Full body set-up and calibration (Polygon)
MANUS Core has a full body solve, this guide delves in to how to set it up and use it.
Requirements
A minimum of six trackers are required to enable the full body solve. These can be from any supported tracking system.
| Tracker Type | Required | Description |
|---|---|---|
| Head | Mounted on the head, can also be a tracked HMD | |
| Left arm | Mounted on the left upper arm | |
| Left hand | Mounted on the left hand or MANUS glove device | |
| Right arm | Mounted on the right upper arm | |
| Right hand | Mounted on the right hand or MANUS glove device | |
| Hip | Mounted on the front or back of the hips | |
| Left foot | Mounted on the top of the left foot | |
| Right foot | Mounted on the top of the right foot |
Setup
Below's setup instructions will use MANUS Pro Trackers and the MANUS strap set as an example. Instructions will apply for other systems.
Tracking system
Make sure to you have a compatible tracking system setup and working and the required amount of trackers for full body tracking.
Strap Set
Put on a strap set compatible with SteamVR trackers.
This can be:
- Our own strap set and Manus Pro Trackers.
- A generic strap set with adapters for Manus Steam VR Pro Trackers.
- A generic strap set compatible with Steam VR.
Placing the Trackers
Secure one tracker on your head and one on your waist. One on each foot and one on each hand. If you are not wearing a VR headset you also need to place a strap and tracker on your head. For higher fidelity you can place trackers on your upper arms (facing outwards) as well.
Assign the Trackers
In the profile settings menu for the intended user, assign the trackers to their respective bodyparts. You can use the scene view to identify which is which by color and assign them accordingly.
Calibration
Preperation
In the profile settings menu the calibration process can be started by pressing the calibration button.
Continue on and select the glove tracker combination you are using to skip the initial few steps. If skipping you will calibrate to find the ideal offset.
Steps
The calibration exists of a set of steps. An avatar demonstrates the calibration pose/move and the step is explained textually.
Note
The exact amount of steps varies based on how many trackers are being used and if a known device/tracker combination is used.
Grab your left wrist and bend it up and down.
Grab your left elbow and twist your hand left to right.
Grab your right wrist and bend it up and down.
Grab your right elbow and twist your hand left to right.
Put your hands together and point them forward.
Grab your left elbow and stretch your left hand forward.
Grab your left shoulder and stretch your left arm forward.
Grab your right elbow and stretch your right arm forward.
Grab your right shoulder and stretch your right arm forward.
Make a T by stretching your arms horizontally. Put your feet together and point them forward.
Place your wrists on the edge of your pelvic bone.
Put your left foot forward and twist it on its heel.
Put your right foot forward and twist it on its heel.
Place your wrists below your ears and grab the back of your head.
Rest the palm of one of your hands on top of your head while keeping your other hand next to your body.
Evaluation
After calibration the results can be visually inspected inside the scene view. The body measurements are displayed inside the profile settings of the user. These can be tweaked to improve the body solve, reset values will reset the entire calibration back to its default requiring you to recalibrate.
Next steps
Now that you have successfully setup a full body solve, what can you do with it?
- Steam it live to our plugins:
- Unreal
- Unity
- SDK
- Record for full body motion capture.
VR
When using a VR HMD as part of your full body calibration it's also possible to do the calibration in VR. Make sure to enable the Render to VR headset setting, start the calibration procedure outside of VR and transition into VR once the steps start. Here all steps can be followed along in VR.
