Filtering Of 6Dof Tracking Data - Detailed Description Of The Presets - Art ARTTRACK1 System User Manual

Presets optical tracking
custom
default
Flystick
HMD-1
medium prediction
reference target
smoothing (delayed)
Presets hybrid tracking
hybrid custom
hybrid default
hybrid HMD medium prediction
Table 8.12: Filtering of 6DOF tracking data - Detailed description of the presets
It is also possible to customize the tracking behaviour to the requirements of the applica-
tion using the following tunable settings:
Settings
Strength
Prediction
Mode optical
tracking
'Adaptive
Description
Customizable preset. A detailed description of the parameters
can be found in table 8.13 on page 160.
Standard filtering without prediction or smoothing.
Recommended setting for use with a Flystick (responsive filter-
ing, designed for fast to slow motions).
Recommended setting for tracking of a HMD without hybrid track-
ing (down-tuned filtering with prediction, designed for fast mo-
tions).
Filter with prediction of tracking data (less responsive filtering,
designed for slow to medium motion).
Filter with smoothing for tracking of stable reference positions
(strong non-responsive filter, designed for occasionally moving
objects).
Filter with strong smoothing and high averaging (responsive filter-
ing with high latencies, designed for recording of tracking data).
Description
Customizable preset. A detailed description can be found in table
8.13 on page 160.
Standard filtering for hybrid targets without prediction or smooth-
ing (designed for e.g. Hybrid Motion Capture).
Filter for hybrid targets with prediction of tracking data. (designed
for e.g. HMDs)
Description
Sets the strength of the filter. Low
values lead to faster reaction but
higher jitter. High values result in
smoother output but slower reac-
tion. Note: Not available for hybrid
tracking.
Predicts output for the specified
time into the future (ms) in order to
compensate tracking and rendering
latency. Note: Too high positive val-
ues can increase jitter and reduce
precision. Negative values can be
used for smoothing the output at the
cost of higher latency.
Specifies the elementary behavior
of the filter. Several options are
available:
fast' Automatically adapts to the ob-
served motion.
8.5 Menu Settings
Usage
A higher strength may be
ideal for tracking seating
bucks
A negative prediction may
be ideal for recording data
and offline analysis.
for optical tracking only
Moving targets that
change between fast and
slow motions, such as
Flysticks.
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