Fig. 5From: Using computed tomography to recover hidden medieval fragments beneath early modern leather bindings, first resultsIn this detailed view, one slice of the volumetric 3D CT image acquired of one volume is shown, in which the spine’s three layer surfaces have been segmented by LOGISMOS. The spine is formed of the gatherings of folded paper sheets of the book’s textblock (blue); parchment spine patches placed on the spine (green); and tawed pigskin cover (red)Back to article page