Hi everyone and Bill Same question as bill and quite interested as well to learn more about this techno and may be to test it as well.About the localisation I don't know yet how they can localise something in cave but for sure if you link lidar survey to each centerline point made by the DsitoX you can probably turnaround this issue witch is worthwhile if the lidar takes significant higher quantity of datas. David Le mercredi 29 novembre 2023 à 14:28:26 UTC+1, Bill Gee <bgee@campercaver.net> a écrit : 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! -- =============== Bill Gee _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion