Model for non-contact blood pressure measurement based on the facial feature amount of amplitude and phase analysis

Abstract

To monitor the daily blood pressure, developing a non-contact method for measuring blood pressure is necessary. In a previous study, we proposed a novel method that described the vascular structure of an entire face as an electric circuit based on amplitude and phase analyses using visible and thermal images of the face. However, the model developed by that method considered only the separation of blood. In the present study, a model is constructed that considered not only the separation but also the position of blood using amplitude and phase analyses. As a result, the estimated accuracy is improved by considering the position of the blood.