Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The three principles of camera-based vital sign monitoring: a) PPGI detects slight variations of the optical properties of the skin, b) systems using MWIR/LWIR exploit temperature changes due to respiration and blood flow, and c) motion-based methods detect slight motion of the head (or other parts of the body) related to cardiac or respiratory activity.
