Noise Reduction Technique for Single-Color Video Plethysmography Using Singular Spectrum Analysis
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Journal of Biomedical and Health Informatics"
DOI: 10.1109/jbhi.2019.2949883
Abstract: Recently, a contactless method for measuring a biological signal using a video camera has garnered attention. Especially, video plethysmography, a technique for obtaining a pulse wave from a video, is useful for managing the health… read more here.
Keywords: video; single color; video plethysmography; color video ... See more keywords
Full-color video and still imaging using two flat lenses.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.026866
Abstract: At least two lenses are required in imaging systems to adjust focus and magnification and to match the acceptance properties of the image sensor. Here, we demonstrate the tandem use of two millimeter-scale planar diffractive… read more here.
Keywords: full color; color video; video still; imaging using ... See more keywords
Heart rate estimation from color video sequences with high SNR.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.476117
Abstract: We propose an absorption intensity heartbeat modulation-averaged shifted histogram (AIHM-ASH) method for estimating human heart rate (HR) using color videos of lip image sequences. When heartbeat occurs, AIHM is generated. Based on the AIHM, HR… read more here.
Keywords: color; color video; heart rate; estimation ... See more keywords
A multi-color video-ophthalmoscopes allows to measure the spectral distribution of light absorption of blood in the human retina
Sign Up to like & getrecommendations! Published in 2023 at "Frontiers in Medicine"
DOI: 10.3389/fmed.2023.1125154
Abstract: Based on our previously developed mono-color video-ophthalmoscope a multi-color video-ophthalmoscope was developed. Using narrow band transmission filters, this instrument allows to measure the pulsatile cardiac cycle induced blood volume changes in the human retina for… read more here.
Keywords: color video; distribution; blood; video ... See more keywords