20.500.12556/DiRROS-16729 Feasibility of remote blood pressure estimation via narrow-band multi-wavelength pulse transit time Contact-free sensing gained much traction in the past decade. While remote monitoring of some parameters (heart rate) is approaching clinical levels of precision, others remain challenging (blood pressure). We investigated the feasibility of estimating blood pressure (BP) via pulse transit time (PTT) in a novel remote single-site manner, using a modified RGB camera. A narrow-band triple band-pass filter allowed us to measure the PTT between different skin layers, harvesting information from green and near-infrared wavelengths. The filter minimizes the inter-channel influence and band overlap, however some overlap remains within the filter bands. We further resolve this using a color-channel model and a novel channel-separation method. Using the proposed setup and algorithm, we obtained multi-wavelength (MW) PTTs in an experiment inducing BP changes to 9 subjects. The results showed good absolute Pearson’s correlation coefficient between both MW PTT and systolic BP (R = 0.61, p = 0.08) as well as diastolic BP (R = 0.54, p = 0.05), pointing to feasibility of the proposed novel remote MW BP estimation via PTT. This was further confirmed in a leave-one-subject-out experiment, where a simple Random Forest regression model achieved mean absolute errors of 3.59 and 2.63 mmHg for systolic and diastolic BP respectively. spremenjene kamere RGB kanali zbiranje podatki krvni tlak meritve true false true Association for Computing Machinery Združene države Amerike Angleški jezik Slovenski jezik © 2023 Copyright held by the owner/author(s). Neznano 2023-07-27 10:16:36 2023-07-27 10:16:37 2023-07-28 03:38:37 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Opis vira z dne 26. 7. 2023; str. 1-20 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-01-01 63:004 1550-4867 doi.org/10.1145/3597302 159807235 https://dl.acm.org/doi/10.1145/3597302 1 24f22f5a-2c45-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22727 3597302.pdf 3597302.pdf 1 15B73BDBD853A3D18930CE55FD3AA370 975285cbc07e629898d0b03a58a8494d0021a92066231170b97da3cf24cd91f9 bcf11693-2c47-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22729 Institut Jožef Stefan 0 0 0