Decent tracking in 3d space —
Either requires good tracking of each object
HTC Trackers ] where you have a pretty good
idea of the absolute position , or lots and lots
or cameras around the room.
Optitrack is the latter and works well.
Though we are talking about 10 - 20K systems
and dedicated rooms with cameras all over the
walls. The HTC trackers are cheaper and more
accurate.
If you are really serious about dozens
of objects then look into Triad Semiconductor
Part TS 3633 ] for building your own trackable
receiver interfaces. These are what get used
inside the HTC Vive hardware :
> Triad TS3633-CM1 Module
https://www.triadsemi.com/product/ts3633-cm1/ ]
All best ,
— Chuan