pegoli (+4 others)
2021 Journal of Imaging  
Vital signs including heart rate and respiratory rate are affected by the condition. Cough, fatigue, and visible infections are also reported as common symptoms.  ...  Vital signs associated with respiratory distress and fever, coughing, and visible infections have been reported. Fever screening by temperature monitoring is currently popular.  ...  [145] first used a hovering UAV, as shown in Figure 16 , to remotely monitor heart and respiratory rate based on improved video magnification technique.  ... 
doi:10.3390/jimaging7020028 pmid:34460627 pmcid:PMC8321279 fatcat:jph3fberxjd7tndfsfw4zoy4lu

Direct observation of the budding and fusion of an enveloped virus by video microscopy of viable cells

T. Bachi
1988 Journal of Cell Biology  
Video-enhanced microscopy and digital image processing were used to observe the assembly, budding, and fusion of Respiratory Syncytial virus.  ...  The rapidity of viral assembly and its synchronous occurrence (leading to the production of sev-eral viral particles per minute from the same surface domain) suggests a directed process of recruitment  ...  Part of the video equipment was purchased with a support from the Hartmann-Miiller Foundation, Ziirich. Received for publication 21 October 1987, and in revised form 5 July 1988.  ... 
doi:10.1083/jcb.107.5.1689 pmid:3182934 pmcid:PMC2115323 fatcat:s35jpws4brbp3drcdiccxgbfe4
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