User's Manual

Document MV0319P.N
© Xsens Technologies B.V.
MVN User Manual
48
8.2.4 Expert Calibration: Hand Touch
It is important for the operator to determine if the hand touch is required - in general it is not necessary.
Sometimes it is difficult to get very accurate hand data, even when the N or T pose has been carried out
well. For this reason it is sometimes needed to carry out a Hand Touch calibration. Note that a good N-
pose is necessary to obtain the best results.
When performing the calibration, take care of the
following:
Place the palms of the hands together.
An example of the calibration movement is shown
in the 3D view plane.
Move the hands around slowly while keeping the
hands together
Keep elbows in the same position (10 seconds).
Imitate the 3D character window or perform a
different movement, e.g., making small circles in
all directions.
Figure 37: Hand touch calibration pose
8.2.5 Hands-off calibration
It is possible to perform a calibration without assistance. Click the ‘Hands-off calibration’ check box and
select the delay time. This is the time needed between clicking ‘Start’ and getting into position. Continue
the calibration by clicking the ‘Calibrate’ button. Following the preset time delay, the calibration recording
will automatically begin.
8.2.6 Calibration quality
MVN Studio will perform several checks to determine the quality of the calibration signals. These checks
include: a measure for standing still, the expected alignments of the MT’s on the pelvis and hands, the
homogeneity of the magnetic field, therefore the ability to measure safely in this environment.