How to extract impervious areas (like buildings, rails, pavements etc.) from las dataset and receive it like a raster? I tried to do it with intensity, but there are many valids with vegetation.
I am working with ArcGis Pro 10.1. I generated and reclassified a raster of intensity with range 0-180 => value 1 (values without NODATA), then I created next raster, a nDSM without medium and high vegetation => value 1 (medium, high vegetation - NODATA).
After that, I used a raster calculator and summed this two rasters; value 2 responds like my results. I was doing it with raster cell sizes equal to 0.2m, but the nDSM with this cell size was not satisfactory (the las dataset have 12 pts/m²). For example, buildings were not filled completely, and I created this nDSM with cell size 1m. So, at the moment my results are a little bit generalized, which is not satisfactory too.