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.
Drusen segmentation in central and middle subfields. The background-leveled drusen image from Fig 2 is shown in higher magnification. Drusen are identified by single threshold operations, respectively, in the central subfield (A), middle annular subfield (B), and combined regions (C), with the bit-mapped version (D) of segmentation (C) shown as being suitable for quantitative morphometric analysis.
