E T V I S I O N M A N U A L
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8.4.4
System Configuration tab
8.4.4.1
Position and angle Units
“Position Units” can be selected, from the pull down menu, as either “inches” or “centimeters". Angle
Units are always “degrees”. The data items available for recording and streaming by
ETVision
include a Vergence Angle and point of gaze expressed in a 3 dimensional coordinate system with an
origin at the scene camera. See Appendix C (section 8.3). The “vergence angle” value is reported in
degrees. The point-of-gaze X, Y, and Z coordinates are reported in the “Position Units" selected.
Use of the optional
ET3Space
feature requires entry of some information about the environment using
the selected “Postion Units”, and reports data as position coordinates also using the selected “Position
Units". (Instructions for
ET3Space
feature are in a separate manual).
8.4.4.2
Head Tracker
Separate motion tracking systems are usually used to track head motion as part of the optional
ET3Space
feature, but
ETVision
can connect to compatible motion tracking systems whether or not
ET3Space
is in use. Consult Argus Science for a list of compatible motion tracking systems.
The Configuration button, in the “Head Tracker” group box, brings up a dialog to configure
ETVision
for communication with a specific motion capture system. Instructions are in the
ET3Space
manual
and a separate manual or Tech Note associated with the particular motion capture system to be used.
Once properly connected and configured, the “Connect" button establishes communication with the
motion-tracking device. For details, see
ET3Space
manual and separate manual or Tech Note
associated with the particular motion capture system.
8.4.4.3
ET3Space
Controls and dialogs accessed from the “ET3Space” group box are used to set up and implement the
optional
ET3Space
feature. Instructions are in a separate
ET3Space
manual.
8.4.4.4
Scene Camera (Non-ET3S)
The Calibration Points Configuration dialog accessed from the “Scene Camera” group box is used in
conjunction with the “Use Pre-determined Points on Scene Image” Calibration Type (see sections 8.2
and 8.4.3). It is usually used only for special configurations in which the scene image is fixed with
respect to the
ETVision
optics frame. Consult Argus Science for details.
