
Terms and definitions
term
definition
3DOF
three degrees of freedom (i.e. only position)
6DOF
six degrees of freedom (i.e. position and orientation)
5DOF
five degrees of freedom (i.e. one degree less in orientation)
ART
Controller
calculates tracking data and generates the data output stream
(compatible to
ARTTRACK2
,
ARTTRACK3
,
ARTTRACK5
,
ARTTRACK5/C
,
TRACKPACK/E
)
ARTTRACK
Controller
(discontin-
ued)
calculates tracking data and generates the data output stream
(compatible to
ARTTRACK1
,
ARTTRACK2
,
ARTTRACK3
)
ARTTRACK
2 & 3 (discontinued)
infrared camera
ARTTRACK5
infrared camera
ARTTRACK5/C
infrared camera dedicated for multi-sided projections
body calibration
teach the system the geometry of a rigid body
body, rigid body
rigid arrangement of multiple markers intended for 6DOF track-
ing (see also "target")
calibration angle (410mm or 710mm)
belongs to the room calibration set and defines origin and orien-
tation of the room coordinate system
ceiling suspension
equipment to mount an infrared camera to the ceiling
DTrack2
backend software
software running on the controller doing all necessary calcula-
tions
frontend software
graphical user interface running on customer’s computer to con-
trol the controller
Field of View (FoV)
is the area of interest captured on the camera’s image
finger thimble
a fixture for the finger tip to hold the active marker(s)
Fingertracking
tracks the orientation of the hand and the position of the fingers
Flystick
wireless interaction device for virtual reality (VR) applications
hand geometry
describes the dimensions of your hand and fingers
hybrid tracking
sensor fusion of optical and inertial data into one consolidated
output
inertial sensor
an inertial measurement unit simultaneously measures 9 phys-
ical properties, namely angular rates, linear accelerations (un-
used) and magnetic field components (unused) along all 3 axes.
This is achieved using solid state gyroscopes for measurement
of roll, pitch and yaw and optical tracking for drift correction.
infrared optical tracking
position measurement of bodies (subjects or objects) based
upon infrared light and optical measurement procedures
license code (license key)
software key to unlock certain capabilities of the tracking system
marker
object either made of retro reflective material or LED for position
tracking (3DOF)
Measurement Tool
a pointing device which allows to measure the position of the
tool’s tip with high accuracy
measurement volume
defines the volume where optical tracking is possible
modulated flash
infrared signal which is used for wireless synchronization
motion capture
track movements of a human body
mutual blinding
one camera sees disturbing reflections caused by the infrared
flashes of another one
prediction
predicts output for the specified time in the future to compensate
tracking and rendering latency
room calibration
teach the system the position of each camera and define origin
and orientation of the room coordinate system
room calibration set
consists of angle and wand
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