[Qgis-user] First steps with 3D Scan Data?

[info]

Hi Bernd,

Well, could you give more info? E.g. what kind of scan: 
laser/lidar/photo/other? This will influence your workflow.

+/-Open source laser/lidar could be based on lastools [1]
Open source photogrammetry could be based on AliceVision meshroom 
[2,3],  MeshLab [4] and blender [5]

In photogrammetry: Agisoft metashape [6] and pix4D [7] as good 
commercial products.

BTW: 32 scans, if photos, is quite a very low number of photos for 
reconstructing a 3D scene!

Hope this helps.
Cheers,
Benoit de Cabissole

[1] http://lastools.org/
[2] https://alicevision.org/#photogrammetry
[3] https://github.com/alicevision/meshroom
[4] https://www.meshlab.net/
[5] https://www.blender.org/
[6] https://www.agisoft.com/
[7] https://www.pix4d.com/



On 25/03/2021 23:07, Bernd Vogelgesang wrote:
> Hi folks,
>
> in a project on a former dumpside now to be transformed into a sand
> lizard habitat, I saw the chance to get my hands dirty for the first
> time on 3D scan data (terrestrial). I received 10GB of stuff, and now
> I'm completely lost.
>
> The data consists of .rwcx files, .tzf files and lots of other stuff.
>
> Is there any chance that I can process any of this data with an open
> source stack?
> Or what should be done, to make them digestible?
>
> Second step: There seem to be 32 different scans of the area form all
> angles. In case I succeed to somehow load the data, how do I combine 
> them ?
>
> For the first steps, I actually "only" would like to generate a decent
> DEM from the data to be able to place some features on a map for the
> guys in charge to do the habitat stuff.
>
> Any kind of hints or links to reads about this topic would be appreciated
>
> Cheers,
>
> Bernd
>
>
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