Hello Adrian,
You might want to pop over to here for a swift introduction to lidar
visualisation for detecting archaeological features:
http://www.rspsoc.org.uk/SIG/ARCHSIG/NEWSLETTER/ArchSIG%20Newsletter%20Spring%202013.pdf
and here to read about the technical aspects of some of the visualisations that
you might want to do when you've rasterised the data...
http://www.pushingthesensors.com/wp-content/uploads/2012/06/RBennett_AP1414.pdf
all of which can be done in GRASS as per stuff I documented here:
http://www.pushingthesensors.com/thesis/
For point clouds there is a linux viewer from Oliver Kreylos
http://idav.ucdavis.edu/~okreylos/ResDev/LiDAR/index.html
and a free viewer from Fugro http://www.fugroviewer.com/ that works on Windows
and linux (via WINE).
You may want to give some careful thought as to how you'd like to map / record
the features you identify. Please feel free to contact me off list if you have
any questions.
Best wishes,
Rebecca Bennett
Postdoctoral Associate, Wired! Group
Department of Art, Art History and Visual Studies
Duke University, Durham, NC
www.pushingthesensors.com
>________________________________
> From: Hamish <[email protected]>
>To: GRASS user list <[email protected]>; Adrian Kirilov
><[email protected]>
>Sent: Saturday, 13 April 2013, 8:45
>Subject: Re: [GRASS-user] 3D Point Cloud Visualization
>
>
>Adrian wrote:
>> My work with GRASS GIS is related to Airborne Laser Scanning
>> (ALS) data. I have to discover archaeological structures. For
>> the purpose I need to visualize the data as a 3d point cloud.
>> How can I do that in GRASS?
>
>start here:
> http://grasswiki.osgeo.org/wiki/LIDAR
>
>
>(ground based laser scanning is more difficult as nviz doesn't
>like more than a few million vector points, but actual 3D point
>cloud viz is possible [see the "Help with 3D" wiki page])
>
>if you really want point cloud viz, see the PCL library:
> http://pointclouds.org
>
>GRASS focuses more on the analysis of LiDAR data (which is what
>will give you answers instead of just the pretty pictures :)
>
>see also www.liblas.org
>
>
>Hamish
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>grass-user mailing list
>[email protected]
>http://lists.osgeo.org/mailman/listinfo/grass-user
>
>
>
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