Blood pressure is usually measured with a contact device called a sphygmomanometer cuff. Recently blood pressure can be easily measured with portable devices such as smart watches that take advantage of the progress of mobile technology. Even with the use of mobile devices, contact measurement is still required, which is one of the biggest limitations for monitoring. In this paper, we propose non-contact video based estimation method of pulse transit time (PTT) based on the quantitation method of hemoglobin level. The correlation between PTT measured by the proposed method and the blood pressure measurement with sphygmomanometer cuff was between -0.5792 to -0.7801, which confirms the effectiveness of the proposed method.
Munenori Fukunishi, Taku Yonezawa, Genki Okada, Kouki Kurita, Shoji Yamamoto, Norimichi Tsumura, "Non-Contact Video Based Estimation of Pulse Transit Time using Quantitation Method of Hemoglobin Level" in Proc. IS&T 24th Color and Imaging Conf. , 2016, https://doi.org/10.2352/ISSN.2169-2629.2017.32.71