training may soon
more realistic through the use
by researchers at the University
of Biomedical Engineering (IMBE).
Many safety and cost benefits are obtained by
aircraft pilots under
simulated conditions, but to be effective
the simulation must
be convicingly realistic. At present, th e
use large domes and gimballed projectors, or
an array of video screens,
to display computer-generated images.
But these installations
are very expensive and image resolution
is low. Further,
it would take an enormous amount of addi to
improve image quality
significantly throughout the whole viewed
However, based on the visual properties
of the eye,
realism can be obtained
by providing a high-resolution ‘area of
interest’ insert within
a large, low-resolution field of view.
fixation is, it mage
The technology to make this possible was developed by
research team headed
CAE Electronics Ltd.
of Montreal with financial support from the
Natural Sciences and
Engineering Research Council of Canada.
Their eye-tracker can record and analyze accurately up to
500 eye positions per
second. The system works by means
capturing and processing
the reflections of a low-level beam o f
light shone onto the eye.
Multi-element arrays capture the image of the
digitize the information,
by a fast, dedicated
the ligh tre of the pupil reveals
Developments by the IBME team have significantly increased
the speed of signal
processing in addition to enhancing accuracy
position estimates. Eizenman believes that
improvements make our
eye-tracker very effective in monitoring
the large G-force environment
where the pilot tends to make
movements because of contraints which exist
movements of his head”.
In a new generation of aircraft simulators,
development by CAE
Electronics Ltd. of Montreal, a head tracker
which tells the direction
of the pilot’s head is mounted on top
of the helmet.
The eye tracker is mounted on the front of the
helmet, and is ll exactly
where the pilot’s eye is fixating.
Frecker said that “successful integration
of our eye
tracker into the novel
helmet-mounted CAE flight simulator would
result in a new
generation of simulators that would likely
replace the current
large domes and cumbersome video display
Initial tests of the integrated system will be carried out
in collaboration with
CAE Electronics at Williams Air Force Base
in Arizona later this