Table 2 Imaging modalities included in the study
Mode | Filter(s) | Transmittance (approximate) (nm) | Radiation/light source |
|---|---|---|---|
Visible-reflected | PECA 916 | 400–750 | North light high-intensity discharge (HID) copy light (2) |
PECA 918 | 380–700 | ||
Infrared-reflected | PECA 910 | 850–1000 | North light high-intensity discharge (HID) copy light (2) |
Visible-induced infrared luminescence | PECA 904 | 795–1000 | PowerSmith LED work light with 2 BG38 filters attached |
UVA-induced luminescence | PECA 916 | 400–750 | UV systems triple bright II LW370 (2) |
PECA 918 | 380-700 | ||
UVA-reflected | PECA 900 | 250–400 | UV systems triple bright II LW370 (2) |
X-Nite BP1 | 300–650 |
Photographs used | Channel substitutions | |
|---|---|---|
IR-reflected false color | Visible + infrared-reflected | G to B; R to G; RIR to R |
UVA-reflected false color | Visible + UVA-reflected | G to R; B to G; RUVA to B |