US Patent 11640055 Locating objects in world coordinate system

A technique includes constructing a WCS (world coordinate system) as a three-dimensional, Cartesian coordinate system based at least in part on (i) a plurality of anchor points detected in a physical space around a device and (ii) a secondary source of information that assists in localizing objects in the physical space. The technique further includes providing the WCS to the device as a coordinate system in which to place holograms.