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<div dir="ltr" data-setdir="false">Hi everyone and Bill</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Same question as bill and quite interested as well to learn more about this techno and may be to test it as well.</div><div dir="ltr" data-setdir="false">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.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">David</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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Le mercredi 29 novembre 2023 à 14:28:26 UTC+1, Bill Gee <bgee@campercaver.net> a écrit :
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<div><div dir="ltr">Hello everyone -<br></div><div dir="ltr"><br></div><div dir="ltr">This is probably more of a general practices question than something <br></div><div dir="ltr">specific to Therion. Among the group there is likely to be some <br></div><div dir="ltr">experience with this. I hope at minimum someone can guide me to a place <br></div><div dir="ltr">for further learning.<br></div><div dir="ltr"><br></div><div dir="ltr">A few years ago Apple released a very high-end smartphone which has a <br></div><div dir="ltr">LIDAR feature (iPhone 12 Pro). There are a few more models now which <br></div><div dir="ltr">have it. I have heard of some people using this to create cave maps. <br></div><div dir="ltr">There is much I do not understand.<br></div><div dir="ltr"><br></div><div dir="ltr">Has anyone in the group taken the point cloud from an Apple LIDAR scan <br></div><div dir="ltr">and turned it into a Therion cave map? If so, I am very interested in <br></div><div dir="ltr">the details of the process.<br></div><div dir="ltr"><br></div><div dir="ltr">The biggest issue I see is this: How does the iPhone know where it is? <br></div><div dir="ltr">There is no GPS in a cave. GPS is not accurate enough even if it did <br></div><div dir="ltr">work. Inertial navigation also has big problems dealing with a cave <br></div><div dir="ltr">environment.<br></div><div dir="ltr"><br></div><div dir="ltr">There are many other issues, but I think that is the big one.<br></div><div dir="ltr"><br></div><div dir="ltr">Thanks!<br></div><div dir="ltr"><br></div><div dir="ltr">-- <br></div><div dir="ltr">===============<br></div><div dir="ltr">Bill Gee<br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Therion mailing list<br></div><div dir="ltr"><a href="mailto:Therion@speleo.sk" rel="nofollow" target="_blank">Therion@speleo.sk</a><br></div><div dir="ltr"><a href="https://mailman.speleo.sk/listinfo/therion" rel="nofollow" target="_blank">https://mailman.speleo.sk/listinfo/therion</a><br></div></div>
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