<div dir="ltr">Thanks! I'm looking into how I might stitch together multiple scans from a BLK360 lidar scanner to produce a decent cave survey.<div>I guess the problems are: 1) how best to perform the scans, where to position the scanner, whether to use registration markers</div><div>2) how to stitch together the resulting scans, 3) how to clean up the data, 4) how to build a useful model</div><div><br></div><div>I guess you mean meshlab not meshlan? meshlab seems to have been untouched for a few years now.</div><div>I'll have a look at cloudcompare. I've got access to autodek recap pro but I'm not liking it so far.</div><div><br></div><div>Andrew</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 13 Nov 2019 at 09:53, Mike Lake <<a href="mailto:mikel@speleonics.com.au">mikel@speleonics.com.au</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Andrew<br>
<br>
I have surveyed caves with a Zebedee quite a few years ago, before it <br>
was commercially available. Probably several kms of passage. That <br>
doesn't give me an expertise it it though :-) I use Meshlan and <br>
CloudCompare to view and manipulate the point cloud data.<br>
<br>
This youtube video if of the Cliefden Main Cave Survey using the Zebedee <br>
<a href="https://youtu.be/o7otVG2cKD4" rel="noreferrer" target="_blank">https://youtu.be/o7otVG2cKD4</a><br>
The data in here is downsampled quite a lot but still shows cars and <br>
trees on the surface. The cars on the surface just under the big tree <br>
gives a bit of scale.<br>
<br>
Also surveyed a few other caves at Cliefden and at Wombeyan surveyed the <br>
entrance of Victoria Arch, and Wollondilly and Junction Caves. Also <br>
surveyed a quarry on the surface at Wombeyan Caves.<br>
<br>
What did you want to know?<br>
<br>
---<br>
Mike<br>
<br>
On 2019-11-13 00:31, Jeskynar wrote:<br>
> Hi<br>
> <br>
> Does anyone here have experience with surveying caves using LIDAR?<br>
> <br>
> Andrew<br>
<br>
-- <br>
Cave-Surveying <a href="https://lists.survex.com/mailman/listinfo/cave-surveying" rel="noreferrer" target="_blank">https://lists.survex.com/mailman/listinfo/cave-surveying</a><br>
</blockquote></div>