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.
The process of cropping one drusen in the image. (A) Drusen image: one single spectral image with 256 × 512 pixels of resolution. The irregular outline in red encloses the cropping area. (B) ROI drusen image: all the pixels values except for the cropping area were converted to zero. The image resolution remains the same.
