Fig. 4From: A technical step forward in the integration of visible-induced luminescence imaging methods for the study of ancient polychromySchematic representation of the experimental set-up for the collection of a visible-induced visible luminescence (VIVL) and b visible-induced infrared luminescence (VIL) images. The plots below each set-up show the LED excitation source output and the transmittance curves of filters used in front of the camera in each caseBack to article page