Figure 1 | Scientific Reports

Figure 1

From: Browsing through sealed historical manuscripts by using 3-D computed tomography with low-brilliance X-ray sources

Figure 1

(a) The book consisting of 56 handmade paper pages covered in buffalo leather. (b) Schematic of the book placement within the scanner with the cover orthogonal to the rotation axis z. While the turntable rotates, a set of projection images are acquired, from which a 3-D volume is calculated. (c) X-ray attenuation plot for the different inks and paper–malachite ink has the highest attenuation, followed by iron gall and Tyrian purple. As buckthorn ink and paper are both made of cellulose their absorption is the same.

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