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.
Signal profile of the middle image line: (a) profile of the original image. (b) Profile of the prefinal image. (c) Profiles of the top-hat filtered image. (d) Profile of the bottom-hat filtered image. (e) Profile of the final enhanced image
