Terrain import is now a part of the blender-osm addon. Get it for free at https://gumroad.com/l/blender-osm. The source code is located here.
The addon for Blender imports real world terrain data with global coverage and the resolution about 30 meter in the SRTM format (.hgt).
Take look at the addon blender-osm. It provides one click download and import of OpenStreetMap and terrain for Blender. Buildings from OpenStreetMap are placed on the terrain automatically.
- Documentation
- blenderartists.org: thread
- blender-osm: OpenStreetMap and terrain for Blender
- twitter: @prokitektura
If you find the addons useful, please consider making a donation: