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.
Schematics illustrating the calculation of morphological features: (a) lesion boundary (red) and circle enclosing it (green) used to calculate area overlap ratio; (b) vectors used for calculation of lesion smoothness. 
is the lesion centroid, and 
are consecutive points on the lesion boundary.
