Figure 8 .
(a) Input Fundus Image, (b) filling gradient (filled-unfilled), (c) Gradient thresholded image, (d) removing blood vessel artifacts.
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.