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<DIV><FONT size=2>Thanks, I'll have a look.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Steve</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=neteler@itc.it href="mailto:neteler@itc.it">Markus Neteler</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Newsgroups:</B>
gmane.comp.gis.gdal.devel</DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=Gdal-dev@lists.maptools.org
href="mailto:Gdal-dev@lists.maptools.org">Gdal-dev@lists.maptools.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, December 17, 2005 11:54
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: LiDAR processing</DIV>
<DIV><BR></DIV>On Thu, Dec 15, 2005 at 08:31:14PM -0700, GeoWiz wrote:<BR>>
I was wondering if there are any good open source projects going on that
<BR>> involve processing lidar data.<BR>> <BR>> Thanks,<BR>> Steve
<BR><BR>Steve,<BR><BR>you may check GRASS 5.4, it contains the software from
Prof Maria Brovelli,<BR>Italy. See the src.contrib/POLIMICO/
directory.<BR><BR>Here the README details:<BR><BR>LIDAR data
filtering<BR>--------------------<BR><BR>Command execution order:<BR><BR>1.
s.bspline.reg<BR>2. s.edgedetection<BR>3.
s.growing<BR><BR>s.bspline.reg/ : bilinear or bicubic spline
interpolation Least quares approach<BR>s.correction/ : DTM
correction: error removal (building remainder, vegetation
etc)<BR>s.edgedetection/: detection of building edges, vegetation edges,
etc.<BR>s.growing/ : filling of previously
computed edges<BR><BR>Additional
software<BR>s.to.qrast/ : fast sites to raster
conversion (replaces s.to.rast)<BR><BR>Related Publications:<BR>- GRASS Users
conference 2002, Trento, Italy<BR> <A
href="http://www.ing.unitn.it/~grass/proceedings/proceedings/pdfs/Brovelli_Maria_Antonia.pdf">http://www.ing.unitn.it/~grass/proceedings/proceedings/pdfs/Brovelli_Maria_Antonia.pdf</A><BR><BR>-
Brovelli, Maria A, Cannata, Massimiliano & Longoni, Ulisse M
(2004)<BR> LIDAR Data Filtering and DTM Interpolation Within
GRASS.<BR> Transactions in GIS 8 (2), 155-174.<BR> Online: <A
href="http://www.blackwell-synergy.com/servlet/useragent?func=synergy&synergyAction">http://www.blackwell-synergy.com/servlet/useragent?func=synergy&synergyAction</A>=<BR>showTOC&journalCode=tgis&volume=8&issue=2&year=2004&part=null<BR><BR>Note
that 5.4-CVS contains some updates which will appear in the<BR>next 5.4.x
release of GRASS.<BR><BR>Hope this helps<BR><BR> Markus<BR><BR>--
<BR>Markus Neteler <neteler itc
it> <A
href="http://mpa.itc.it">http://mpa.itc.it</A><BR>ITC-irst - Centro per
la Ricerca Scientifica e Tecnologica<BR>MPBA - Predictive Models for Biol.
& Environ. Data Analysis<BR>Via Sommarive,
18
- 38050 Povo (Trento),
Italy</BLOCKQUOTE></BODY></HTML>