Fig. 2.
Transformation of spectra s1 and s2 into feature space by taking neighborhoods around (x1,y1) and (x2,y2) into account; the mapped positions (x1,y1) and (x2,y2) are clustered in feature space.
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.