Visualization of terrain(height map)

I want to create an extension that gets digital elevation model(DEM) data and creates terrain(height map) in omniverse.

DEM is a matrice of floats which represents average or min-max elevation of an area.

Omniverse uses usd data so I need a DEM to usd-usdz converter

I have some strugles on usd format.
Is there any shortcuts or tutorials you are aware of?
How pixer or anyone creates huge terrain in usd?