[pgpointcloud] Full waveform data

[Rémi Cura]

Glad this (long) paper is useful for somebody ^^ .
Cheers,
Rémi-C

2017-01-10 23:45 GMT+01:00 Adam Steer <Adam.Steer at anu.edu.au>:

> Thanks Rémi, Kevin - this question is really interesting to us also.
>
> Rémi’s second suggestion was what sprung immediately mind for me - the
> first requires more knowledge than I have on how to index things well.
>
> Regards
>
> Adam
>
>
> > On 11 Jan 2017, at 8:44 am, Kevin Beam <kevin.beam at nsidc.org> wrote:
> >
> > Thank you Rémi-C. You described those solutions very well. At this point
> > we are only trying to determine the feasibility of full waveform data
> > using pgpointcloud and won't be implementing it yet. But if we do, I
> > think the two solutions you've outlined below are where we will start.
> >
> > As an aside, we *very much* appreciated your paper with Perret and
> > Paparoditis earlier this year in ISPRS Journal of Photogrammetry and
> > Remote Sensing. It was very helpful to us in our prototype.
> >
> > Cheers,
> > Kevin
> >
> > On 01/10/2017 06:44 AM, Rémi Cura wrote:
> >> - (super simple) use pgpointcloud as-is to store bounds of samples
> >> position/time per waveform . The samples are stored elsewhere (blob, or
> >> simply array of char), and the waveform geometric information (geometry
> of
> >> the laser ray) is stored in base.
> >> This allows you to use pgpointcloud with fast index to find the relevant
> >> samples, then when you want to use the ful waveform, you get the
> >> appropriate data and use your custom solutions.
> >>
> >> - (need some work) add a new type of point dimension to pgpointcloud to
> >> directly store the full waveframe samples in pgpointcloud, (the waveform
> >> samples are all stored in one dimension of the point), and some
> utilitary
> >> functions may be able to generate the samples as 3D points (with each
> >> sample being a point with intensity).
> >
> > --
> > Kevin Beam
> > kbeam at nsidc.org
> > Software Engineer
> > National Snow and Ice Data Center (NSIDC)
> > University of Colorado Boulder
> >
> > _______________________________________________
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> > pgpointcloud at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/pgpointcloud
>
>
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