[gdal-dev] Generating Viewsheds without Using Sightlines

Even Rouault even.rouault at spatialys.com
Mon Sep 30 11:54:36 PDT 2019

On lundi 30 septembre 2019 20:10:38 CEST Tamas Szekeres wrote:
> Hi,
> I've implemented a viewshed algorithm a while ago, by utilizing a modified
> version of the algorithm published at
> https://www.asprs.org/wp-content/uploads/pers/2000journal/january/2000_jan_8
> 7-90.pdf
> With this approach, it was crucial to provide a fast real-time option for
> the viewshed calculation on relatively large raster DEMs by using only a
> small memory footprint.
> The implementation can be found here:
> https://github.com/szekerest/gdal/blob/viewshed/gdal/alg/viewshed.cpp
> https://github.com/szekerest/gdal/blob/viewshed/gdal/apps/gdal_viewshed.cpp
> Does it make sense to spend some more effort and incorporate this approach
> in GDAL officially?

Sounds useful to me ! 
(old memories of having implement line-of-sight based intervisibility 
algorithm in a past life !)


Spatialys - Geospatial professional services

More information about the gdal-dev mailing list