4 March 2016 Non-contact measurement of pulse wave velocity using RGB cameras
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Abstract
Non-contact measurement of pulse wave velocity (PWV) using red, green, and blue (RGB) digital color images is proposed. Generally, PWV is used as the index of arteriosclerosis. In our method, changes in blood volume are calculated based on changes in the color information, and is estimated by combining multiple regression analysis (MRA) with a Monte Carlo simulation (MCS) model of the transit of light in human skin. After two pulse waves of human skins were measured using RGB cameras, and the PWV was calculated from the difference of the pulse transit time and the distance between two measurement points. The measured forehead-finger PWV (ffPWV) was on the order of m/s and became faster as the values of vital signs raised. These results demonstrated the feasibility of this method.
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Kazuya Nakano, Yuta Aoki, Ryota Satoh, Akira Hoshi, Hiroyuki Suzuki, Izumi Nishidate, "Non-contact measurement of pulse wave velocity using RGB cameras", Proc. SPIE 9715, Optical Diagnostics and Sensing XVI: Toward Point-of-Care Diagnostics, 971515 (4 March 2016); doi: 10.1117/12.2212417; https://doi.org/10.1117/12.2212417
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