This work was focused on uses for intervisibility computations, but has other applications.
|Two grids.||You can use two of the following three grids,
and compute the third on the fly:
You could also try creating vegetation height grids from medium scale data sets.
|Point cloud||Software can search the neighborhood of a point to find vegetation, getting either presence/absence or a density.|
|Vegetation density voxel grids||These provide indexing for rapid access, and significant compression|
Create major categories ground, vegetation, buildings, and power lines. I have not actually seen a point cloud with classified power lines, but LAS 1.4 has new categories for them, so they will be appearing. They are currently being created with the Reserved classifications, which will be different for every program that classifies data.
|Classify point cloud|
|Split LAS file into classification layers||
|Remove ground returns||
|Deal with unclassified points||
last revision 8/8/2012