Cave surveying with LIDAR

[Jeskynar]

Thanks!  I'm looking into how I might stitch together multiple scans from a
BLK360 lidar scanner to produce a decent cave survey.
I guess the problems are: 1) how best to perform the scans, where to
position the scanner, whether to use registration markers
2) how to stitch together the resulting scans, 3) how to clean up the data,
4) how to build a useful model

I guess you mean meshlab not meshlan? meshlab seems to have been untouched
for a few years now.
I'll have a look at cloudcompare. I've got access to autodek recap pro but
I'm not liking it so far.

Andrew


On Wed, 13 Nov 2019 at 09:53, Mike Lake <mikel at speleonics.com.au> wrote:

> Hi Andrew
>
> I have surveyed caves with a Zebedee quite a few years ago, before it
> was commercially available. Probably several kms of passage. That
> doesn't give me an expertise it it though :-) I use Meshlan and
> CloudCompare to view and manipulate the point cloud data.
>
> This youtube video if of the Cliefden Main Cave Survey using the Zebedee
> https://youtu.be/o7otVG2cKD4
> The data in here is downsampled quite a lot but still shows cars and
> trees on the surface. The cars on the surface just under the big tree
> gives a bit of scale.
>
> Also surveyed a few other caves at Cliefden and at Wombeyan surveyed the
> entrance of Victoria Arch, and Wollondilly and Junction Caves. Also
> surveyed a quarry on the surface at Wombeyan Caves.
>
> What did you want to know?
>
> ---
> Mike
>
> On 2019-11-13 00:31, Jeskynar wrote:
> > Hi
> >
> > Does anyone here have experience with surveying caves using LIDAR?
> >
> > Andrew
>
> --
> Cave-Surveying https://lists.survex.com/mailman/listinfo/cave-surveying
>
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