LPVR-CAD: Location-based Multiple Users' AR/VR Tracking Solution for Immersive 3D Visualization


LPVR-CAD is a location-based VR tracking system. Consumer virtual reality head mounted display (HMD) systems such as the HTC VIVE or Valve Index support so-called room scale tracking. These systems are able to track head and controller motion of a user not only in a sitting or other stationary position, but support free, room-wide motions.

The volume of this room scale tracking is limited to the capabilities of the specific system, usually covering around 5m x 5m x 3m. Whereas for single user games or applications this space may be sufficient, especially multi-user, location-based VR applications such as arcade-style game setups or enterprise applications require larger tracking volumes.

Optical tracking systems such as ART offer tracking volumes of more than 15m x 15m x 3m. Although the positioning accuracy of optical tracking systems are in the sub-millimeter range, especially orientation measurement is often not sufficient to provide an immersive experience to the user. Image processing and signal routing may introduce further latencies.

Our location-based AR/VR tracking system solves this problem by combining optical tracking information with inertial measurement data using a special predictive algorithm based on a head motion model.

Supported HMDs

  • LPVIZ (LP-Research AR headset)
  • HTC VIVE / VIVE Pro / VIVE Pro 2
  • Varjo VR-1 / VR-2 / XR-1 / XR-3 / XR-4
  • Valve Index
  • Pimax
  • Customization to support further devices (Oculus Quest etc.) on request

LPVR-CAD use case – Hyundai Motor Company

LPVR-CAD use case – Audi Holodeck 

LPVR-CAD use case – Bandai Namco VR Zone 

LPVR-CAD use case – Sandbox VR Mixed Reality 


Product name LPVR-CAD
Compatible HMDs see above
Compatible optical tracking systems ART, Optitrack, VICON, VRPN-based tracking solutions
Compatible software Unity, Unreal, Autodesk VRED, all SteamVR-compatible applications
Controller support all SteamVR controllers
Position accuracy typically sub-mm
Rotation accuracy 0.2°
Tracking latency Zero latency (using head motion prediction)
Tracking space Unlimited (depending on optical tracking setup)
Driver software OpenVR driver, Varjo Base driver
Update rate 1000Hz
Operating system Windows 10 and newer
System components HMD marker holder, hand controller marker holder, accessory cables and screws
Licensing License dongle


Product Package contents Price
LPVR-CAD 1 x Security dongle
1 x HMD marker holder
1 x Maintenance contract 1year
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