3.2. Military
AR can be used to display the real battlefield scene and
augment it with annotation information [25]. Some HMD’s
were researched and built by company Liteye for military
usage. In [26] hybrid optical and inertial tracker that used
miniature MEMS (micro electro-mechanical systems) sensors
was developed for cockpit helmet tracking. In [27] it was
described how to use AR technique for planning of military
training in urban terrain. Using AR technique to display an
animated terrain, which could be used for military intervention
planning, was developed by company Arcane. The helicopter
night vision system was developed by Canada’s Institute
for Aerospace Research (NRC-IAR) using AR to expand
the operational envelope of rotor craft and enhance pilots’
ability to navigate in degraded visual conditions [28].
HMD was developed to a display that can be coupled with a
portable information system in military [29].
Extra benefits specific for military users may be training
in large-scale combat scenarios and simulating real-time enemy
action, as in the Battlefield Augmented Reality System
Applied Computational Science ISBN: 978-960-474-368-1 207(BARS) by Julier et al. [30]. The BARS system also provides
tools to author the environment with new 3D information that
other system users see in turn[31].