Pulse wave estimation using near-infrared image

Abstract

Research on biological information using a video image has been actively conducted in recent years. In particular, a technique to obtain pulse wave information from a video image (video plethysmography) allows us to monitor our biological condition in a non-contact manner. Pulse wave extraction using three channel (RGB) signals of a visible light video is useful to suppress noise such as body motion. On the other hand, in the case of a near-infrared video image that has a single channel signal and has a different light absorption characteristic from visible light, a new approach is needed to obtain a video plethysmography stably. In this talk, we describe the basic characteristics of video plethysmography using near-infrared light and show the result of applying our proposed method on near-infrared video images.