Before revision: Remote photoplethysmography (rPPG) is a known family of techniques for monitoring blood volume changes from a camera. It may be especially useful for widespread contact-less health monitoring when used to analyze face video from consumer-grade visible-light cameras.
After revision: Remote photoplethysmography (rPPG) is a known family of techniques for monitoring blood volume changes , may be especially useful for widespread contact-less health monitoring when used to analyze face video from consumer-grade visible-light cameras.