[verditelabs]

Yes. Most of the ink we have come across is carbon based. This leaves a certain texture on the scrolls that is recoverable and viewable with fairly basic physically based rendering, though how much ink is recoverable varies greatly from one character to the next. I don't have links handy but we just published updates to our data viewer page on our website. Pherc.Paris.4 I believe has the best overlay of ink.

A lot of labeled data is available on our ftp server which has public access

[londons_explore]

I assume that's because the writer probably sometimes shortly after re-inking the writing instrument was putting down a 10x thicker layer...