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.
Comparison between the trees dimension measurements; trees height (a) and trees volume (b), derived by using the two sensing methods; the UAV aerial-based system and the UGV-ZED depth camera ground-based system; the colored areas show the lower and upper confidence (95%) limits.
