Fig. 5: RIS-VNIR results. | npj Heritage Science

Fig. 5: RIS-VNIR results.

From: Illuminating Rembrandt’s Chiaroscuro in The Night Watch: the painting process of Van Ruytenburch’s costume

Fig. 5

a Detailed squares of the 5 µm resolution photograph which were selected to generate the first derivative reflectance spectral endmembers used to obtain SAM-maps. b Composite overlay of the colored SAM-maps showing c lead white (white-gray) and lead-tin yellow (yellow), d an arsenic-based orange pigment (orange), e goethite (light-brown) and hematite (red brown), f vermilion (red), g an animal-based red lake (pink), h azurite (cyan) and smalt (dark blue).

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