I have a Pictish carved stone to scan and make a 3d printed reproduction copy. It’s in a museum and is currently exhibited vertically on the wall. The slab is 540 x 320 x 40mm. I
I would normally do a photogrammetry capture but it’s in the busy part of the museum and I’m not allowed to use lighting or remove the carving to put on a turntable. I don’t have an image of the part but have attached a surrogate image of similar stone and carving detail (shallow fine lines).
I have a Revopoint Range 1 and a Revopoint Mini 1. I am going to have to scan handheld using these.
My question is about capture and processing workflow for this project to try and get the most detail from the available tech I have.
Q:I wonder if anyone has advice about how to use the Revopoint Range and the Revopoint Mini in combination to get the best quality scan from this equipment?
My plan was do one complete capture with the Revopoint Range. Then do separate scans use the Revopoint Mini to capture details and merge together. However I have tried with some samples to merge scans from both scanners of one object but even using 4 markers in the merge function the results were somewhat unsatisfactory.
The Revopoint Mini 1 is fiendish to use I handheld mode but could be useful for some key details which I can cut out of the Range scan and insert. It will be challenging. Q: I wondered if I should add markers? such as Blu Tac cones to help with alignment and registration issues (that’s if I’m allowed to stick Blue Tac to the artefact.
You can’t combine both scans because they use different accuracy so you should do the merging only manually other way you will get seam between the accuracy
Check what is the detail size of the carving relief in mm then use Range or Mini according to accuracy
If the carving details are lower than Range accuracy , use Mini
You can also capture the colors scan using Range and layer transfer the color data to the Mini scan , however with the size and lack of features scanning with Mini will be difficult, it was not made for scanning this dimension so definitely you need a markers
And not far apart than 3 cm from each other
Not easy stuff to capture but not impossible .
If the original stone have some features you may not need markers but you need to make test first .
Thankyou for the advice about the problem of combining scans. It would be best to use the Mini for the whole job but I would need to do multiple scans and there are issues with extra data left after merging scans. It would be good to use markers but I dont think I am allowed to use markers on the carved relief. I will probaby bring into zbrush and blend mesh sections.
Look on the forum for Cloud Compare resp. Cloudcompare. Among the usershere it is commonly used for cleaning up the point cloud data, meshing (with data from mini even to higher details than possible with revoscan atm) and merging.
Cloud Compare will still create a seam from 2 scans that use different accuracy . It can’t magically erase it but Zbrush can because that what I do lol
@Rhett you can create a fine net with markers and just but it on top to prevent sticking but lots of cleaning after in ZBrush .
If you get tracking issues with Mini this will be the only option .
