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.
Validity of image summation for PCA. Solid lines are the average distance from local ensemble plus their standard deviation. Dashed lines are the distance of local ensemble average from “truth” (21 image ensemble). (a) shows data from eigenvector 1; (b) from eigenvector 2; and (c) from eigenvector 3.
