Hi Magnus,
why not pdal? Cause so far I had no clue about it. And after a short
look at the link, I still have none ;) But its a start.
Thanx,
Bernd
On 26.03.21 10:23, Karl Magnus Jönsson wrote:
Hi!
Lots of suggestions here. But if I understand you correct it is lidar data and
all about photogrammetry is not in question. Why not pdal? Open source,
powerful and what QGIS is using in 3.18.
https://pdal.io/
Karl-Magnus
-----Ursprungligt meddelande-----
Från: Qgis-user <qgis-user-boun...@lists.osgeo.org> För Bernd Vogelgesang
Skickat: den 26 mars 2021 09:35
Till: Benoit de Cabissole <ben...@geoproc.com>; qgis-user
<qgis-user@lists.osgeo.org>
Ämne: Re: [Qgis-user] First steps with 3D Scan Data?
Hi Benoit,
ok, thanks. las then.
But when I read about the lastools plugin, the description says that I need to
install the lastools software, and the website there tells me that the license
is about 1500€ which is a little too much for some learning efforts.
Any other options?
Cheers,
Bernd
On 26.03.21 09:28, Benoit de Cabissole wrote:
Hi Bernd,
OK, that more info!
The files are likely to be in Timble RealWorks format.
So you will have to get your contractor to provide you with .las
files, otherwise your stuck buying RealWorks!
Or, perhaps, the viewer is able to export in .las??
When you get las files, you can use lastools plugin for QGIS to
process them.
Cheers,
Benoit
On 26/03/2021 10:01, Bernd Vogelgesang wrote:
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
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