Walkfinder studio-target

The studio-target with 5 aktive-markers is a precision measuring device.
The relative position of the 5 markers  is determined accurately and stored in the WF-software. 
The zero-position of the target is determined by 2 refence-pins
In zero-position all WF-cameras must see the target
The target is connected via flash cable to one of the position-electronics

Function of the Studio-Target:

Studio-calibration in conjunction with the calibration-rod
Studio-camera-calibration in conjunction with the camera-target

All calibration processes do not need any additional measurement tools or other accessories. Precision and accuracy of calibration is determined only by the precision-targets and software.

Studio-calibration-process:

• the studio-target is positioned in zero-position on studio-floor (reference pins)
• All WF-cameras to see the studio-target in zero-position
• The studio-target and calibration-rod is connected to one position-electronics
• The host or laptop is in studio-calibration-mode and the calibration process is started
• The calibration-rod is moved close to the studio-target for appr. 50sec. (turns in all directions and cover app. 15m²
• The host has stored around 10.000 to 30.000 data-packs at a rate of 50/60Hz
• After a few seconds the results are avalable and will be stored
• Time requirement: appr. 5 Minutes 
• Result: the studio-dimensions in X-Y-Z and the P-T-R-direction are measured and stored

 A re-calibration is neccessary only if conditions in the studio have changed (e.g.: position of a WF-camera) 

Studio-Camera- resp. CCD-Chip-Calibration-process: 

• The studio-target is mounted to the studio-camera replacing the lens (bajonet-interface)
• The camera-target is fixed at the studio-camera by using the adequate adaptor
• Both targets are connected to the specific position-elektronics
• The studio-camera is positioned close to the zero point of the studio
• The host/laptop is in mode CCD-Chip-calibration and the process is initiated
• After 5 sec the results are available
• Each camera-target is assigned to a studio-camera by its different geometrie
• The position of the CCD-Chip realative to the camera-target is determined in X-Y-Z-P-T-R measures and will be stored

A re-calibration is recommended only ones a week

Studio-Target 

• Body: L-shape reference-angle equipped with 5 active marker
• 2 reference-pin for accurate and repeatable positioning on studio-floor
• Lens-bajonet-interface for repeatable mounting at studio-camera

Walkfinder Aktive-Marker