Creating large mesh from DEM

Forgive me if I use wrong terms here. I am relatively new to all of this.

For starters, I have a very large DEM file ( 1.6 GB ) in bigtiff format. I want to create a mesh from this in blender. I am using GDAL to reduce the extent of the file to work with and test. Ultimately i want to be able to build a mesh with the entire file.

From my own research i came across this thread here:


specifically the post by Rorkimaru, the 17th post.

This seems like it may be what i need to do. However, I have no clue what-so-ever how to implement this grouping. I can easily “tile” my DEM into very small pieces. I use the BlenderGIS add-on to load the DEM into blender and triangulate the mesh.

What i need help with is how to group these “tiles” and link to the main .blend. Right now I am not trying to do LOD as this is not for a game. I am rendering a “movie flyover” the terrain.

Thank you in advance. Please let me know if you need further clarification.

i do this all the time

there are a few different ways , and they depend in the starting image

if it is square and NOT georeferenced like this
– Minor body Ceres
https://thumbs2.imgbox.com/e9/ba/y4BGyozj_t.png

or a simple cylindrical projection
– Mars
https://thumbs2.imgbox.com/0c/f6/DxgWeVeB_t.png

or a georeferenced and mapped image like this
– Charon - moon of Pluto
https://thumbs2.imgbox.com/86/8e/0WrYT0ii_t.png

can you post a 8 bit copy of this 1.6 gig DEM

  • reduced in size of coerce