The glTF 3D .NET Sample Code demonstrates how to access a dataset to triangulate a heightmap and export a binary model file. The 3D sample image runs in less than 500ms and produces a visual model available to open in Windows 10's 3D viewer.
Developers with their own geographic imagery will soon be able to publish it as a layer on the Google Maps API and Google Earth API. Dubbed Google Earth Builder, the service will launch in the third quarter. From the looks of the announcement here at Where 2.0 conference, Google is dipping its toe into the traditional GIS industry. The maps developers upload will be available via API, but only to enterprise customers who pay Google for geo services.
In late March, Google announced enhancements to their mapping API that gave developers programmatic access to their popular streetview feature. Now there are some very interesting streetview mashups to check-out.