Creating a Canopy DEM from LiDAR

In a previous post, I described how to create a hybrid hillshade from a standard bare-earth DEM and a DEM including canopy.  Well, what if you don’t have a fancy canopy DEM? Do you have classified LiDAR data, or know where to get your hands on some? Then you are in luck! I’m here to walk you through the process of creating your very own canopy DEM in ArcGIS.

CanopyHeight.jpg

Continue reading “Creating a Canopy DEM from LiDAR”

Taking the Best of Both Worlds for a Better Hillshade

A popular cartographic element is the venerable hillshade. With a good hillshade and a transparent overlay, you can add a lot of topographic context to your map without being overly distracting. Most of us have probably used a  bare earth hillshade before. These are great if you just want to look at the underlying terrain, or if you are covering a wide area.

For close-in work, creating a hillshade from DEM that includes the vegetation canopy can make things much more interesting. However, if you look closely at the canopy hillshade, you’ll notice that many of the terrain features no longer stand out, even where there is little to no vegetation. This is because individual trees and shrubs create more steep areas, which proceed to hog the dark end of the stretched histogram. So what’s a cartographer to do? Continue reading “Taking the Best of Both Worlds for a Better Hillshade”