E T V I S I O N M A N U A L
52
verg_gaze_coord
– X, Y, and Z coordinates for the computed point of gaze expressed in the scene
camera coordinate frame. The scene camera coordinate frame has its origin at the scene camera lens
aperture; with an x axis pointing along the camera optical axis; a y axis pointing to the subject’s
right, parallel to the horizontal camera pixel rows; and a z axis pointing down, parallel to the camera
pixel columns. The coordinate values correspond to real distance values with units of either inches
or centimeters depending on the "Position Units" selected on the
System Control Table
, “System
Configuration" tab.
hdtrk
– X, Y, Z position values and azimuth, elevation, and roll orientation values received by the
ETVision
system from a head tracker. Values are multiplied by 100, and stored or transmitted as
signed integers. Convert to float and multiply by the scale factor 0.1 to get original values. Position
values are in units of inches or centimeters (depending on which unit system was set in
ETVision
,
“System Configuration" dialog). Angles are in degrees.
NOTE:
other data items are available only when using the optional
ET3Space
feature and are
described in a separate
ET3Space
manual.
