Journal of Spectroscopy / 2018 / Article / Fig 7

Research Article

Characterization and Digital Restauration of XIV-XV Centuries Written Parchments by Means of Nondestructive Techniques: Three Case Studies

Figure 7

Photography (a) and UV fluorescence images taken at 420 nm (b), 680 nm (c), and 800 nm (d) of details of Parch. 34. (e, f) Image processing results by PCA: score image of PC1 (variance 98.68%) and score image of PC3 (variance 0.32%).
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