Art ARTTRACK Installation Manual page 45

Figure 5.3: Origin of the room coordinate system (default)
calibration is always the first step. Without it, body calibration and tracking will not be
possible.
Example: If a camera with 3.5mm lenses (standard for
TRACKPACK/E
rations of the optical rays that are as high as 5 millimetres in 3 metres
distance from the camera. This will result in unacceptable errors in the
measurement results, hence,
camera and it will not contribute to tracking.
In summary room calibration has to be carried out
after the first system setup,
when the default orientation and position of the
system is not adequate for your application
after any changes of IR camera positions (
after any changes to the number of cameras,
before a body calibration (when system has been setup initially),
whenever any uncertainty regarding the mechanical stability or the environmental
conditions of the setup occurs.
) is rotated by one tenth of a degree it will cause aber-
DTRACK3
5.1 Setting up the cameras
ARTTRACK5
will exclude data from such a
SMARTTRACK2/3/M
Room re-calibration),
or
coordinate
45