SAGA GIS is also worth a look (http://www.saga-gis.org).
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).
SAGA API is C++ and implementing own modules is quite straight forward.
Volker
On 03/04/2011 03:05 PM, Stuart Edwards wrote:
GRASS GIS (open source) has several modules for processing raw LiDAR
data and the ability to script your own classification routines. LibLAS
does a nice job of preprocessing (decoding) the LAS files so they can be
input to GRASS as x,y,z or general ASCII format .......see:
http://grass.osgeo.org/wiki/LIDAR#Micro-tutorial
Stu
On Mar 4, 2011, at 1:31 AM, francesco wrote:
Hello List,
I just registered, hello to everyone.
Regarding Aaron's question, I am playing around with LibLAS to develop
a ground classification procedure. It uses Axellson's progressive
triangulation of local minimum points - but I am also looking at other
solutions. Does anyone have other interesting approaches in mind?
Cheers,
Francesco
--
**************************************************
*Francesco Pirotti*
Dep. TESAF
CIRGEO – Interdepartmental Research Center on Cartography Photogrammetry
Remote Sensing and G.I.S.
University of Padova
Web: http://www.cirgeo.unipd.it/cirgeo/francescopirotti.htm
Email: [email protected] <mailto:[email protected]>
Phone: +39 049 827 2710
Phone: +39 349 55 39 261
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Il 04/03/2011 00:49, Aaron Reyna ha scritto:
Ah yes,
I'll try the MCC-LiDAR. Great, thanks for the suggestion!
Aaron
On Thu, Mar 3, 2011 at 3:09 PM, Peter Tittmann
<[email protected] <mailto:[email protected]>> wrote:
I've used MCC-Lidar http://sourceforge.net/apps/trac/mcclidar/ a
little with marginal results. Not a great answer but something.
TeraScan http://www.terrasolid.fi/en/products/terrascan is the
elephant in that room.
Peter
On 03/03/2011 02:43 PM, Aaron Reyna wrote:
This may be too broad of a question, but has anyone seen or
heard of a way to do efficient ground modeling with libLAS? That
is, take raw LiDAR files (all default points) and model out the
ground class? I do have raw LiDAR files if it helps.
Just throwing it out there.
Best,
Aaron
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UC Davis
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