OptiTrack at GDC final week confirmed off an indication of their enterprise/business monitoring know-how which is able to precisely monitoring lots of of objects concurrently in real-time. For these constructing out of dwelling functions with VR, OptiTrack now has accessible a set of add-ons and a collection of instruments for monitoring of Rift and Vive headsets, our bodies, and props, together with a SteamVR plugin.
On the firm’s GDC sales space final week, OptiTrack had certainly one of their modular monitoring volumes arrange with 25 cameras monitoring 140 real-world objects concurrently. A lot of the objects have been custom-made large Jenga blocks which have been (every individually tracked), together with VR headsets, gloves, and extra.
Carrying a wi-fi HTC Vive Professional (with an OptiTrack monitoring add-on), I used to be in a position to play a whole recreation of Jenga purely by counting on the mediated data coming by means of the headset.
The demo confirmed the potential of the OptiTrack system to precisely monitor objects with solely a single lively marker seen—because of an array of cameras which might precisely triangulate, plus an on-board IMU for rotation and acceleration—resulting in robustness towards occlusion by brute-forcing the issue with extremely redundant digital camera protection.
The end result was that on the sales space, even with a number of attendees mulling about and taking part in interactively with the Jenga blocks (which have been largely occluded besides on the edges, because of being stacked in towers), whereas sustaining high-performance monitoring.
To show the monitoring efficiency, the OptiTrack crew additionally arrange the blocks as dominoes to knock them down. Whereas it appears to be like outwardly like a bodily simulation rendered within the pc, there’s truly no physics calculations occurring in any respect, simply uncooked movement monitoring data of how the blocks are individually transferring in the true world.
With the flexibility to trace lots of of objects without delay, in a VR context one may think a complete ‘set’ of props in a single room—chairs, desks, balls, weapons, swords, and different objects—all of which may very well be tracked along with a number of customers in VR headsets which might cooperatively use the objects as a part of an leisure expertise. OptiTrack says they haven’t discovered a sensible restrict on the variety of tracked objects their system can help, even after experimenting with greater than 300 at a time.
In the previous few years OptiTrack has been constructing out its software program and hardware to help out of dwelling XR functions. The corporate now sells ‘snap-on’ faceplates for each the Rift and Vive, which increase the headsets with the markers wanted for large-scale OptiTrack monitoring, in addition to ‘pucks’ (self-contained trackers for attaching to arbitrary objects), and an ‘lively tag’ which can be utilized to create custom-made tracked objects (just like the Jenga blocks proven at GDC).
OptiTrack additionally says they’ve constructed an OpenVR plugin which permits their monitoring to transparently exchange SteamVR Monitoring, enabling compatibility between OptiTrack monitoring and SteamVR content material which is helpful for builders constructing out of dwelling VR content material for Vive headsets.
A minimal of three OptiTrack cameras are required for monitoring, the corporate says, with arbitrary numbers of further cameras in a position to be added for bigger monitoring volumes and robustness towards occlusion. Whereas the hardware is little question costly (with single cameras beginning at $1,500), the corporate’s monitoring platform is changing into an more and more complete and scalable answer for large-scale, excessive precision XR monitoring.