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

[Jean-Roc Morreale (ml)]

Hi,

Those are propriatary file format made to be use with Trimble products
such as Trimble Business Center or Realworks, there is nothing you can
but ask someone having one of these softwares to convert it to E57 (if
you want the pictures) or LAS/LAZ (point cloud only). There is nothing
that QGIS or the underlying library (PDAL) can do with such a closed
dataset.

regards
JRM

Le vendredi 26 mars 2021 à 09:01 +0100, Bernd Vogelgesang a écrit :
> Hi Benoit,
> 
> as I was not present when the scans were made, I can only assume that
> this was a laser scanner on a tripod.
> 
> With the sent data, there is a Trimble Scan Explorer Viewer software
> where I can make a "virtual walk" through the scene, so there have to
> be
> photos but also laser scan data as I can see from different view
> modes.
> 
> As I said, this is the very first time I get in touch with this
> stuff,
> and Google was of no big help so far.
> 
> Besides of tons of other files, the bigger ones with around 50 to 80
> MB
> are .rwcx and .tzf files.
> I hoped that someone would know what these file explicitly hold, and
> what I have to do to get them e.g. into QGIS or other open source
> software.
> 
> Cheers,
> 
> Bernd
> 
> On 26.03.21 08:40, info wrote:
> > 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
> > > 
> > > 
> > > _______________________________________________
> > > Qgis-user mailing list
> > > Qgis-user at lists.osgeo.org
> > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user