[GRASS-user] Openness Calculation

[Rebecca Bennett]

Dear GRASS users,
 
I have recently been made aware of the positive and negative openness vizualisations (Yokoyama et al 2002 http://www.asprs.org/a/publications/pers/2002journal/march/2002_mar_257-265.pdf) and would like to try to compute them in GRASS to help identify micro relief.
 
Though I suspect that this has already been done, I can't find a heads up other than this paper (which claims to have creates the web service based on GRASS here http://geobrain.laits.gmu.edu/grassweb/manuals/raster/openness.html)
http://www.lpi.usra.edu/science/stepinskiWebPage/pdfFiles/geoinformaticsConf2009.pdf
 
Just a note that although similar in it's aim of highlighting microtopography, this is not quite the same as the r.horizon calculation (image attached for clarification).
 
All the best,
Rebecca
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20131104/c024989e/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Openness.png
Type: image/png
Size: 81256 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20131104/c024989e/attachment-0001.png>