On Wed, Nov 29, 2023 at 2:28 PM 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 model must be converted into a raster image, it can be processed.
The biggest issue I see is this: How does the iPhone know where it is?
The iPhone doesn't know, it doesn't use GPS for lidar. The model must be adjusted for surveying.
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!
-- =============== Bill Gee _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion
Balázs Holl