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.
Example ultrasound slices along instrument shaft when instrument is not in contact with target (A) and when it is in contact with target (B). The corresponding intensity-based objective functions are shown in (C) and (D), with the EKF-predicted target location shown in (D). The x axis is parallel to instrument axis (white dash).
