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Heritage Science
Fig. 3 | Heritage Science

Fig. 3

From: The origins of the Selden map of China: scientific analysis of the painting materials and techniques using a holistic approach

Fig. 3

a Spectral imaging of the Selden map using PRISMS at the Bodleian Library; b, c spectral comparison between data collected from colour patches of a mini Macbeth ColorChecker. The black curves are spectra collected by a fibre optic spectrometer and the blue circles and red crosses are calibrated PRISMS data from the first and second day of imaging

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