[gdal-dev] Generating Viewsheds without Using Sightlines

[Tamas Szekeres]

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_87-90.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?

Best regards,

Tamas
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