[pgpointcloud] Howto read/convert PTS or PTX formats?

[Stefan Keller]

Hi Martin

I did not realize that pointzip is based on laszip since pointzip mentions
only that it "(... uses the LASzip compression algorithm)".
And I did not find a documentation that mentions that laszip supports PTX.
I'm actually very comfortable with laszip being a command line tool.
What I'm still wishing is that laszip would support pointcloud - or thatt
PDAL would support .PTX...:-)

Yours, Stefan





2013/10/11 Martin Isenburg <martin.isenburg at gmail.com>

> Hello.
>
> you can use the pointzip.exe tool, but that is mainly meant to "take
> the edge off" as it has been my experience that the terrestrial
> scanner folks are very GUI centric and these folks seem reluctant to
> enter the command-line world.
>
> instead of using pointzip.exe through the GUI you can also use
>
> laszip -i in.pts -ipts -o out.laz
>
> or
>
> laszip -i in.ptx -iptx -o out.laz
>
> and the extra PTS or PTX information will be stored in an additional
> VLR record so it could be recovered if needed (for the PTX it is
> likely needed if there are any values in the translation or rotation
> matrices)
>
> Is pointzip.exe being used much in the terrestrial world? I got a lot
> of feedback after release but it has died down since.
>
> Martin
>
> PS: The web-site http://pointzip.org is really meant to house the
> "generic" compressor someday and I am still waiting vor Dave (USACE)
> or Paul (Elephant) to get back to me on that.
>
> On Fri, Oct 11, 2013 at 2:36 AM, Stefan Keller <sfkeller at gmail.com> wrote:
> > Hi Howard (and hello to Mateusz too)
> >
> > Thanks for your replies. I'm new to converting LIDAR data (I'm rather
> used
> > to vector and raster conversion) but I thought I'm not the first one to
> > process FARO Focus3d data.
> >
> > So my hope relies on a PTX->LAS conversion using Martin's pointzip before
> > importing LAS->PostgreSQL/PostGIS/pointcloud).
> >
> > Or do you suggest to go back to the FARO device/software (which I don't
> have
> > right now) and export to another format, which can be read then directly
> > into PostgreSQL by PDAL (or another tool)?
> >
> > Yours, Stefan
> > (Maintainer of http://geoconverter.hsr.ch)
> >
> >
> > 2013/10/10 Howard Butler <howard at hobu.co>
> >>
> >>
> >> On Oct 9, 2013, at 5:22 PM, Stefan Keller <sfkeller at gmail.com> wrote:
> >>
> >> > Hi,
> >> >
> >> > I got data from a FARO Focus3d LIDAR scanner I think in PTS or PTX
> >> > format.
> >> > Does anybody have experiences in reading these formats - or at least
> >> > converting them to LAS?
> >> > I found pointzip [1] but I'd like to use PDAL since my target is
> >> > PostgreSQL (pointcloud extension) and PDAL supports writing to this
> >> > database.
> >> >
> >> > Yours, Stefan
> >> >
> >> > [1] http://www.cs.unc.edu/~isenburg/pointzip/
> >>
> >> PDAL doesn't support PTS or PTX at this time. The FARO folks would most
> >> likely need to provide either a binary API so that a PDAL driver could
> be
> >> written for their format(s), or alternatively, some sort of document(s)
> >> describing the binary layout of the formats so that a driver could be
> >> written.
> >>
> >> Sorry I can't be of more help.
> >>
> >> Howard
> >>
> >>
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/pgpointcloud/attachments/20131011/66a27b07/attachment.html>