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.
Summary preference functions for the two factors resulting from the Q-mode principal component analysis for the grayscale (A), thresholded (B), and edges only images (C). Percentages in each panel indicate the proportion of variance explained by each factor.
