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.
Baker’s test template. (a) An artificial ball rotates around an axis in the anti-clockwise direction looking in a top view; and (b) the image sequence of the region of interest. ∆α represents the angle between two adjacent images. The white dash line is the benchmarking for convenient comparison.
