I would like to know what's the best method(s) to compare two DEMs without using any GUI soft like QGIS or ArcGIS.
I'd like to do it in Python or C++, with GDAL or other similar lib.
Does calculating the RMSE (Root mean square error/deviation) is useful?
How to proceed to subtract DEM1 from DEM2? And I should find a flat result, right? Is their other ways?
Because reading for each coordinate the elevation
z and compare it with the other DEM is a bit heavy I think.
Thanks for help,