Optitrack

The Optitrack system captures the position of the freeflyers.

Table of Content:

• Optitrack
  • Recalibrating Optitrack

Recalibrating Optritrack

This guide provides a step by step description of the process required to recalibrate the Optritrack system.

See this site as a reference.

1. Remove all objects with reflectors from the table and make sure none are visible from the control center.
2. Reset the application settings (Edit > Reset Application Settings).
   
   
3. Then go to “Application Settings” pane and set the “Continuous Calibration” setting as “Continuous”.
   
   
   
   
4. Set a small FPS for calibration, EXP 250, THR 200, LED 15.
   
   
5. In the Camera Calibration Pane, set the OptiWand in the Calibration Options as Micron Series, and the Wand Length(mm) is set as 249.864 for our calibration device.
   
   
   
   
6. Click the button “Clear Mask”, then click the button “Mask Visible”.
   
   
7. Click the button “Start Wanding” and start wanding until all cameras show a green calibration status on their rim using the OptiWand.
8. Calculate the calibration quality when sufficient data is obtained.
9. Set the vertical offset of the calibration square (CS-200) for our motion capture system to 19 mm. Press the button “Set Ground Pane”.
   
   
   
   Visit this site for further information on calibration squares.
   
10. In new calibration: View – Data Streaming Pane
    • Activate “Broadcast Frame Data”,
    • Activate “Broadcast VRPN Data”
    • Set the Up axis to “Z up”
11. Redefine rigid bodies:
    • mark the reflectors at the upper 4 corners of an object
    • select: right click - rigid body - create from selected markers
    • rename the object: bsp.: vrpn/hannibal
    • add all remaining reflectors of the object to the rigid body by marking them together with the already defined ones