Editing Digital elevation model (section)

===Methods for obtaining elevation data used to create DEMs===

[[File:GatewingX100.jpg|thumb|Gatewing X100 [[unmanned aerial vehicle]]]]

* [[Lidar]]<ref name="Campbell"/>
* [[Radar]]
* [[Stereo photogrammetry]] from [[aerial surveys]]
** [[Structure from motion]] / Multi-view stereo applied to aerial photography<ref>{{Cite journal | doi=10.1029/2011JF002289| title=Straightforward reconstruction of 3D surfaces and topography with a camera: Accuracy and geoscience application| journal=Journal of Geophysical Research: Earth Surface| volume=117| year=2012| last1=James| first1=M. R.| last2=Robson| first2=S.| issue=F3| pages=n/a| bibcode=2012JGRF..117.3017J| url=https://eprints.lancs.ac.uk/id/eprint/56018/1/James_and_Robson_2012_SfM_MVS.pdf| doi-access=free}}</ref>
* Block adjustment from optical satellite imagery
* Interferometry from radar data
* [[Real Time Kinematic]] [[GPS]]
* [[Topographic map]]s
* [[Theodolite]] or [[total station]]
* [[Doppler radar]]
* [[Focus variation]]
* Inertial surveys
* Surveying and mapping [[UAV|drones]]
* [[Range imaging]]