The Canopy Height Model (CHM) can be obtained by subtracting DEM from DSM, and the following figure shows the the relationship of the DSM (Digital Surface Model), DEM (Digital Elevation Model) and the CHM(Canopy Height Model).
Using this function requires a DEM and a DSM. Click on the Terrain > CHM.
- Input DSM: Input a DSM file, the generation method can be seen in DSM.
- Input DEM: Input a DEM file, the generation method can be seen in DEM.
- Output CHM: The path of CHM file to save.
The original point cloud (seen left below) and the generated CHM(see figure right below).