If you can export your file as a las/laz file (or it also takes PolyCam's zip file of a laz file), then I have a place where you can preview it using the potree.org software. https://las.nix.how/ Try using the shortcode: c0987 to see a scan that was made underwater using photogrammetry. The potree software converts the pointcloud into streamed data, so it doesn't matter how massive your starting scan is as it only loads a limited amount. This is used as the starting point for tunnelvr, should you choose to use it for tracing up your scan into a 3D map representation. Julian. On Wed, 29 Nov 2023 at 13:28, Bill Gee <bgee@campercaver.net> wrote:
Hello everyone -
This is probably more of a general practices question than something specific to Therion. Among the group there is likely to be some experience with this. I hope at minimum someone can guide me to a place for further learning.
A few years ago Apple released a very high-end smartphone which has a LIDAR feature (iPhone 12 Pro). There are a few more models now which have it. I have heard of some people using this to create cave maps. There is much I do not understand.
Has anyone in the group taken the point cloud from an Apple LIDAR scan and turned it into a Therion cave map? If so, I am very interested in the details of the process.
The biggest issue I see is this: How does the iPhone know where it is? There is no GPS in a cave. GPS is not accurate enough even if it did work. Inertial navigation also has big problems dealing with a cave environment.
There are many other issues, but I think that is the big one.
Thanks!
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