[Liblas-devel] Ground Modeling with RAW LiDAR and libLAS

[Volker Wichmann]

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: francesco.pirotti at unipd.it <mailto:francesco.pirotti at unipd.it>
>> Phone: +39 049 827 2710
>> Phone: +39 349 55 39 261
>> **************************************************
>>
>>
>> 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
>>> <pwtittmann at ucdavis.edu <mailto:pwtittmann at ucdavis.edu>> 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
>>>>
>>>>
>>>>
>>>>     _______________________________________________
>>>>     Liblas-devel mailing list
>>>>     Liblas-devel at lists.osgeo.org  <mailto:Liblas-devel at lists.osgeo.org>
>>>>     http://lists.osgeo.org/mailman/listinfo/liblas-devel
>>>
>>>     --
>>>     Peter Tittmann
>>>     Geography Graduate Group
>>>     UC Davis
>>>     c. 707 849 4135