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.
Results of detection of maxima and minima for PPGi signal, using a 660 nm source of light. The red curve represents the adaptive quadratic curve generated by the proposed method. The blue points represent the maxima of the quadratic curve. The red points represent the maxima of the PPGi signal. The green points represent the minima in the PPGi signal. All of these points were determined using the proposed PPGi method.
