Transcript Slide 1

Calibration of Virtual Environments
Overview
Receiver pods (2
of 4)
X-bar
Bird
In this
project
the
performance
characteristics of two motion tracking modalities
for use in a virtual environment were investigated.
Ascension Technology’s Flock of Birds is an
electromagnetic tracking system. InterSense’s IS600 uses a combination of ultrasonic, infrared, and
inertial principles. Case studies were performed
for both tracking systems to study static
distortion, temporal stability, and the effect of
metal. The requirements of the virtual reality
application would ultimately guide the choice of
the tracker modality.
Electronics unit
Calibration
stand
Standard range
transmitter
Base unit
InertiaCube
Bird
SoniDisc
Figure 1. Experimental setup
Figure 2. Tracking hardware