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.
Illustration of the continuation scheme used to minimize the convergence of the algorithm to local minimum. We start with σ = 25, when the distance metric is convex for most patch pairs in the image. We then gradually reduce the value of σ by a step size of 5 until it achieves the desired value σ = 1. Note that the distance metrics with small values of σ are non-convex.
