Politecnico di Milano
Polo regionale di Como
Prof. M.A. Brovelli, Longoni, Cannata, 2003

http://geomatica.como.polimi.it/
maria@geomatica.como.polimi.it

LIDAR data filtering
--------------------

Command execution order: 

1. s.bspline.reg
2. s.edgedetection
3. s.growing

s.bspline.reg/	: bilinear or bicubic spline interpolation Least quares approach
s.correction/	: DTM correction: error removal (building remainder, vegetation etc)
s.edgedetection/: detection of building edges, vegetation edges, etc.
s.growing/	: filling of previously computed edges

Additional software
s.to.qrast/	: fast sites to raster conversion (replaces s.to.rast)

Related Publications:
- GRASS Users conference 2002, Trento, Italy
  http://www.ing.unitn.it/~grass/proceedings/proceedings/pdfs/Brovelli_Maria_Antonia.pdf 
- Brovelli, Maria A, Cannata, Massimiliano & Longoni, Ulisse M (2004)
  LIDAR Data Filtering and DTM Interpolation Within GRASS.
  Transactions in GIS 8 (2), 155-174.
  Online: http://www.blackwell-synergy.com/servlet/useragent?func=synergy&synergyAction=showTOC&journalCode=tgis&volume=8&issue=2&year=2004&part=null