I'm trying to extract building footprints from GEOTIFF raster images. I have raster Orthophotos (Aerial imagery), Digital Terrain Model (DTM/DEM) and a Digital Surface model (DSM), but I do not have the building footprints.
My end goal is to use the DEM + DSM to extract the height of the buildings and extrude the building footprint to 3D models.
I found this article: https://smartcarto.com/gis/detect-buildings-in-satellite-imagery-using-machine-learning-fme-vs-arcgis-pro/, but it doesn't really go into detail, and since I also have DEM and DSM, not just orthophotos I thought I migh thave other possibilties. I've extracted building footprints from Point Cloud date before, but this time I only have acess to Rasters.
Is this possible in FME? Is there any tutorials?
Thanks in advance.