8 DTrack2 frontend software
in order to achieve a clear arrangement. Move the slider ’cameras per tab’ to the left to
decrease the amount of cameras. Tabs containing the remaining cameras will be added
below the Monitor 2DOF display.
The special tab ’most active cameras’ contains only those cameras which see the markers
/ targets most of the time.
Example: Consider a four camera system with cameras c01 through c04 where you have
set the number of ’cameras per tab’ to two. Now if you move a target in front of cameras
c02 and c03 most of the time, these two cameras will then be shown in the ’most active
cameras’ tab.
Adding/removing cameras It is possible to add or remove cameras without restarting
the ART Controller. Please refer to chapter 8.4.4 on page 145 how to dynamically analyse
your system for changes in configuration.
When cameras are added to an already calibrated tracking system these cameras will not
contribute for calculation and measurement until you perform a room recalibration (see
chapter 8.6.3.3 on page 170). Therefore as as reminder the Monitor 2DOF display of the
corresponding cameras will show the message ’(re-)calibration required!’ in red color.
On the contrary the ART Controller will detect all cameras that have been removed from
an already calibrated tracking system (e.g., due to a disconnected cable) and mark them
as missing until a room (re-)calibration has been performed. The Monitor 2DOF display
of the corresponding cameras will be disabled (crossed out) and in case of larger systems
their corresponding displays will be moved to a new camera tab.
Z
DTrack2 is able to operate when cameras have been added or removed;
for best performance it is highly recommended to perform a recalibra-
tion
Marker display Each marker is either displayed as a circle or as a cross. This indicates
the projected size of the marker on the camera sensor and depends strongly on the
distance to the camera. A simple color code represents the quality (i.e. circularity) of the
markers.
green markers ... very good tracking quality
yellow markers ... good tracking quality
red markers ... bad circularity, unreasonable size of marker and / or low intensity;
may result in poor tracking quality
circles ... big marker (e.g. close to camera)
cross ... small marker
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