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Fascinating! In the header image, the interesting gray-bar informational panel placed on the wreck caught my eye. I wonder what it's for? I assume it's to cal
by bowmessage 1y ago
Fascinating!
In the header image, the interesting gray-bar informational panel placed on the wreck caught my eye. I wonder what it's for?
I assume it's to calibrate scale and color for the underwater photography equipment, but would be interested to learn more from someone who knows for certain.
- kbutler 1y agoYes, looks like ground control points for photogrammetry. https://www.pix4d.com/blog/diving-into-underwater-photogrammetry/ https://www.pix4d.com/blog/diving-into-underwater-photogramm...
- mikestew 1y agoAnd why does it have a U. S. National Parks Service logo on it?
- throwup238 1y agoIt's a photogrammetry scale card made for the National Park Service, probably the Submerged Resources Center which often assists with this kind of stuff. The NPS has a few different ones for paleontology, underwater archaeology, etc.
- mikestew 1y agoInformative answer, thanks.