bi3mw > 03-08-2026, 05:16 PM
Koen G > 03-08-2026, 05:37 PM

JoJo_Jost > 03-08-2026, 06:24 PM
JoeyB > 04-08-2026, 03:39 AM
ololololo > 04-08-2026, 08:00 AM
nablator > 04-08-2026, 10:06 AM
Jorge_Stolfi > 04-08-2026, 10:31 AM
(04-08-2026, 03:39 AM)JoeyB Wrote: You are not allowed to view links. Register or Login to view.I was reading Nick Pelling's blog (You are not allowed to view links. Register or Login to view.) and came across his 2022 suggestion of raking IR on f116v, and I wondered whether the AI could get anywhere with the 2014 multispectral set (Dr. Davis wrote up here: You are not allowed to view links. Register or Login to view., and which is freely downloadable) to see if pen furrows would come out.
So the method (get the AI to take multiple images of the same surface and subtract stuff to produce the topographic image, like a shading gradient) works... it doesnt simulate raking (which I thought it might, anyway I thought this was interesting to see how far AI stuff has come with image processing) but there's just no furrow there to find at this lighting.
Quote:Shallower rake on You are not allowed to view links. Register or Login to view. could show if there were any furrows at all.
Quote:which Nick indicated in his blog could help figure out if the marginalia is one hand or two or three from different periods and if a later hand bit differently into the surface as it stiffened over time
oshfdk > 04-08-2026, 12:24 PM
(04-08-2026, 10:31 AM)Jorge_Stolfi Wrote: You are not allowed to view links. Register or Login to view.A pity, because such images would definitely prove or refute the various "retracing" and "magic ink" theories, including the "Big Wipe-off" theory for f116v, and reveal practically everything one could ever know about the original traces.
Jorge_Stolfi > 04-08-2026, 01:13 PM
(04-08-2026, 12:24 PM)oshfdk Wrote: You are not allowed to view links. Register or Login to view.(04-08-2026, 10:31 AM)Jorge_Stolfi Wrote: You are not allowed to view links. Register or Login to view.A pity, because such images would definitely prove or refute the various "retracing" and "magic ink" theories, including the "Big Wipe-off" theory for f116v, and reveal practically everything one could ever know about the original traces.
Would they? I remember arguing about this very macro image, I was saying there were clearly no signs of retracing here
Quote:and the way dark ink perfectly transitioned to the faint stroke in the flourish of r made it impossible to be an instance of later retracing
oshfdk > 04-08-2026, 06:20 PM
(04-08-2026, 01:13 PM)Jorge_Stolfi Wrote: You are not allowed to view links. Register or Login to view.The dark ink in that r is clearly a single stroke from top to bottom. Your explanation would have the Scribe tying to draw the plume as a second stroke after that, but the magic quill and magic ink suddenly switched to "faint" after 0.1 mm, and then hiccuped between "faint" and "medium" for the rest of the plume. And the Scribe was OK with that...