+- ReSe User Support Forum (https://forum.rese-apps.com)
+-- Forum: Frequently Asked Questions (https://forum.rese-apps.com/forumdisplay.php?fid=1)
+--- Forum: ATCOR-4 (FAQ) (https://forum.rese-apps.com/forumdisplay.php?fid=5)
+--- Thread: What is the required DEM spatial resolution topographic correction? (/showthread.php?tid=33)
What is the required DEM spatial resolution topographic correction? - rese_support - 30-Sep-2014
A DEM spatial resolution comparable to the image resolution is sufficient for most applications. Even if the DEM pixel size is larger than the image pixel a clear reduction of topographic illumination effects is usually achieved. However, areas of steep slopes that are smoothed in the coarse-resolution DEM may lead to artifacts. In practice we often have to live with DEM resolutions of 50 - 100m, because higher resolution DEM's are not available or too expensive.