[GRASS-user] remove buildings and non-natural items from DEM

Markus Neteler neteler at osgeo.org
Wed May 24 22:16:59 PDT 2017


On Thu, May 25, 2017 at 4:53 AM, Eduardo Kanegae
<eduardo.kanegae at gmail.com> wrote:
> Hi there,
>
> I'm running GRASS 7.x from OSGeo Live and I have a 7Gb GeoTiff DEM of my
> city which was acquired by LIDAR.
> But, before generating itens like countours, slope, relief, etc... we'd like
> to remove non-natural objects such as buildings, constructions, light poles,
> tree and in first, to a have terrain model (surface height) before
> generating derived products.
>
> What modules/functions of GRASS should I research for?

Please take a look at
https://grass.osgeo.org/grass72/manuals/vectorintro.html#lidar-data-processing
--> Lidar data processing

where related modules are listed.

Best,
Markus


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