When 3D scanning an object, it’s crucial that the scanner keep monitoring any time it’s saving factors. Poor monitoring will end in noisy level clouds, distorted geometry, or whole failure. To make nice monitoring handy and straightforward to attain, firstgizmo designed these 3D-printable magnetic 3D scanning marker towers.
3D scanners keep monitoring in one in all two methods: by analyzing distinctive geometric options and utilizing these as spatial reference factors, or by searching for distinctive patterns of reflective markers to make use of as spatial reference factors. In my expertise, the previous is so unreliable that it’s virtually ineffective. It solely works effectively on objects with numerous distinctive geometry (like sculptures) and even then, the geometry typically turns into distorted as minor monitoring errors add up. A clean sphere, for instance, could be virtually not possible to scan all the way in which round.
Markers are a lot, a lot better, however they’re a ache to stay on after which take off. They’re additionally tough to make use of on skinny issues, like a sheet metallic half, as a result of the scanner can’t see each side on the identical time and doesn’t know easy methods to merge the places of each scanned sides.
These markers remedy these issues. They’re obtainable in a number of completely different shapes and sizes, however all of them present surfaces on which to play marker stickers. Print a handful of them, cowl them in markers, after which scatter them round your half. Magnets within the bases hold them safe. Then, whenever you’re scanning, the 3D scanner will at all times have a number of distinctive marker patterns in view and can at all times keep monitoring — the geometry of the half itself is irrelevant.
After scanning, merely delete the markers out of your level cloud earlier than meshing. Straightforward!
I’ve been utilizing an identical setup, with markers scattered on a scanning platform, however that is higher as a result of it provides verticality. So that you gained’t lose monitoring, even when scanning tall objects from the facet.