I have a image with a known projection - say an aerial photo. I also have a raster surface grid with the same projection - say a DEM. Both are in the same projection. Both have the same extent.
How do I "drape" the image on top of the surface using open source software?
The end result would be an oblique-like image that you typically see when you use google earth (or similar 3D earth-observation software).
This question does what I want to do (using Esri), but get better results - What can be used to drape an High res Image over a DEM and get high quality results? And this is a similar (but different) question for QGIS -How to drape a simple jpeg image over dem of some area?
There doesn't seem to be a way to do it in QGIS. I think GRASS should be able to do it, but I haven't figured out a way by looking around or googling. ParaView seems like a possibility, but overly complicated.