Fingertracking: Overview
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The Fingertracking device is an add on to the A.R.T. tracking system, which allows to track the orientation of the hand and the position of the fingers. It is wireless, works for one as well as for both hands (right:HT21, left:HT24ftm) and is available as a three or five finger version. (Download movie)
The Fingertracking device consists of
- active hand target for fixing on the back of the hand. Synchronization is provided with a modulated flash and the low voltage power is provided with a rechargeable battery,
- three or five active finger markers, each consisting of an IR LED with diffusing sphere, a fixture for the finger tip and flexible wires. These active markers are time sequentially addressed and controlled by the active hand target unit.
The output data consists of:
- position and orientation of the back of the hand,
- number of tracked fingers as well as a value to distinguish right and left hands,
- position and orientation of the outermost phalanx, given in the hand coordinate system (see below); together with a radius, position and orientation of the finger tip can be estimated,
- angles between the single phalanxes as well as their lengths; these values are estimated using tracked markers and empirical data.
Standard Accessory
The Fingertracking device is delivered with:
- 2 active hand targets (incl. 6 active finger marker sets),
- 4 rechargeable batteries,
- 2 charging stations and 2 power supplies,
- software package:
- Fingertracking modul for DTrack,
- A.R.T. Viewer,
- documentation.
