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.
Values of first eigenvector corresponding to each particular feature: mean (marked with diamonds); analyzed image histogram skewness (marked with circles) or analyzed image entropy (marked with asterices) at certain spatial frequency and aspect ratio
