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Table 2 Imaging modalities included in the study

From: Creation and reference characterization of Edo period Japanese woodblock printing ink colorant samples using multimodal imaging and reflectance spectroscopy

ModeFilter(s)Transmittance (approximate) (nm)Radiation/light source
Visible-reflectedPECA 916400–750North light high-intensity discharge (HID) copy light (2)
PECA 918380–700
Infrared-reflectedPECA 910850–1000North light high-intensity discharge (HID) copy light (2)
Visible-induced infrared luminescencePECA 904795–1000PowerSmith LED work light with 2 BG38 filters attached
UVA-induced luminescencePECA 916400–750UV systems triple bright II LW370 (2)
PECA 918380-700
UVA-reflectedPECA 900250–400UV systems triple bright II LW370 (2)
X-Nite BP1300–650
 Photographs usedChannel substitutions
IR-reflected false colorVisible + infrared-reflectedG to B; R to G; RIR to R
UVA-reflected false colorVisible + UVA-reflectedG to R; B to G; RUVA to B