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

[Stefan Keller]

> What I'm still wishing is that laszip would support pointcloud - or that
PDAL would support .PTX...:-)

... in other words: What would be more straight forward to implement (for
me/us)?

-S.


2013/10/11 Stefan Keller <sfkeller at gmail.com>

> 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
>> >>
>> >>
>> >
>>
>
>
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