British Library Mappaemundi

More digital mappaemundi are due soon, from the British Library website. I haven't posted about digital maps since 2010 but have been doing some work on map vectorizing in the background.

Here is a plot of the Dura-Europos map - a completely vectorized trace - which is an example of what could be done to make a whole range of first-millennium maps readable to modern human eyes (and machine-readable too):
The idea is to trace the actual lines on the map and digitize these with drawing software, as I have done for various diagrams, such as Lambert's stemma on Piggin.net.

As far as I can see, Virtual Mappaemundi (VM) will only digitize the script of the maps, but will not vectorize the lines. Maybe this is an opportunity to extend the process by crowd-sourcing?

The March 14 post on the BL blog by Cat Crossley about the digitizations of the nine mappaemundi doesn't tell us a whole lot about the technology, but Cat has just tweeted back:
I could only track down low-res pics before getting the blog out, rest assured all VM project images are hi-res + magnificent!

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