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A Few Of Guessologists Finds
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<blockquote data-quote="Guessologist" data-source="post: 518139" data-attributes="member: 11952"><p>I've also been having a play with photogrammetry and building a 3D model of how that florin was sitting in the ground. I took about a dozen photos around the hole when I uncovered it, and fed it into the open-source Meshroom photogrammetry software to generate a model. Using CloudCompare I set the scale for the model (easy to do since I know the diameter of the coin) and can cut sections through it all. Looks like it wasn't quite sitting flat in the ground, more like at 25 degrees dip at a depth of 100mm. It'll be interesting to do the same with a coin sitting on edge in the ground if I could dig it without dislodging it...</p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/11952/1571697252_photogrammetry.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Guessologist, post: 518139, member: 11952"] I've also been having a play with photogrammetry and building a 3D model of how that florin was sitting in the ground. I took about a dozen photos around the hole when I uncovered it, and fed it into the open-source Meshroom photogrammetry software to generate a model. Using CloudCompare I set the scale for the model (easy to do since I know the diameter of the coin) and can cut sections through it all. Looks like it wasn't quite sitting flat in the ground, more like at 25 degrees dip at a depth of 100mm. It'll be interesting to do the same with a coin sitting on edge in the ground if I could dig it without dislodging it... [img]https://www.prospectingaustralia.com/forum/img/member-images/11952/1571697252_photogrammetry.jpg[/img] [/QUOTE]
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