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Definitively will check SAGA GIS out (I already downloaded it). I am
still trying to find the perfect GIS box ...<br>
Cheers,<br>
Francesco<br>
<br>
Il 06/03/2011 20:07, Volker Wichmann ha scritto:
<blockquote cite="mid:4D73DB63.1050600@laserdata.at" type="cite">SAGA
GIS is also worth a look (<a class="moz-txt-link-freetext" href="http://www.saga-gis.org">http://www.saga-gis.org</a>).
<br>
<br>
It uses libLAS for LAS file import to the SAGA native point cloud
format. SAGA includes several tools to manipulate the point cloud,
e.g. an attribute calculator, reclassifier, subset extractor and
many other methods like gridding and interpolation. There is also
(a grid based) bare earth filter, adapted from Vosselman (2001).
<br>
<br>
SAGA API is C++ and implementing own modules is quite straight
forward.
<br>
<br>
Volker
<br>
<br>
On 03/04/2011 03:05 PM, Stuart Edwards wrote:
<br>
<blockquote type="cite">GRASS GIS (open source) has several
modules for processing raw LiDAR
<br>
data and the ability to script your own classification routines.
LibLAS
<br>
does a nice job of preprocessing (decoding) the LAS files so
they can be
<br>
input to GRASS as x,y,z or general ASCII format .......see:
<br>
<br>
<a class="moz-txt-link-freetext" href="http://grass.osgeo.org/wiki/LIDAR#Micro-tutorial">http://grass.osgeo.org/wiki/LIDAR#Micro-tutorial</a>
<br>
<br>
Stu
<br>
<br>
<br>
On Mar 4, 2011, at 1:31 AM, francesco wrote:
<br>
<br>
<blockquote type="cite">Hello List,
<br>
I just registered, hello to everyone.
<br>
Regarding Aaron's question, I am playing around with LibLAS to
develop
<br>
a ground classification procedure. It uses Axellson's
progressive
<br>
triangulation of local minimum points - but I am also looking
at other
<br>
solutions. Does anyone have other interesting approaches in
mind?
<br>
Cheers,
<br>
Francesco
<br>
--
<br>
**************************************************
<br>
*Francesco Pirotti*
<br>
Dep. TESAF
<br>
CIRGEO – Interdepartmental Research Center on Cartography
Photogrammetry
<br>
Remote Sensing and G.I.S.
<br>
University of Padova
<br>
Web: <a class="moz-txt-link-freetext" href="http://www.cirgeo.unipd.it/cirgeo/francescopirotti.htm">http://www.cirgeo.unipd.it/cirgeo/francescopirotti.htm</a>
<br>
Email: <a class="moz-txt-link-abbreviated" href="mailto:francesco.pirotti@unipd.it">francesco.pirotti@unipd.it</a>
<a class="moz-txt-link-rfc2396E" href="mailto:francesco.pirotti@unipd.it"><mailto:francesco.pirotti@unipd.it></a>
<br>
Phone: +39 049 827 2710
<br>
Phone: +39 349 55 39 261
<br>
**************************************************
<br>
<br>
<br>
Il 04/03/2011 00:49, Aaron Reyna ha scritto:
<br>
<blockquote type="cite">Ah yes,
<br>
<br>
I'll try the MCC-LiDAR. Great, thanks for the suggestion!
<br>
<br>
Aaron
<br>
<br>
On Thu, Mar 3, 2011 at 3:09 PM, Peter Tittmann
<br>
<<a class="moz-txt-link-abbreviated" href="mailto:pwtittmann@ucdavis.edu">pwtittmann@ucdavis.edu</a>
<a class="moz-txt-link-rfc2396E" href="mailto:pwtittmann@ucdavis.edu"><mailto:pwtittmann@ucdavis.edu></a>> wrote:
<br>
<br>
I've used MCC-Lidar
<a class="moz-txt-link-freetext" href="http://sourceforge.net/apps/trac/mcclidar/">http://sourceforge.net/apps/trac/mcclidar/</a> a
<br>
little with marginal results. Not a great answer but
something.
<br>
TeraScan <a class="moz-txt-link-freetext" href="http://www.terrasolid.fi/en/products/terrascan">http://www.terrasolid.fi/en/products/terrascan</a>
is the
<br>
elephant in that room.
<br>
<br>
Peter
<br>
<br>
<br>
On 03/03/2011 02:43 PM, Aaron Reyna wrote:
<br>
<blockquote type="cite"> This may be too broad of a
question, but has anyone seen or
<br>
heard of a way to do efficient ground modeling with
libLAS? That
<br>
is, take raw LiDAR files (all default points) and
model out the
<br>
ground class? I do have raw LiDAR files if it helps.
<br>
<br>
Just throwing it out there.
<br>
<br>
Best,
<br>
<br>
Aaron
<br>
<br>
<br>
<br>
_______________________________________________
<br>
Liblas-devel mailing list
<br>
<a class="moz-txt-link-abbreviated" href="mailto:Liblas-devel@lists.osgeo.org">Liblas-devel@lists.osgeo.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:Liblas-devel@lists.osgeo.org"><mailto:Liblas-devel@lists.osgeo.org></a>
<br>
<a class="moz-txt-link-freetext" href="http://lists.osgeo.org/mailman/listinfo/liblas-devel">http://lists.osgeo.org/mailman/listinfo/liblas-devel</a>
<br>
</blockquote>
<br>
--
<br>
Peter Tittmann
<br>
Geography Graduate Group
<br>
UC Davis
<br>
c. 707 849 4135
<br>
</blockquote>
</blockquote>
</blockquote>
_______________________________________________
<br>
Liblas-devel mailing list
<br>
<a class="moz-txt-link-abbreviated" href="mailto:Liblas-devel@lists.osgeo.org">Liblas-devel@lists.osgeo.org</a>
<br>
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<br>
<br>
<br>
</blockquote>
<br>
<br>
<div class="moz-signature">-- <br>
<font face="Arial, Helvetica, sans-serif" size="-1">
**************************************************<br>
<b>Francesco Pirotti</b> <br>
Dep. TESAF <br>
CIRGEO – Interdepartmental Research Center on Cartography
Photogrammetry <br>
Remote Sensing and G.I.S. <br>
University of Padova <br>
Web: <a
href="http://www.cirgeo.unipd.it/cirgeo/francescopirotti.htm">http://www.cirgeo.unipd.it/cirgeo/francescopirotti.htm</a>
<br>
Email: <a href="mailto:francesco.pirotti@unipd.it">francesco.pirotti@unipd.it</a>
<br>
Phone: +39 049 827 2710 <br>
Phone: +39 349 55 39 261<br>
**************************************************
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