Art DTRACK3 User Manual page 145

Figure 9.40: Fingertracking Administration - Hand Geometry Calibration progress bar
A progress bar shows the status of the calibration (see figure 9.40 on page 145).
If calibration step 1 fails, please check if modulated flash is activated
for at least one camera and if the correct handedness and thimble set
are selected.
It is important that the hand is held inside the tracking volume and all
markers are visible to at least two cameras when starting the calibra-
tion process.
After the first step has been completed a new countdown for step 2 is started.
During the second phase (calibration step 2)
keep the fingers stretched out (see right picture in dialog, refer to figure 9.39 on
page 144)
keep the thumb spread away from the hand
keep the other fingers close together
gently move all of your fingers up and down at the same time until the calibration
process is finished. The thumb is still spread away from the hand and should not be
moved during this phase.
do not bend or cross your fingers
Try to achieve an angle of approximately 60 between up and down po-
sition of the fingers.
If the calibration terminates with an error message, double-check the
calibration procedure by clicking the button Help.
If calibration step 2 fails, please take care not to bend your fingers, and
not to move the thumb too much
After data collection a process is started which calculates the finger sizes from the move-
ment of the finger tips (see figure 9.41 on page 146. The length of the thumb is derived
by the finger lengths.
9.8 Fingertracking
145