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.
(a) Type I evaluation of each texture method without extra speckle noise and with added speckle noise with its corresponding zero mean and variance at 0.02, 0.04, 0.08 and 0.16 at 20× magnification under focal plane with even illumination; (b) Type II evaluation of each texture method without extra speckle noise and with added speckle noise with its corresponding zero mean and variance at 0.02, 0.04, 0.08 and 0.16 at 20× magnification under focal plane with even illumination
