Figure 4.
Visible (a,c) and IR (b,d) images before (a,b) and after (c,d) coarse registration.
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.